Re: [Qgis-user] QGIS2threejs not working

[Carlos Cerdán]

Hi there

Same issue here. QGIS 3.4.13 under Windows 7, PC in a corporate LAN, (not
administrator permissions)

QGIS 3.10.1 under Ubuntu is fine.

Carlos Cerdán

El dom., 22 dic. 2019 a las 6:11, Paolo Cavallini ()
escribió:

> Please use either 3.4 or 3.10 with a clean profile and report back.
> Cheers.
>
> On 22 December 2019 12:28:26 EET, Velizar Strumberger <
> velizar.strumber...@gmail.com> wrote:
>>
>> Hi
>> I need some assistance. I finally decided to switch to GQIS 3.5. from
>> QGSA 2.14 (historic decision for me).. Unfortunately the QGIS2threejs does
>> not work. I have a DEM that works in QGIS 2.14 and 3D view but not here.
>> When I upload the DEM the only thing I get is the blue sky canvas and a
>> message:
>>
>> *No 3D objects were rendered? There is a compatibility issue with QGIS 3D
>> view. You need to close QGIS 3D view(s) and restart QGIS to use this
>> preview. *
>>
>> No! I did not start 3D view. The option Decorations dorks. The only thing
>> that happens is "Building  DEM .End.
>>
>> Thank you
>>
>
> --
> Please excuse my brevity.
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[Qgis-user] GRASS doesn't import layer from various CRS gpkg

[Carlos Cerdán]

Hi group:

Here whit QGIS: 3.4.2 - Ubuntu 18.04.

I can't import a polygon from a gpkg file to GRASS as QGIS plugin. Message
is: "Detected different projections of input layers. Input layers must be
imported separately". Gpkg file has one GEO and two UTM layers, and I was
trying to import one UTM layer. Perhaps GRASS have read the wrong place, so
It refuse to import a layer from a geopackage with different CRS layers.

Developers please take note about it.

Cheers

Carlos
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Re: [Qgis-user] Display Point with Show Labels

[Carlos Cerdán]

What about to use scale interval? You're using view based on rules; then,
you can define scale intervals to show desired points (and their labels)
depending of scale.

Good luck,

Carlos

El mié., 7 nov. 2018 a las 17:13, Ian Reese ()
escribió:

> Hi QGIS,
>
>
>
> I have been researching for two days now and not sure if this achievable,
> but is it possible to only show points for the corresponding labels that
> are showing?  I have a rule based labeling structure for a layer.  I want
> to only show points for those labels showing.  I found this post from two
> years ago:
> https://gis.stackexchange.com/questions/217067/showing-only-point-markers-when-labels-are-shown-in-qgis
> suggesting it was not possible.  I was hoping this was may have been
> addressed in QGIS 3.0 or perhaps this is some programmatic solution I am
> missing.  Attached is screen shot of the issue.  Too many points for the
> labels.
>
>
>
> Cheers,
>
>
>
> Ian C Reese
> Senior Spatial Analyst
> Location Information Data Services
>
>
>
> E  ire...@linz.govt.nz | DDI 04 6504
>
>
>
> Wellington Office, Level 7, Radio New Zealand House, 155 The Terrace
> PO Box 5501, Wellington 6145, New Zealand | T 04 460 0110
> W  www.linz.govt.nz | www.landonline.govt.nz | data.linz.govt.nz
> 
>
>
>
> --
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Re: [Qgis-user] Iterating two layers in Report - QGIS 3.2

[Carlos Cerdán]

Thank you very much Frank.

Yes, it's an excellent post, I've read it to learn new Report features.

My issue are labels: I would like to hide them if they are out of the
feature that is being iterated, especially when there are various labeled
layers... Well i've used plan B: satellite imagenery from quickmapservice
as base, which is masked by iterated polygon which has no fill;  and white
labels that are hidden by white fill of polygons that are not iterated.

Regards

Carlos

2018-07-04 1:28 GMT-05:00 Frank Broniewski :

> Hi Carlos,
>
>
>
> did you find Nyalls excellent post on Reports in QGIS 3 already? I believe
> it explains what you want do achieve. Have a look at [1]
>
>
>
> [1] https://north-road.com/2018/01/23/exploring-reports-in-
> qgis-3-0-the-ultimate-guide/
>
>
>
> Hth,
>
> Frank
>
>
>
> Dipl. Geogr. Frank Broniewski
>
> Waldhölzbacher Str. 51
> <https://maps.google.com/?q=Waldh%C3%B6lzbacher+Str.+51+66679+Losheim+am+See&entry=gmail&source=g>
>
> 66679 Losheim am See
> <https://maps.google.com/?q=Waldh%C3%B6lzbacher+Str.+51+66679+Losheim+am+See&entry=gmail&source=g>
>
> 06872 509 068 4
>
> 0176 611 26 9 2 6
>
> www.frankbroniewski.com
>
>
>
>
>
>
>
> *Von:* Qgis-user  *Im Auftrag von *Carlos
> Cerdán
> *Gesendet:* Dienstag, 3. Juli 2018 16:49
> *An:* qgis-user@lists.osgeo.org
> *Betreff:* [Qgis-user] Iterating two layers in Report - QGIS 3.2
>
>
>
> Hi list
>
> I would like to make a report (atlas) iterating two layers where:
>
> 1. Layer of level 2 administrative boundary is iterated (with atlas
> feature) and shows it as a no filled polygon, with out label;  and else
> polygons as white filled with labels;  and
>
> 2. Layer of administrative level 3 boundary is iterated too (with atlas
> feature), and shows labels only in polygons that are intersected or are
> within the active level 2 boundary.
>
> How can be this done in QGIS 3.2? I was succsefull in QGIS 2.18, but now
> it doesn't work. I've tryed rules as:
>
>  intersects(@atlas_geometry,$geometry )
>
> contains(geometry(@atlas_feature),centroid( $geometry ) ) is true
>
> but nothing.
>
>
>
> I'm tring this because of non desired labels of level 3 boundary. One
> solutiion is using white labels that are fused with white polygons of level
> 2 boundary... but it is plan B.
>
>
>
> Any advice please?
>
>
>
> Cheers!
>
>
>
> Carlos Cerdan
>
>
>
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[Qgis-user] Iterating two layers in Report - QGIS 3.2

[Carlos Cerdán]

Hi list

I would like to make a report (atlas) iterating two layers where:

1. Layer of level 2 administrative boundary is iterated (with atlas
feature) and shows it as a no filled polygon, with out label;  and else
polygons as white filled with labels;  and

2. Layer of administrative level 3 boundary is iterated too (with atlas
feature), and shows labels only in polygons that are intersected or are
within the active level 2 boundary.

How can be this done in QGIS 3.2? I was succsefull in QGIS 2.18, but now it
doesn't work. I've tryed rules as:

 intersects(@atlas_geometry,$geometry )

contains(geometry(@atlas_feature),centroid( $geometry ) ) is true

but nothing.

I'm tring this because of non desired labels of level 3 boundary. One
solutiion is using white labels that are fused with white polygons of level
2 boundary... but it is plan B.

Any advice please?

Cheers!

Carlos Cerdan
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Re: [Qgis-user] QuickMapService plugin for 3.2

[Carlos Cerdán]

Fixed!

2018-06-24 20:03 GMT-05:00 Phil Wyatt :

> It has been reported to the developers
>
>
>
> https://github.com/nextgis/quickmapservices/issues/166
>
>
>
> Cheers - Phil
>
>
>
> *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
> Of *Micha Silver
> *Sent:* Monday, 25 June 2018 12:47 AM
> *To:* Qgis-user@lists.osgeo.org
> *Subject:* [Qgis-user] QuickMapService plugin for 3.2
>
>
>
> I see that the recent update to version 3.2 causes a conflict with the
> very popular (and important) "QuickMapServices" plugin. Is there any plan
> to update the plugin for the new version?
>
> Thanks,
>
>
> --
>
> Micha Silver
>
> Ben Gurion Univ.
>
> Sde Boker, Remote Sensing Lab
>
> cell: +972-523-665918
>
>
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[Qgis-user] Labels and qml in 3.0

[Carlos Cerdán]

Hi list:

It's great to can control labels better in QGIS 3. I've was trying it in
Windows 10, but have one issue:

I can move, rotate, etc, labels of a new pre-styled (it has a related qml
file) or not pre-styled polygon layer; but if I save the style as
predefined, labels go static and label controls don't work.

I've erased the related qml, and label control returns, reloading the layer.

Is it some bug or I'm doing something wrong?

How can I save label settings as predefined after change location and/or
rotation with this new control?

Thank you in advance

Carlos Cerdan
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Re: [Qgis-user] saga disappears from QGIS 2.18.14 on mac os Sierra

[Carlos Cerdán]

Hi Timothée:

Even you're on Mac, perhaps it's related with issue (and *temporal*
solution) described here:

https://gis.stackexchange.com/questions/224617/problem-getting-saga-activated-in-ubuntu-qgis-2-18-2

You can try workaround described there: Look for SagaAlgorithmProvider.py
file and change line 76 (or equivalent)

Good luck

Carlos




2017-12-28 4:18 GMT-05:00 Timothée Colas :

> Hello !
> It's my first time in qgis user mailing list, I hope I'm doing it right.
>
> So I have an issue on QGIS 2.18.14 on mac os Sierra. I post for it on
> gis.stackexchange and I search everywhere without good results.
>
> I upgraded QGIS from 2.18.0 to 2.18.14 but I losted Saga in processing
> tools.
>
> First I tried to disable/reactivate it in processing > options > providers
> but nothing.
>
> I searched some solution on web and I saw that I can't change Saga folder
> in providers.
>
> [image: enter image description here]
> 
>
> So I find a way to change it in QGIS advanced options > processing >
> configuration menu. I tried some folders but nothing worked...
>
> [image: enter image description here]
> 
>
> In others gis.stackexchange posts people said to use Osgeo4W Saga
> installation but i'm on mac OS not on Windows...
> After that, I installed Saga GIS with homebrew and i tried some path for
> saga but nothing works.
> /usr/local/Cellar/saga-gis-lts/2.3.2, /usr/local/Cellar/
> saga-gis-lts/2.3.2/lib, /usr/local/Cellar/saga-gis-lts/2.3.2/bin
>
> Can you help me to bring Saga back ?
>
> Thank you in advance
>
> Timothée
> --
> Timothée Colas
> Géomaticien
> Fruition Sciences
> 09 53 22 13 00
>
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[Qgis-user] QGIS 2.18 y 2.99: Don't ask for save changes

[Carlos Cerdán]

Hi list. Some developer here?

I opened a project just for change the name of a print composer: i've
opened the Composer Manager, changed the name of the unique composer,
closed it, and closed QGIS, waiting for  "Do yo want to save the current
project?". It didn't appeared, and, of course, changes were not saved.

Tested in Ubuntu 16.04 (QGIS 2.18)  and Windows 10 (QGIS 2.99). It's not
waited behavior, is it?.

Best whishes for 2018

Carlos
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Re: [Qgis-user] Field comments

[Carlos Cerdán]

Thank you very much to everybody. So, I was trying to use "comments" in the
wrong way. And yes, ALIAS works fine. Of course, don't forget to save the
layer style.

Regards

Carlos Cerdan

2017-11-23 4:02 GMT-05:00 Stefan Blumentrath :

> Hi Carlos,
>
> See: https://github.com/qgis/QGIS-Enhancement-Proposals/issues/91
> for the metadata overhaul, in case that is of interest...
>
> Cheers
> Stefan
>
> -Original Message-
> From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of
> Matthias Kuhn
> Sent: torsdag 23. november 2017 08.58
> To: qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Field comments
>
> Hi Carlos,
>
> Comments are not saved in the project, they are just retrieved from
> databases.
>
> E.g. Postgres:
>
> COMMENT ON COLUMN my_table.my_column IS 'Employee ID number';
>
> It's a usability issue with QGIS 2.18 that the column is editable in the
> layer properties, it should be read only.
>
> Sidenote: That's not something that couldn't be changed in a future
> version, maybe it could be also discussed with the metadata team if there's
> something ready for this already.
>
> Regards
> Matthias
>
> On 11/22/2017 11:14 PM, Carlos Cerdán wrote:
> > Hi list:
> >
> > Does anyone know how to make comments permanent in the fields of the
> > attribute table? (see image on
> > https://www.dropbox.com/s/uef2gs0g3qmp1g0/Fields.png?dl=0 )
> >
> > When I open the properties of the layer and go to the "fields" tab, I
> > can't make the comments recorded. I tried to put the layer in edit
> > mode and enter comments with quotes, but nothing.
> >
> > Maybe I'm using this feature the wrong way. Any suggestions?
> >
> > Carlos Cerdan
> >
> >
> > ___
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Re: [Qgis-user] Field comments

[Carlos Cerdán]

Sorry. More information: I've tried it in QGIS 2.18.x under Ubuntu and
Windows. I've also tried QGIS 2.99 in Windows 10. Nothing.

2017-11-22 17:14 GMT-05:00 Carlos Cerdán :

> Hi list:
>
> Does anyone know how to make comments permanent in the fields of the
> attribute table? (see image on https://www.dropbox.com/s/
> uef2gs0g3qmp1g0/Fields.png?dl=0 )
>
> When I open the properties of the layer and go to the "fields" tab, I
> can't make the comments recorded. I tried to put the layer in edit mode and
> enter comments with quotes, but nothing.
>
> Maybe I'm using this feature the wrong way. Any suggestions?
>
> Carlos Cerdan
>
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[Qgis-user] Field comments

[Carlos Cerdán]

Hi list:

Does anyone know how to make comments permanent in the fields of the
attribute table? (see image on
https://www.dropbox.com/s/uef2gs0g3qmp1g0/Fields.png?dl=0 )

When I open the properties of the layer and go to the "fields" tab, I can't
make the comments recorded. I tried to put the layer in edit mode and enter
comments with quotes, but nothing.

Maybe I'm using this feature the wrong way. Any suggestions?

Carlos Cerdan
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Re: [Qgis-user] problemas con disolve

[Carlos Cerdán]

Hola Manuel

Me ha pasado algo similar en ocasiones. Es problema de topología. Algunos
polígonos originales con coinciden bien, por lo tanto antes chequea tu capa
con las herramientas correspondientes; sin embargo esto no necesariamente
solucionará tu problema si es que persisten esas faltas de coincidencia. De
ser este tu caso, pon la capa resultante en modo edición y borra los nodos
defectuosos.

Saludos

Carlos

El 17 de octubre de 2017, 2:00, Manuel Esteban Lucas Borja <
manuelestebanlucasbo...@gmail.com> escribió:

> Hola Buenos días,
> He realizado un disolve de varios polígonos con un campo en común y al
> acabar la operación en el interior del polígono resultante aparecen una
> líneas que forman parte del polígono y que afean el resultado del disolve.
> ¿Existe alguna manera de eliminar estas líneas interiores y depurar el
> polígono?
> Gracias
> Manuel
>
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Re: [Qgis-user] Menu Capas, opción añadir a la vista general, añadir todo a la vista general, eliminar todo de la vista general

[Carlos Cerdán]

Hola Manuel

La vista general te da una guía gráfica de qué zona estás visualizando en
tu proyecto. Luego de cargar alguna capa, activa la vista general (Ver -->
Paneles --> Panel de vista general), añade la capa a la vista general y
podrás ver la utilidad de esto acercando o alejando el zoom y/o
desplazándote en el área de trabajo.

Saludos

Carlos

El 19 de septiembre de 2017, 15:12, Manuel Esteban Lucas Borja <
manuelestebanlucasbo...@gmail.com> escribió:

> Estimados Usuarios,
>
> En el menu de capas, dentro de Qgis, ¿Cual es la utilidad de las
> herramientas añadir a la vista general, añadir todo a la vista general,
> eliminar todo de la vista general? vienen en la versión 2.18 con un símbolo
> de más en color verde y rojo y unas gafas.
> Un saludo y gracias por la ayuda,
>
> Manuel
>
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Re: [Qgis-user] Can we make QGIS stop lying?

[Carlos Cerdán]

Hi Tobias:

I understand your frustation (I've lived it), but QGIS doesn't lie, it is
different from the way that some topics are done in another GIS.

You can get right metric values even if your layer and project are in
Lat-long units. In your particular case, if your project and layer CRS is
EPSG 4326, please try with this expression in field calculator:

length(transform($geometry, 'EPSG:4326', 'EPSG:25832') )

If your project CRS is 25832 (on the the fly CRS enabled) but your layer is
still EPSG 4326 or 25832, you can use:

 length($geometry)

If your project CRS is 25832 (on th fly CRS disabled) and your layer is
EPSG 25832, you can use:

$length


Yes, it's something complicated, but it's the price for more liberty. With
areas it's similar. Perhaps it's better don't use "$length" or "$area". I
recomend "length" and "area" fuctions.

For difference beteween "$_function" and "function" see help for fuctions
in field calculator

Best whishes from Perú.

Carlos Cerdán







2017-05-25 5:47 GMT-05:00 Tobias Wendorff :

> Hi there!
>
> Yesterday, I gave an introductory workshop at University on
> how to download OSM-data off its website and work on it in QGIS.
> The students are in master's degree now and learned ArcGIS in
> their study runs only. So we have to make QGIS tasty to them.
>
> I've explained the students, how to switch to a metric projection
> (EPSG:25832) instead of the geographical one (EPSG:4326). Then
> we've filtered out shops
>
> Then the students should filter out all the shops in their hometown
> and calculate the airlining distance to their flat. I've used hub
> lines for this. The dialog informs about distance in meters.
>
> It's a lie. The resulting distance is in decimal degrees. So 600
> meters ere about 0.1 [whatever]. Of course, it's easy to calculate
> the real distance using "$length" in field calculator, but why?!
>
> QGIS functions should detect that coordinates are in geographic
> projections and should inform that the result isn't metric OR
> switch to a processing system, which gives metric results. There
> are many libraries, which can calculate VERY accurate and quick
> on ellipsoids. With less than 0.01 mm of errors.
>
> Most of us might be aware that's normal behavior in QGIS, but
> most of new users will not be aware that meters in GUI aren't
> meters and dataset.
>
> Best regards,
> Tobias
>
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Re: [Qgis-user] An issue with DEM terrain models

[Carlos Cerdán]

Hi Giacomo

Perhaps the SRC of your DEM is ESPG4326 (lat-long) if so, vertical units
are meters and horizontal units are degrees, then the relation between
vertical and horizontal units is 11, and you must put that value in the
"scale" option. It is because 90° = 10'000,000 m (one cuarter of meridian).

Saludos

Carlos



2017-03-09 11:13 GMT-05:00 Giacomo Fontanelli :

> Hi everybody
>
> I'm using a SRTM 4 (Geotiff, Int16 - Sixteen bit signed integer) and QGIS
> 2.18.1.
>
> I tried to produce a slope map using Raster > analysis > DEM (terrain
> model).
>
> In case I would like to have degrees as output i obtain a map with values
> from 89.5 to 90 degrees only, so almost impossible to classify.
>
> In case I flag the option"Slope expressed as percent" I obtain a map with
> more pixel values, but the slope is expressd with numbers from 0 to1971690.
>
> What's the problem?
>
> Thank you
>
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Re: [Qgis-user] Field Calculator behavior

[Carlos Cerdán]

+1

Yes! it would be pretty handy

2017-03-01 5:52 GMT-05:00 Andreas Wicht :

> Hi,
>
> the current default behavior of the field calculator is that once it
> finishes a calculation it closes.
> Is there a possibility to prevent this from happening and keep it open?
> That is particularly useful when several columns need to be updated.
>
> If there is no such option currently available, would it be feasible
> to introduce a checkbox "keep open" to the field calculator?
>
> Cheers
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Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

And light was done!

Objective: to get planimetric-UTM-my-zone areas, in square Km, from a
LatLong layer, just at one step: in Fields calculator

area( transform( $geometry,'EPSG:4326', 'EPSG:32717' ))/100

Sorry, I was wrong for years, reprojecting layers; deactivating OTF SRC;
and using $area function: It happens when you don't read help in front of
you and don't try "new" functions.

Carlos


2016-10-19 15:11 GMT-05:00 Carlos Cerdán :

>
> > Under project properties, general tab - change "ellipsoid" to "None
> /Planimetric".
>
> Done, but calculated area is still... geodetic area?. I've tried ArcGIS
> and, for my GEO layer, It gives me desired area (same as an UTM layer,
> calculated with OTF off); so, it's me or QGIS, but I can't do this task in
> one step on QGIS: first I've to reproject mi GEO layer into an UTM one;
> disable OTF and finally calculate area (planar, as UTM is) in the new UTM
> layer.
>
>
> Carlos🤔
>
>
>
>
> 2016-10-18 19:58 GMT-05:00 Nyall Dawson :
>
>> On 19 October 2016 at 02:22, Carlos Cerdán  wrote:
>> > It was my fault. I was used to consider plane areas as "correct",
>> forgetting
>> > ellipsoidal areas. So, QGIS give us freedom to calculate planar or
>> > ellipsoidal (geodetical) areas, but we must be careful about settings;
>> Is
>> > not it?. Sometimes, too much freedom is annoying!
>> >
>> > But, How can I calculate UTM (planar) area from a GEO layer in one step?
>>
>> Under project properties, general tab - change "ellipsoid" to "None /
>> Planimetric".
>>
>> I keep meaning to split up the concept of ellipsoidal measurement from
>> OTF reprojection. In my view these are two different concepts - one is
>> just about display of data, the other relates to measurement. Ie, you
>> should be able to perform ellipsoidal calculations even if OTF
>> rendering is disabled.
>>
>> I just keep forgetting to do it early in a release cycle for extensive
>> testing...
>>
>> Nyall
>>
>>
>>
>
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Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

> Under project properties, general tab - change "ellipsoid" to "None
/Planimetric".

Done, but calculated area is still... geodetic area?. I've tried ArcGIS
and, for my GEO layer, It gives me desired area (same as an UTM layer,
calculated with OTF off); so, it's me or QGIS, but I can't do this task in
one step on QGIS: first I've to reproject mi GEO layer into an UTM one;
disable OTF and finally calculate area (planar, as UTM is) in the new UTM
layer.


Carlos🤔




2016-10-18 19:58 GMT-05:00 Nyall Dawson :

> On 19 October 2016 at 02:22, Carlos Cerdán  wrote:
> > It was my fault. I was used to consider plane areas as "correct",
> forgetting
> > ellipsoidal areas. So, QGIS give us freedom to calculate planar or
> > ellipsoidal (geodetical) areas, but we must be careful about settings; Is
> > not it?. Sometimes, too much freedom is annoying!
> >
> > But, How can I calculate UTM (planar) area from a GEO layer in one step?
>
> Under project properties, general tab - change "ellipsoid" to "None /
> Planimetric".
>
> I keep meaning to split up the concept of ellipsoidal measurement from
> OTF reprojection. In my view these are two different concepts - one is
> just about display of data, the other relates to measurement. Ie, you
> should be able to perform ellipsoidal calculations even if OTF
> rendering is disabled.
>
> I just keep forgetting to do it early in a release cycle for extensive
> testing...
>
> Nyall
>
>
>
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Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

It was my fault. I was used to consider plane areas as "correct",
forgetting ellipsoidal areas. So, QGIS give us freedom to calculate planar
or ellipsoidal (geodetical) areas, but we must be careful about settings;
Is not it?. Sometimes, too much freedom is annoying!

But, How can I calculate UTM (planar) area from a GEO layer in one step?

Thank you very much for your time and so sorry if I'm doing basic questions.

Carlos



2016-10-16 17:59 GMT-05:00 Nyall Dawson :

> On 16 October 2016 at 05:20, Carlos Cerdán  wrote:
> > Hi Nyall (and list)
> >
> > A small projecto with UTM and GEO layers can be downloaded from dropbox:
> >
> > https://www.dropbox.com/s/c4cfb48r5326vrk/Cajamarca.zip?dl=0
> >
> > Attribute table has the correct area in AreaKm2 field (and in these
> > unities). "AreaOTFoff" is the area given by field calculator when "On The
> > Fly transformation" is deactivated. "AreaOTF_on" is the area with it
> > activated.
> >
> > So: when I have a GEO layer, I can't calculate correct area directly in
> that
> > layer: I've to reproject to UTM and deactivate automatic transformation
> of
> > SRCs, to use field calculator expecting correct values.
> >
> > OS : Ubuntu 16.04
> > QGIS : 2.16.3
> > SRC settings: by default (ellipsoide WGS84 for measures)
>
> Thanks for sending this through, but again - I can't find any issue here.
>
> The different area calculations come from the difference between
> measuring the area using a flat plane (OTF off, no ellipsoid set) vs
> measuring the area using an ellipsoid (OTF on, ellipsoid set under the
> project "general" settings). When OTF is on QGIS calculates the same
> area regardless of whether the geographic or projected source layer is
> used.
>
> Hope that clarifies!
>
> Nyall
>
>
>
> >
> > Thank you for your interest
> >
> > Carlos Cerdán
> >
> >
> > 2016-10-14 15:14 GMT-05:00 Nyall Dawson :
> >>
> >> On 15 Oct 2016 12:51 AM, "Carlos Cerdán"  wrote:
> >> >
> >> > Hi Nyall
> >> >
> >> > I'm afraid that 2.16 has still this issue. I've loaded an UTM-17 south
> >> > layer (my zone) and a Lat-long layer and:
> >> >
> >> > 1. SRC was seted in UTM
> >> >
> >> > 2. In UTM layer, if OTF SRC transformation is active, I get different
> >> > area than if it's deactivated. Correct value is the last one.
> >> >
> >> > 3. In Lat-long layer, if OTF SRC transformation is active, calculated
> >> > area is same as the wrong value of first layer. I can't get the
> correct
> >> > value in this layer, so I have to reproject into a new one and do
> step 2
> >> > (with OTF deactivated).
> >> >
> >> > What about a general option to set the prefered SRC to calculate areas
> >> > and lengths with OTF active?
> >>
> >> Hi Carlos,
> >>
> >> Can you please share your file? Cut it down to just a few polygons and
> let
> >> me know what area you expect to see. Email direct to myself.
> >>
> >> Thanks!
> >>
> >> Nyall
> >>
> >>
> >> >
> >> > Regards from Peru
> >> >
> >> > Carlos
> >> >
> >> >
> >> >
> >> > 2016-10-12 18:06 GMT-05:00 Nyall Dawson :
> >> >>
> >> >> On 12 Oct 2016 11:56 PM, "Carlos Cerdán" 
> wrote:
> >> >> >
> >> >> > AFAIK, It also is needed to turn off "on the fly SRC
> transformation"
> >> >> > to get correct area values Or QGIS has fixed this point?
> >> >>
> >> >> Everything should be fixed in recent versions, and I very (VERY) much
> >> >> want to know if any issues are still encountered.
> >> >>
> >> >> Calculating area/length is a core task for a GIS and we need to make
> >> >> sure it's rock solid. (Which it should be since 2.16!)
> >> >>
> >> >> Nyall
> >> >>
> >> >>
> >> >> >
> >> >> > If you can't get correct area values, check out about it
> >> >> >
> >> >> >
> >> >> > 2016-10-12 7:40 GMT-05:00 DelazJ :
> >> >> >>
> >> >> >> Hi,
> >> >> >> To complete Nicolas answer, you should check what are the
> >&g

Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

Hi Nyall (and list)

A small projecto with UTM and GEO layers can be downloaded from dropbox:

https://www.dropbox.com/s/c4cfb48r5326vrk/Cajamarca.zip?dl=0

Attribute table has the correct area in AreaKm2 field (and in these
unities). "AreaOTFoff" is the area given by field calculator when "On The
Fly transformation" is deactivated. "AreaOTF_on" is the area with it
activated.

So: when I have a GEO layer, I can't calculate correct area directly in
that layer: I've to reproject to UTM and deactivate automatic
transformation of SRCs, to use field calculator expecting correct values.

OS : Ubuntu 16.04
QGIS : 2.16.3
SRC settings: by default (ellipsoide WGS84 for measures)

Thank you for your interest

Carlos Cerdán


2016-10-14 15:14 GMT-05:00 Nyall Dawson :

> On 15 Oct 2016 12:51 AM, "Carlos Cerdán"  wrote:
> >
> > Hi Nyall
> >
> > I'm afraid that 2.16 has still this issue. I've loaded an UTM-17 south
> layer (my zone) and a Lat-long layer and:
> >
> > 1. SRC was seted in UTM
> >
> > 2. In UTM layer, if OTF SRC transformation is active, I get different
> area than if it's deactivated. Correct value is the last one.
> >
> > 3. In Lat-long layer, if OTF SRC transformation is active, calculated
> area is same as the wrong value of first layer. I can't get the correct
> value in this layer, so I have to reproject into a new one and do step 2
> (with OTF deactivated).
> >
> > What about a general option to set the prefered SRC to calculate areas
> and lengths with OTF active?
>
> Hi Carlos,
>
> Can you please share your file? Cut it down to just a few polygons and let
> me know what area you expect to see. Email direct to myself.
>
> Thanks!
>
> Nyall
>
> >
> > Regards from Peru
> >
> > Carlos
> >
> >
> >
> > 2016-10-12 18:06 GMT-05:00 Nyall Dawson :
> >>
> >> On 12 Oct 2016 11:56 PM, "Carlos Cerdán"  wrote:
> >> >
> >> > AFAIK, It also is needed to turn off "on the fly SRC transformation"
> to get correct area values Or QGIS has fixed this point?
> >>
> >> Everything should be fixed in recent versions, and I very (VERY) much
> want to know if any issues are still encountered.
> >>
> >> Calculating area/length is a core task for a GIS and we need to make
> sure it's rock solid. (Which it should be since 2.16!)
> >>
> >> Nyall
> >>
> >>
> >> >
> >> > If you can't get correct area values, check out about it
> >> >
> >> >
> >> > 2016-10-12 7:40 GMT-05:00 DelazJ :
> >> >>
> >> >> Hi,
> >> >> To complete Nicolas answer, you should check what are the
> measurements options set in Project --> Project Properties --> General tab.
> >> >> See also http://docs.qgis.org/2.14/en/docs/user_manual/introduction/
> general_tools.html#measuring
> >> >>
> >> >> 2016-10-12 14:07 GMT+02:00 Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca>:
> >> >>>
> >> >>> Hi,
> >> >>> You may be calculating square degrees and not metres.  It can
> depend on the crs depending on the tools you are using.
> >> >>> Nicolas
> >> >>>
> >> >>> Le 11 oct. 2016 à 08:54, Martina Schäfer [via OSGeo.org] <[hidden
> email]> a écrit :
> >> >>>
> >> >>>> I experienced some confusion with calculation of area using the
> field calculator in QGIS version 2.16.3. Since I'm using MapInfo
> Professional as well, I mainly use tab-files that I can open in both
> programmes, but occasionally I save as shapefile since this used to be the
> default in QGIS.
> >> >>>>
> >> >>>> When comparing files, I coincidently realized that there was a
> mismatch in calculated area for the shapefile and the tab-file for exactly
> the same polygons! I used the field calculator in the attribute table in
> both cases, but for the shapefile the resulting areas were almost doubled
> in area compared to the tab-file. Any idea why this is happening?
> >> >>>>
> >> >>>> I also realized similar differences when calculating area in a
> file where projection has been converted from SWEREF99TM (a Swedish
> national projection) to WGS84. There differences occurred in both the tab
> and shapefile compared to the area calculated for the same tab-file in
> MapInfo. Again I find this very confusing!
> >> >>>>
> >> >>>> I

Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

Hi Nyall

I'm afraid that 2.16 has still this issue. I've loaded an UTM-17 south
layer (my zone) and a Lat-long layer and:

1. SRC was seted in UTM

2. In UTM layer, if OTF SRC transformation is active, I get different area
than if it's deactivated. Correct value is the last one.

3. In Lat-long layer, if OTF SRC transformation is active, calculated area
is same as the wrong value of first layer. I can't get the correct value in
this layer, so I have to reproject into a new one and do step 2 (with OTF
deactivated).

What about a general option to set the prefered SRC to calculate areas and
lengths with OTF active?

Regards from Peru

Carlos



2016-10-12 18:06 GMT-05:00 Nyall Dawson :

> On 12 Oct 2016 11:56 PM, "Carlos Cerdán"  wrote:
> >
> > AFAIK, It also is needed to turn off "on the fly SRC transformation" to
> get correct area values Or QGIS has fixed this point?
>
> Everything should be fixed in recent versions, and I very (VERY) much want
> to know if any issues are still encountered.
>
> Calculating area/length is a core task for a GIS and we need to make sure
> it's rock solid. (Which it should be since 2.16!)
>
> Nyall
>
>
> >
> > If you can't get correct area values, check out about it
> >
> >
> > 2016-10-12 7:40 GMT-05:00 DelazJ :
> >>
> >> Hi,
> >> To complete Nicolas answer, you should check what are the measurements
> options set in Project --> Project Properties --> General tab.
> >> See also http://docs.qgis.org/2.14/en/docs/user_manual/introduction/g
> eneral_tools.html#measuring
> >>
> >> 2016-10-12 14:07 GMT+02:00 Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca>:
> >>>
> >>> Hi,
> >>> You may be calculating square degrees and not metres.  It can depend
> on the crs depending on the tools you are using.
> >>> Nicolas
> >>>
> >>> Le 11 oct. 2016 à 08:54, Martina Schäfer [via OSGeo.org] <[hidden
> email]> a écrit :
> >>>
> >>>> I experienced some confusion with calculation of area using the field
> calculator in QGIS version 2.16.3. Since I'm using MapInfo Professional as
> well, I mainly use tab-files that I can open in both programmes, but
> occasionally I save as shapefile since this used to be the default in QGIS.
> >>>>
> >>>> When comparing files, I coincidently realized that there was a
> mismatch in calculated area for the shapefile and the tab-file for exactly
> the same polygons! I used the field calculator in the attribute table in
> both cases, but for the shapefile the resulting areas were almost doubled
> in area compared to the tab-file. Any idea why this is happening?
> >>>>
> >>>> I also realized similar differences when calculating area in a file
> where projection has been converted from SWEREF99TM (a Swedish national
> projection) to WGS84. There differences occurred in both the tab and
> shapefile compared to the area calculated for the same tab-file in MapInfo.
> Again I find this very confusing!
> >>>>
> >>>> I need to rely on the area-calculations thus I really hope someone
> here can explain to me what is happening!
> >>>>
> >>>> Thanks in advance,
> >>>> Martina
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> 
> >>>> If you reply to this email, your message will be added to the
> discussion below:
> >>>> http://osgeo-org.1560.x6.nabble.com/inconsistenty-when-calcu
> lating-area-depending-on-file-type-or-projection-tp5290228.html
> >>>> To start a new topic under Quantum GIS - User, email [hidden email]
> >>>> To unsubscribe from Quantum GIS - User, click here.
> >>>> NAML
> >>>
> >>>
> >>> 
> >>> View this message in context: Re: inconsistenty when calculating area
> depending on file type or projection?
> >>> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> >>>
> >>> ___
> >>> Qgis-user mailing list
> >>> Qgis-user@lists.osgeo.org
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> >>
> >>
> >>
> >> ___
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> >
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Re: [Qgis-user] Map Scale text in composer

[Carlos Cerdán]

Hi Randal:


The label expression:


[% '1 inch to ' || (to_int( $scale )/12) || ' Feet'%]


must work... but I got "1 inch to 0 Feet".  $scale help says: "This
function is only available in some contexts and will be 0 otherwise". 
Which contexts?

Developers, please light us.


Carlos Cerdán



2016-10-12 8:52 GMT-05:00 Randal Hale :

> I've had this question come up several times and I've done some digging
> but can't find an answer.
>
> In map composer I can set my scale (Feet) to 1:7920 which is 1 inch to 660
> Feet.
>
>- I can display a scale bar.
>- I can display scale text (1:7920)
>
> Can I display  "1 inch to 660 Feet"  through use of an expression? I've
> been manually typing it in and sometimes I'll change map scale and forget
> to change the typed scale.
>
> Randy
>
> --
> -
> Randal Hale
> North River Geographic Systems, Inchttp://www.northrivergeographic.com
> 423.653.3611 rjh...@northrivergeographic.com
> twitter:rjhale
>
>
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Re: [Qgis-user] inconsistenty when calculating area depending on file type or projection?

[Carlos Cerdán]

AFAIK, It also is needed to turn off "on the fly SRC transformation" to get
correct area values Or QGIS has fixed this point?

If you can't get correct area values, check out about it


2016-10-12 7:40 GMT-05:00 DelazJ :

> Hi,
> To complete Nicolas answer, you should check what are the measurements
> options set in Project --> Project Properties --> General tab.
> See also http://docs.qgis.org/2.14/en/docs/user_manual/introduction/
> general_tools.html#measuring
>
> 2016-10-12 14:07 GMT+02:00 Nicolas Cadieux :
>
>> Hi,
>> You may be calculating square degrees and not metres.  It can depend on
>> the crs depending on the tools you are using.
>> Nicolas
>>
>> Le 11 oct. 2016 à 08:54, Martina Schäfer [via OSGeo.org] <[hidden email]
>> > a écrit :
>>
>> I experienced some confusion with calculation of area using the field
>> calculator in QGIS version 2.16.3. Since I'm using MapInfo Professional as
>> well, I mainly use tab-files that I can open in both programmes, but
>> occasionally I save as shapefile since this used to be the default in QGIS.
>>
>> When comparing files, I coincidently realized that there was a mismatch
>> in calculated area for the shapefile and the tab-file for exactly the same
>> polygons! I used the field calculator in the attribute table in both cases,
>> but for the shapefile the resulting areas were almost doubled in area
>> compared to the tab-file. Any idea why this is happening?
>>
>> I also realized similar differences when calculating area in a file where
>> projection has been converted from SWEREF99TM (a Swedish national
>> projection) to WGS84. There differences occurred in both the tab and
>> shapefile compared to the area calculated for the same tab-file in MapInfo.
>> Again I find this very confusing!
>>
>> I need to rely on the area-calculations thus I really hope someone here
>> can explain to me what is happening!
>>
>> Thanks in advance,
>> Martina
>>
>>
>>
>>
>> --
>> If you reply to this email, your message will be added to the discussion
>> below:
>> http://osgeo-org.1560.x6.nabble.com/inconsistenty-when-calcu
>> lating-area-depending-on-file-type-or-projection-tp5290228.html
>> To start a new topic under Quantum GIS - User, email [hidden email]
>> 
>> To unsubscribe from Quantum GIS - User, click here.
>> NAML
>> 
>>
>>
>> --
>> View this message in context: Re: inconsistenty when calculating area
>> depending on file type or projection?
>> 
>> Sent from the Quantum GIS - User mailing list archive
>>  at
>> Nabble.com.
>>
>> ___
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>
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Re: [Qgis-user] Sampling points, keeping order

[Carlos Cerdán]

Yes, it is!

Thank you very much Nicolas, that was I was looking for, "add raster values
to points" keeps ordered the attribute table of my sampling point
collection.

Greetings from Perú.

Carlos

2016-09-11 14:36 GMT-05:00 Nicolas Cadieux :

> Hi
> Perhaps this could help.  It uses the processing toolbox.
>
> https://pvanb.wordpress.com/2014/07/01/sampling-raster-
> values-at-point-locations-in-qgis-an-update/
>
> Envoyé de mon iPad
>
> Le 8 sept. 2016 à 18:10, Carlos Cerdán [via OSGeo.org <http://osgeo.org>]
> <[hidden email] <http:///user/SendEmail.jtp?type=node&node=5285189&i=0>>
> a écrit :
>
> Hi list:
>
> I have got a rasters set for montly precipitation, between 1981 and 2015,
> with names 1981-01; 1981-02; etc. so, in a files browser, 420 files (36
> years x 12 months) are showed, ordered.
>
> I also have a shape of points where I want to sampling points whit such
> plugin, but when I use it, fields are ordered randomly, so I'll have to use
> table manager plugin to order fields.
>
> Some advice about how to make it directly, keeping order? Does "point
> sampling tool" plugin keep order with some way to order layers in QGIS
> panel?
>
> As a shape file has limitations about the number of fields (255?) I have
> to do it in parts of 10 years. After it, i hope to join these parts in
> Spatialite. Is there some way to do it directly in Spatialite?
>
> Greetings
>
> Carlos Cerdán
>
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[Qgis-user] Sampling points, keeping order

[Carlos Cerdán]

Hi list:

I have got a rasters set for montly precipitation, between 1981 and 2015,
with names 1981-01; 1981-02; etc. so, in a files browser, 420 files (36
years x 12 months) are showed, ordered.

I also have a shape of points where I want to sampling points whit such
plugin, but when I use it, fields are ordered randomly, so I'll have to use
table manager plugin to order fields.

Some advice about how to make it directly, keeping order? Does "point
sampling tool" plugin keep order with some way to order layers in QGIS
panel?

As a shape file has limitations about the number of fields (255?) I have to
do it in parts of 10 years. After it, i hope to join these parts in
Spatialite. Is there some way to do it directly in Spatialite?

Greetings

Carlos Cerdán
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Re: [Qgis-user] Labelling certain contours

[Carlos Cerdán]

Hi Lester:

I'm working with 2.16 and rule labels works fine. Before Andreas' advice,
I've been working with expression "case when...". Not more, rules based is
better...

2016-08-18 10:08 GMT-05:00 Lester Anderson :

> I have QGIS 2.10 (the CASE method works there) and 2.12 here at the
> moment. 2.12 shows the rule-based labelling but it does not work with
> the rule "ELEV" % 1000 = 0 even though it clearly finds all the
> elements when it is tested.
>
> Does it work properly in 2.14 and later then? I can try later on at home.
>
> Cheers
>
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Re: [Qgis-user] Labelling certain contours

[Carlos Cerdán]

Thank you very much Andreas! You're right. I've just tried rule-based label
with a large contours layer and difference in time consumption is notable.

So, in Lester's case, rule would be just:

"ELEV" % 1000 = 0

Regards

Carlos




2016-08-18 8:41 GMT-05:00 Neumann, Andreas :

> Hi Lester/Carlos,
>
> Even better would be to use a rule-based label (available since 2.14 I
> think).
>
> With rule-based labeling it is most likely a bit faster, since QGIS
> doesn't have to deal with all of the contours that are not a multiple of
> 1000.
>
> In your case, with the CASE statement it still has to process every
> contour line.
>
> Andreas
>
> On 2016-08-18 15:31, Lester Anderson wrote:
>
> Thanks Carlos, that worked fine
>
> On 18 August 2016 at 14:11, Carlos Cerdán  wrote:
>
> Hi Lester.
>
> I think you're close to do it. Try this label expression:
>
> case when "ELEV"%1000=0 then "ELEV" end
>
> Good luck
>
> Carlos
>
>
> 2016-08-18 7:49 GMT-05:00 Lester Anderson :
>
>
> Hello,
>
> Is there a simple way of labelling only certain contours rather than all?
>
> I have set up bathymetry styling for thick contours (1000) and thin (100):
> "ELEV" % 1000 = 0  (thick)
> "ELEV" % 1000 <> 0 (thin)
>
> I would like to label only the 1000 contours, i.e. conditional labelling.
>
> Thanks
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Re: [Qgis-user] Labelling certain contours

[Carlos Cerdán]

Hi Lester.

I think you're close to do it. Try this label expression:

case when "ELEV"%1000=0 then "ELEV" end

Good luck

Carlos


2016-08-18 7:49 GMT-05:00 Lester Anderson :

> Hello,
>
> Is there a simple way of labelling only certain contours rather than all?
>
> I have set up bathymetry styling for thick contours (1000) and thin (100):
> "ELEV" % 1000 = 0  (thick)
> "ELEV" % 1000 <> 0 (thin)
>
> I would like to label only the 1000 contours, i.e. conditional labelling.
>
> Thanks
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Re: [Qgis-user] QGIS Crash - Raster Properties

[Carlos Cerdán]

Done!. Thank you Richard for pointing me to bug reporting.

Regards from Perú

Carlos Cerdán

2016-08-16 11:45 GMT-05:00 Richard Duivenvoorde :

> On 16-08-16 16:14, Carlos Cerdán wrote:
> > HI John:
> >
> > Do you have NAN values in your raster file?.
> >
> > I' found that with such layers, QGIS 2.16 crashes when I try to make
> > pseudocolor style,  both Windows and Linux. Perhaps your case is related,
> >
> > Developers, please take note about it.
> >
> > While, if you are in a hurry, try a LTR QGIS version, 2.14 or 2.8 (I'm
> > not sure). Some time ago I could work with this kind of raster layer
> > without troubles.
>
> Hi Carlos,
>
> If you want this to be picked up as a bug/issue, it is better if you
> create an issue for [0] it.
> Especially if you have some sample data with which dev's can test the
> issue. Please attach such (small) dataset to the issue.
>
> Regards,
>
> Richard Duivenvoorde
>
> [0]
> http://qgis.org/en/site/getinvolved/development/bugreporting.html#bugs-
> features-and-issues
>
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Re: [Qgis-user] QGIS Crash - Raster Properties

[Carlos Cerdán]

HI John:

Do you have NAN values in your raster file?.

I' found that with such layers, QGIS 2.16 crashes when I try to make
pseudocolor style,  both Windows and Linux. Perhaps your case is related,

Developers, please take note about it.

While, if you are in a hurry, try a LTR QGIS version, 2.14 or 2.8 (I'm not
sure). Some time ago I could work with this kind of raster layer without
troubles.


Good luck

Carlos Cerdán


2016-08-16 8:05 GMT-05:00 John Easton :

> Good afternoon,
>
>
>
> I’ve been having a problem with QGIS recently… Every time I go to open the
> properties of a raster file, QGIS crashes.
>
>
>
> I have tried uninstalling and reinstalling several different versions of
> QGIS but the problem persists. This didn’t use to happen so I’m at a loss
> as to why it’s started.
>
>
>
> Can you please advise?
>
>
>
> Many thanks,
>
>
>
>
>
> *John Easton*
>
> *Assistant Project Manager*
>
> *john.eas...@weetwood.net *
>
>
>
> [image: cid:image002.jpg@01CDF4C8.1359EF30] <http://www.weetwood.net/>
>
> 70 Cowcross Street, London, EC1M 6EJ
>
> *T *0203 757 5444 *W* *www.weetwood.net <http://www.weetwood.net/> *
>
>
>
> Offices also at
>
> 41 St Paul's Street, Leeds, LS1 2JG (*T* 0113 244 1377) &
>
> Suite 1 Park House, Broncoed Business Park, Wrexham Road, Mold, CH7 1HP (*T
> *01352 700045)
>
>
>
> *Follow us on LinkedIn **[image: cid:image003.png@01CE006F.02FCE0E0]*
> <http://www.linkedin.com/company/weetwood-services?trk=hb_tab_compy_id_877>
>
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>
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>
> Click here to visit our company email disclaimer and policy documents
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> --
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[Qgis-user] QGIS crashes with NAN values

[Carlos Cerdán]

Hi there.

Reporting this issue in QGIS 2.16

I have some monthly precipitation raster layers [1] with "NAN" values where
there isn't calculated values.

When one of this layers is loaded, it's showed fine in grey scale and the
new (and great) hillshade option, but when I try styling a raster layer
with pseudocolor, QGIS crashes. In Ubuntu 16.04 - QGIS 2.16.1 i got
"segment violation". In Windows 7 - QGIS 2.16.0, "Minidump Written to C"

Some one else has this issue?

Regards from Perú.

Carlos Cerdán

[1]
http://ons.snirh.gob.pe/SOURCES/.Peru/.SENAMHI/.PISCO/.Precipitation/.Monthly/.Precipitation/datafiles.html
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Re: [Qgis-user] Label buffer rings

[Carlos Cerdán]

What about to set coordinates for your labels?. You would can calculate X
and/or Y label coordinates as center coordinates plus radius of buffer plus
some aditional length acording your presentation scale. These values must
be in a field and, on your label menu, you must set Ubication as "Data
defined". Even rotation can be controlled this way.

Good luck

Carlos Cerdán

2016-08-09 9:54 GMT-05:00 Bernd Vogelgesang :

> Hi,
> I'm searching for a convenient way to label buffer rings around a central
> point the way I like it.
> The standard layout looks like this in the screenshot.
> https://ibin.co/2qyymNujAt17.jpg
>
> I found no settings to get:
> - the lables be stacked vertically to the top, instead of the default
> horizontally to the left
> - the labels be positioned on the outer line of the buffer zone. I could
> live with the other numbers in the center of the ring, but the 1000 right
> on top of the center is nonsens.
>
> Dragging them manually to a position is still possible, but a "standard"
> way of doing this would be preferable.
>
> Any hints?
>
> Cheers
> Bernd
>
> --
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> Siedlerstraße 2
> 91083 Baiersdorf/Igelsdorf
> Tel: 09133-825374
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Re: [Qgis-user] Integer values ordered as text in attributes table

[Carlos Cerdán]

Thank you Matthias! And thanks to all the QGIS developers crew that give us
your effort to keep updated our lovely GIS application.

Best whishes

Carlos Cerdán

2016-08-01 11:43 GMT-05:00 Matthias Kuhn :

> Hi Carlos,
>
> I fixed this 4h ago and added a regression test so this never happens
> again.
>
> Just wait for the next point release or use an upcoming nightly build.
>
> Best regards Matthias
> On 01/08/16 18:35, Carlos Cerdán wrote:
>
> Hi users list, Hi developers
>
> Just to report about strange behavior in QGIS 2.16 - Ubuntu 16.04: In
> attributes table, when I try to order a field of integer values by clicking
> in their header, it's ordered as a text field.
>
> This field was created as an integer one, their values where taken from a
> field with just numbers, but with text format, so in order to populate my
> integer field, in field calculator i've created an integer field, with 10
> digits and populated their values as: to_integer(field_T). Field_T is the
> one with numbers as text. The new created field is, in fact, an integers
> field, but this issue persists.
>
> Perhaps, Does QGIS 2.16 need some adjust in this portion of code?.
>
> Carlos Cerdán
>
>
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[Qgis-user] Integer values ordered as text in attributes table

[Carlos Cerdán]

Hi users list, Hi developers

Just to report about strange behavior in QGIS 2.16 - Ubuntu 16.04: In
attributes table, when I try to order a field of integer values by clicking
in their header, it's ordered as a text field.

This field was created as an integer one, their values where taken from a
field with just numbers, but with text format, so in order to populate my
integer field, in field calculator i've created an integer field, with 10
digits and populated their values as: to_integer(field_T). Field_T is the
one with numbers as text. The new created field is, in fact, an integers
field, but this issue persists.

Perhaps, Does QGIS 2.16 need some adjust in this portion of code?.

Carlos Cerdán
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Re: [Qgis-user] Open Layers Plugin crashes in QGIS 2.16

[Carlos Cerdán]

Hi Giacomo:

Perhaps it's time to leave OpenLayers plugin. It was my favorite plugin,
but now I'm using Quickmapservices plugin, It's better. It needs two steps
to work: install plugin, open it and get "contributed packets" from
settings.

Good luck

Carlos Cerdán



2016-07-20 9:57 GMT-05:00 Giacomo Fontanelli 
:

> Dear forum
>
> I use QGIS 2.16 with Lubuntu 16.04.64bit.
>
> Software crashes each time I try to use OpenLayerPlugin.
>
> The first time a message appeared with " Python Error: An error has
> occurred while executing Python code. See message log.
>
> I was not able to read the log.
>
> Now when I try to launch the OpenLayersPlugin Qgis automatically quit.
>
> Can you help me?
>
>
> Thank you
>
>
>
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Re: [Qgis-user] package dependency conflict QGIS 2.14.4

[Carlos Cerdán]

Used repositories, only:

deb http://qgis.org/debian xenial main

2016-07-15 11:01 GMT-05:00 Carlos Cerdán :

>
>
>
>> Is there another workaround or is it necessary to change package
>> dependencies in the build environment?
>>
>
>
> Sorry, I don't have another trick (limited linux knowledge) but What
> about to uninstall also these dependencies?. Perhaps you can get an empty
> "field" in order to  "seed" QGIS
>
> If it's useful: I have Ubuntu 16.04 and QGIS 2.16: related libraries
> installed are libspatialte7 (depends libgeos-c1v5 >=3.4.2) . I don't have
> libgdalh, instead it, libgdali.
>
> Good luck
>
> Carlos
>
>
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Re: [Qgis-user] package dependency conflict QGIS 2.14.4

[Carlos Cerdán]

> Is there another workaround or is it necessary to change package
> dependencies in the build environment?
>


Sorry, I don't have another trick (limited linux knowledge) but What
about to uninstall also these dependencies?. Perhaps you can get an empty
"field" in order to  "seed" QGIS

If it's useful: I have Ubuntu 16.04 and QGIS 2.16: related libraries
installed are libspatialte7 (depends libgeos-c1v5 >=3.4.2) . I don't have
libgdalh, instead it, libgdali.

Good luck

Carlos
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Re: [Qgis-user] package dependency conflict QGIS 2.14.4

[Carlos Cerdán]

Hi Otto:

Try uninstalling all QGIS stuff, even GRASS. After that, clean your
repositories and left just your prefered one; update and install again QGIS.

That workaround was my salvation in similar cases (Ubuntu 1x.04 and QGIS
2.x).

All the best

Carlos

2016-07-15 8:27 GMT-05:00 Otto Dassau :

> Hi Jürgen,
>
> yes, entry in /etc/apt/sources.list is
>
> deb http://qgis.org/ubuntugis-ltr trusty main
> deb http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu trusty
> main
> [...]
>
> error message is:
>
> The following packages have unmet dependencies:
>  libgeos-c1v5 : Breaks: libgeos-c1 (< 3.4.2-8~) but 3.4.2-4ubuntu1 is to be
> installed E: Error, pkgProblemResolver::Resolve generated breaks, this may
> be caused by held packages.
>
> Is it because there are still dependencies building and not yet available?
>
> Regards,
> Otto
>
> Am Fri, 15 Jul 2016 15:19:08 +0200
> schrieb Jürgen E. Fischer :
>
> > Hi Otto,
> >
> > On Fri, 15. Jul 2016 at 15:09:29 +0200, Otto Dassau wrote:
> > > trying to update QGIS packages (2.14.4) from ubuntgis-ltr repository on
> > > ubuntu 14.04 gives a dependency conflict.
> >
> > Did you also add the ubuntugis repository?
> >
> > Jürgen
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Re: [Qgis-user] FW: Couldn't load QGIS utils

[Carlos Cerdán]

Thank you very much Matthias... I've just discovered it, and found that
Processing is now part of the core of QGIS, so if someone is updating from
2.14 or less, must unistall the processing plugin to avoid conflicts with
Processing core (sorry if terms are not correct).

Now, all is fine... I hope.

Regards from Peru

Carlos



2016-07-12 9:25 GMT-05:00 Matthias Kuhn :

> Hi Carlos,
>
> As far as I know all functionality available in ftools is available in
> processing.
> There was a lot of duplicated code which was unmaintained so the
> decision was to put the full focus on one tool and avoid doing work twice.
>
> If there's anything missing, please report it!
>
> Regards
> Matthias
>
> On 07/12/2016 03:29 PM, Carlos Cerdán wrote:
> > There is an issue that can be related with this: ftools disappeared in
> > QGIS 2.16  (Ubuntu 16.04. Don't know about windows); so we still can't
> > do basic vectorial geoprocessing. I guess it's under revision.
> >
> > Developers please light us...
> >
> > 2016-07-12 6:33 GMT-05:00 Pim Verver  > <mailto:p...@travelingo.nl>>:
> >
> > Hi all,
> >
> > __ __
> >
> > Yesterday I installed a 64 bits version of QGIS 2.16 and after
> > startup  I got the following popup. After that QGis seems to be
> > working okay (apart from the python disabling). Is there an obvious
> > solution for this problem. I tried both the advanced and the express
> > install, but no luck so far.
> >
> > __ __
> >
> > Couldn't load QGIS utils.
> > Python support will be disabled.
> >
> >
> > Traceback (most recent call last):
> >   File "", line 1, in
> >   File "C:/OSGEO4~1/apps/qgis/./python\qgis\utils.py", line 21, in
> > standard_library.install_aliases()
> >   File
> >
>  
> "C:\OSGEO4~1\apps\Python27\lib\site-packages\future\standard_library\__init__.py",
> > line 483, in install_aliases
> > import test
> >   File "C:\OSGEO4~1\bin\test.py", line 3, in
> > for layer in iface.mapCanvas().layers():
> > NameError: name 'iface' is not defined
> >
> > Python version:
> > 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)]
> >
> > QGIS version:
> > 2.16.0-Nødebo 'Nødebo', d0b3e39
> >
> > Python path:
> > ['C:/OSGEO4~1/apps/qgis/./python', u'C:/Users/Pim/.qgis2/python',
> > u'C:/Users/Pim/.qgis2/python/plugins',
> > 'C:/OSGEO4~1/apps/qgis/./python/plugins',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\matplotlib-1.3.1-py2.7-win-amd64.egg',
> >
>  'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\nose-1.3.3-py2.7.egg',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\tornado-4.0.1-py2.7-win-amd64.egg',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\backports.ssl_match_hostname-3.4.0.2-py2.7.egg',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\certifi-14.05.14-py2.7.egg',
> >
>  
> 'c:\\osgeo4~1\\apps\\python27\\lib\\site-packages\\python_dateutil-2.1-py2.7.egg',
> > 'C:\\OSGEO4~1\\bin\\python27.zip',
> > 'C:\\OSGEO4~1\\apps\\Python27\\DLLs',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\plat-win',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\lib-tk', 'C:\\OSGEO4~1\\bin',
> > 'C:\\OSGEO4~1\\apps\\Python27',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\PIL',
> >
>  'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\jinja2-2.7.2-py2.7.egg',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\markupsafe-0.23-py2.7-win-amd64.egg',
> >
>  'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\pytz-2012j-py2.7.egg',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\win32',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\win32\\lib',
> > 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\Pythonwin',
> >
>  
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\Shapely-1.2.18-py2.7-win-amd64.egg',
> >
>  'C:\\OSGEO4~1\\apps\\Python27\\lib\

Re: [Qgis-user] FW: Couldn't load QGIS utils

[Carlos Cerdán]

Thank you Pim

2016-07-12 9:23 GMT-05:00 Carlos Cerdán :

> Yes, Processing WAS enabled, and it was broken!. I've uninstalled it and
> now all is fine: Processing plugin was in conflict with Processing core.
>
> So... it affects to updates from 2.14 to 2.16. All of you are advised:
> after updating, you must unistall processing plugin, cause now it's part of
> QGIS core.
>
> Good QGISing!
>
> Carlos Cerdán
>
>
>
> 2016-07-12 8:50 GMT-05:00 Richard Duivenvoorde :
>
>> On 12-07-16 15:29, Carlos Cerdán wrote:
>> > There is an issue that can be related with this: ftools disappeared in
>> > QGIS 2.16  (Ubuntu 16.04. Don't know about windows); so we still can't
>> > do basic vectorial geoprocessing. I guess it's under revision.
>>
>> I do not think it is related.
>>
>> Do you have 'processing'-plugin enabled?
>>
>> Because that is the one that provides all vector algorithms nowadays. If
>> you van processing disabled, you will not see them in vector-menu.
>>
>> Else, try to start qgis from command line in a new configuration:
>>
>> qgis --configpath /tmp/foo
>>
>> so you will have a fresh setup (and processing enabled by default).
>>
>> Regards,
>>
>> Richard
>>
>>
>
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Re: [Qgis-user] FW: Couldn't load QGIS utils

[Carlos Cerdán]

Yes, Processing WAS enabled, and it was broken!. I've uninstalled it and
now all is fine: Processing plugin was in conflict with Processing core.

So... it affects to updates from 2.14 to 2.16. All of you are advised:
after updating, you must unistall processing plugin, cause now it's part of
QGIS core.

Good QGISing!

Carlos Cerdán



2016-07-12 8:50 GMT-05:00 Richard Duivenvoorde :

> On 12-07-16 15:29, Carlos Cerdán wrote:
> > There is an issue that can be related with this: ftools disappeared in
> > QGIS 2.16  (Ubuntu 16.04. Don't know about windows); so we still can't
> > do basic vectorial geoprocessing. I guess it's under revision.
>
> I do not think it is related.
>
> Do you have 'processing'-plugin enabled?
>
> Because that is the one that provides all vector algorithms nowadays. If
> you van processing disabled, you will not see them in vector-menu.
>
> Else, try to start qgis from command line in a new configuration:
>
> qgis --configpath /tmp/foo
>
> so you will have a fresh setup (and processing enabled by default).
>
> Regards,
>
> Richard
>
>
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Re: [Qgis-user] FW: Couldn't load QGIS utils

[Carlos Cerdán]

There is an issue that can be related with this: ftools disappeared in QGIS
2.16  (Ubuntu 16.04. Don't know about windows); so we still can't do basic
vectorial geoprocessing. I guess it's under revision.

Developers please light us...

2016-07-12 6:33 GMT-05:00 Pim Verver :

> Hi all,
>
>
>
> Yesterday I installed a 64 bits version of QGIS 2.16 and after startup  I
> got the following popup. After that QGis seems to be working okay (apart
> from the python disabling). Is there an obvious solution for this problem.
> I tried both the advanced and the express install, but no luck so far.
>
>
>
> Couldn't load QGIS utils.
> Python support will be disabled.
>
>
> Traceback (most recent call last):
>   File "", line 1, in
>   File "C:/OSGEO4~1/apps/qgis/./python\qgis\utils.py", line 21, in
> standard_library.install_aliases()
>   File
> "C:\OSGEO4~1\apps\Python27\lib\site-packages\future\standard_library\__init__.py",
> line 483, in install_aliases
> import test
>   File "C:\OSGEO4~1\bin\test.py", line 3, in
> for layer in iface.mapCanvas().layers():
> NameError: name 'iface' is not defined
>
> Python version:
> 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)]
>
> QGIS version:
> 2.16.0-Nødebo 'Nødebo', d0b3e39
>
> Python path:
> ['C:/OSGEO4~1/apps/qgis/./python', u'C:/Users/Pim/.qgis2/python',
> u'C:/Users/Pim/.qgis2/python/plugins',
> 'C:/OSGEO4~1/apps/qgis/./python/plugins',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\matplotlib-1.3.1-py2.7-win-amd64.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\nose-1.3.3-py2.7.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\tornado-4.0.1-py2.7-win-amd64.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\backports.ssl_match_hostname-3.4.0.2-py2.7.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\certifi-14.05.14-py2.7.egg',
> 'c:\\osgeo4~1\\apps\\python27\\lib\\site-packages\\python_dateutil-2.1-py2.7.egg',
> 'C:\\OSGEO4~1\\bin\\python27.zip', 'C:\\OSGEO4~1\\apps\\Python27\\DLLs',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\plat-win',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\lib-tk', 'C:\\OSGEO4~1\\bin',
> 'C:\\OSGEO4~1\\apps\\Python27',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\PIL',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\jinja2-2.7.2-py2.7.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\markupsafe-0.23-py2.7-win-amd64.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\pytz-2012j-py2.7.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\win32',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\win32\\lib',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\Pythonwin',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\Shapely-1.2.18-py2.7-win-amd64.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\wx-2.8-msw-unicode',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\xlrd-0.9.2-py2.7.egg',
> 'C:\\OSGEO4~1\\apps\\Python27\\lib\\site-packages\\xlwt-0.7.5-py2.7.egg']
>
>
>
> Kind regards,
>
>
>
> Pim Verver
>
>
>
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Re: [Qgis-user] QGIS 2.16 download not available?

[Carlos Cerdán]

So, you are so impatient (as me)... I've tried that link and (now) it's
working. Happy QGIS 2.16 discovering

Carlos

2016-07-12 2:56 GMT-05:00 Chris Buckmaster <
chris.buckmas...@runnymede.gov.uk>:

> Hi
>
>
>
> Just trying to download the latest release of QGIS and the file path to
> the exe install file doesn’t appear to work on the main site?
>
>
>
> (http://qgis.org/downloads/QGIS-OSGeo4W-2.16.0-1-Setup-x86_64.exe)
>
>
>
> The downloads directory appears to only go up to 2.12 and I cannot seem to
> find it in the weekly folder (I also deleted my cache just incase it wasn’t
> displaying the latest page version).
>
>
>
> Thanks, Chris
>
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[Qgis-user] Fwd: Default line width in styles

[Carlos Cerdán]

Thank you very much Tyler, that's that I wanted, but it works for the
current project only (QGIS 2.14.3 - Ubuntu).

I would like to set the default width of polygon border lines to all of new
projects in one step.

Perhaps it can be done from a text-configuration file?

2016-05-30 10:44 GMT-05:00 Tyler Veinot :

> Under Project goto--> Project Properties goto--> Default Styles There you
> can change the defaults for new layer symbology including line width.
>
> "
>
>- The *Default Styles* menu lets you control how new layers will be
>drawn when they do not have an existing .qml style defined. You can
>also set the default transparency level for new layers and whether symbols
>should have random colours assigned to them. There is also an additional
>section where you can define specific colors for the running project. You
>can find the added colors in the drop down menu of the color dialog window
>present in each renderer."
>
>
> Good question though, I did not know how to do this until I looked it up.
> Tyler
>
> On Mon, May 30, 2016 at 11:49 AM, Carlos Cerdán 
> wrote:
>
>> Hi list:
>>
>> How can i change the default line width in styles?
>>
>> Sorry if it's a trivial question, but I can't find it. I prefer to work
>> with 1.5 mm but default is 2.6
>>
>> Carlos
>>
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[Qgis-user] Default line width in styles

[Carlos Cerdán]

Hi list:

How can i change the default line width in styles?

Sorry if it's a trivial question, but I can't find it. I prefer to work
with 1.5 mm but default is 2.6

Carlos
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Re: [Qgis-user] QGIS closes unexpectedly

[Carlos Cerdán]

Thank you Randal!

It was not individual rendering. You gave me a great clue: It was the way
how QGIS tries to do rendering: using many cores. So, I turned off this
option (Configuration --> Options --> Rendering --> Render layers in
parallel using many CPU cores ).

Now QGIS is working fine.

So, Is still multi-cores usange under development?  (My processor is Intel®
Core™ i7-3770 CPU @ 3.40GHz × 8 )

Regards from Peru

Carlos Cerdan



2016-05-18 8:34 GMT-05:00 Randal Hale :

> See if this fixes it - https://hub.qgis.org/issues/12577
>
> Right click on your vector file. Go to Properties -> Rendering -> Turn off
> simplify Geometry.
>
> It appears to be an issue with the way QGIS is handling that projection.
>
> I hope that works!
>
>
>
>
> On 05/11/2016 10:34 AM, Carlos Cerdán wrote:
>
> Thank you Randal.
>
> No, I'm not applying SVG styles. It happens even with a layer with single
> style.
>
> I've tried running QGIS with no plugins, or with different layers, but I
> got same behavior. In Windows it's ok.
>
> Carlos
>
>
>
>
>
> 2016-05-11 8:26 GMT-05:00 Randal Hale :
>
>> Are you applying a SVG Style?
>>
>> I'm running Ubuntu 16.04 (xubuntu) with the same repo and it's not
>> Crashing - BUT - it did when applying an SVG style at 2.14.0 and 2.14.1 -
>> but I think that issue is fixed now (or it has stopped for me).
>>
>> Randy
>>
>>
>> On 05/11/2016 09:20 AM, Carlos Cerdán wrote:
>>
>> Sorry, i mistook data. It's QGIS 2.14.2 and Ubuntu 16.04
>>
>> But I'm in same trouble: QGIS closes unexpectedly specially (but not
>> always) when I apply a style
>>
>> Running from terminal, when it happens, I get this message:
>>
>>
>> *ERROR 6: EPSG PCS/GCS code 53009 not found in EPSG support files.  Is
>> this a valid EPSG coordinate system? Violación de segmento*
>> (Segmentation fault?)
>>
>> My QGIS repo is http://qgis.org/debian xenial main
>>
>> Please some idea about what it's wrong? It's a 2.14.2 QGIS bug?
>>
>> Carlos Cerdán
>>
>>
>> 2016-05-09 12:27 GMT-05:00 Carlos Cerdán < 
>> sig.up...@gmail.com>:
>>
>>> Hi there:
>>>
>>> QGIS 2.14.3 - Ubuntu 16.04
>>>
>>> My QGIS installation begun to fail since I've updated to 2.14.3. It
>>> closes unexpectedly. I have not found a patron, sometimes it's in a zoom,
>>> changing style, trying to open a layer, etc.
>>>
>>> Someone has similar trouble?
>>>
>>> Before update, all was fine. Is it something in new packets? Perhaps
>>> it's a plugin?. Compiz effects? Ubuntu's classic desktop?
>>>
>>> Please if some has an idea, it's welcome.
>>>
>>> Carlos Cerdán
>>>
>>
>>
>>
>> ___
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>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>
>> --
>> -
>> Randal Hale
>> North River Geographic Systems, Inchttp://www.northrivergeographic.com
>> 423.653.3611 rjh...@northrivergeographic.com
>> twitter:rjhale 
>> http://about.me/rjhalehttp://www.northrivergeographic.com/introduction-to-quantum-gishttps://www.facebook.com/NRGSInc
>>
>>
>
>
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>
> --
> -
> Randal Hale
> North River Geographic Systems, Inchttp://www.northrivergeographic.com
> 423.653.3611 rjh...@northrivergeographic.com
> twitter:rjhale 
> http://about.me/rjhalehttp://www.northrivergeographic.com/introduction-to-quantum-gishttps://www.facebook.com/NRGSInc
>
>
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Re: [Qgis-user] QGIS closes unexpectedly

[Carlos Cerdán]

Thank you Randal.

No, I'm not applying SVG styles. It happens even with a layer with single
style.

I've tried running QGIS with no plugins, or with different layers, but I
got same behavior. In Windows it's ok.

Carlos





2016-05-11 8:26 GMT-05:00 Randal Hale :

> Are you applying a SVG Style?
>
> I'm running Ubuntu 16.04 (xubuntu) with the same repo and it's not
> Crashing - BUT - it did when applying an SVG style at 2.14.0 and 2.14.1 -
> but I think that issue is fixed now (or it has stopped for me).
>
> Randy
>
>
> On 05/11/2016 09:20 AM, Carlos Cerdán wrote:
>
> Sorry, i mistook data. It's QGIS 2.14.2 and Ubuntu 16.04
>
> But I'm in same trouble: QGIS closes unexpectedly specially (but not
> always) when I apply a style
>
> Running from terminal, when it happens, I get this message:
>
>
> *ERROR 6: EPSG PCS/GCS code 53009 not found in EPSG support files.  Is
> this a valid EPSG coordinate system? Violación de segmento* (Segmentation
> fault?)
>
> My QGIS repo is http://qgis.org/debian xenial main
>
> Please some idea about what it's wrong? It's a 2.14.2 QGIS bug?
>
> Carlos Cerdán
>
>
> 2016-05-09 12:27 GMT-05:00 Carlos Cerdán :
>
>> Hi there:
>>
>> QGIS 2.14.3 - Ubuntu 16.04
>>
>> My QGIS installation begun to fail since I've updated to 2.14.3. It
>> closes unexpectedly. I have not found a patron, sometimes it's in a zoom,
>> changing style, trying to open a layer, etc.
>>
>> Someone has similar trouble?
>>
>> Before update, all was fine. Is it something in new packets? Perhaps it's
>> a plugin?. Compiz effects? Ubuntu's classic desktop?
>>
>> Please if some has an idea, it's welcome.
>>
>> Carlos Cerdán
>>
>
>
>
> ___
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>
>
> --
> -
> Randal Hale
> North River Geographic Systems, Inchttp://www.northrivergeographic.com
> 423.653.3611 rjh...@northrivergeographic.com
> twitter:rjhale 
> http://about.me/rjhalehttp://www.northrivergeographic.com/introduction-to-quantum-gishttps://www.facebook.com/NRGSInc
>
>
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Re: [Qgis-user] QGIS closes unexpectedly

[Carlos Cerdán]

Sorry, i mistook data. It's QGIS 2.14.2 and Ubuntu 16.04

But I'm in same trouble: QGIS closes unexpectedly specially (but not
always) when I apply a style

Running from terminal, when it happens, I get this message:


*ERROR 6: EPSG PCS/GCS code 53009 not found in EPSG support files.  Is this
a valid EPSG coordinate system?Violación de segmento* (Segmentation fault?)

My QGIS repo is http://qgis.org/debian xenial main

Please some idea about what it's wrong? It's a 2.14.2 QGIS bug?

Carlos Cerdán


2016-05-09 12:27 GMT-05:00 Carlos Cerdán :

> Hi there:
>
> QGIS 2.14.3 - Ubuntu 16.04
>
> My QGIS installation begun to fail since I've updated to 2.14.3. It closes
> unexpectedly. I have not found a patron, sometimes it's in a zoom, changing
> style, trying to open a layer, etc.
>
> Someone has similar trouble?
>
> Before update, all was fine. Is it something in new packets? Perhaps it's
> a plugin?. Compiz effects? Ubuntu's classic desktop?
>
> Please if some has an idea, it's welcome.
>
> Carlos Cerdán
>
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[Qgis-user] QGIS closes unexpectedly

[Carlos Cerdán]

Hi there:

QGIS 2.14.3 - Ubuntu 16.04

My QGIS installation begun to fail since I've updated to 2.14.3. It closes
unexpectedly. I have not found a patron, sometimes it's in a zoom, changing
style, trying to open a layer, etc.

Someone has similar trouble?

Before update, all was fine. Is it something in new packets? Perhaps it's a
plugin?. Compiz effects? Ubuntu's classic desktop?

Please if some has an idea, it's welcome.

Carlos Cerdán
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Re: [Qgis-user] QGIS freezes in designer

[Carlos Cerdán]

I also happens in Windows 7 - 64 bits / QGIS 12.4.1

2016-03-31 15:36 GMT-05:00 Carlos Cerdán :

> HI there
>
> QGIS 2.14.1
> Ubuntu 15.10 - 64 bits
>
> In designer, when I try to change the width of one map through properties,
> QGIS freezes.
>
> It happens if i select the current value in the "width" box of "position
> and size" and try to overwrite it with another value, typing it.
>
> If I change the size by clicking and dragging it goes fine.
>
> Someone else has this error? It's a bug?
>
> Carlos Cerdán
>
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[Qgis-user] QGIS freezes in designer

[Carlos Cerdán]

HI there

QGIS 2.14.1
Ubuntu 15.10 - 64 bits

In designer, when I try to change the width of one map through properties,
QGIS freezes.

It happens if i select the current value in the "width" box of "position
and size" and try to overwrite it with another value, typing it.

If I change the size by clicking and dragging it goes fine.

Someone else has this error? It's a bug?

Carlos Cerdán
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Re: [Qgis-user] Query in QGIS

[Carlos Cerdán]

Another thing to check:

- Is your map file (jpg image) georeferenced?. If not, use Raster -->
Georeferencer --> Georeferencer to do it. You must select the same SRC that
your points are.

Good luck

Carlos Cerdán





2016-03-29 7:41 GMT-05:00 Nicolas Cadieux :

> Hi,
>
> List of things to check:
> Are long/lat inverted?
>
> Is your other map in the same CRS? (Coordinate Reference system?) If not,
> it can be fixed by making sure you have "CRS on the fly reprojection"
> activated in the options.  Also make sure that QGIS "ask" for new layers
> that have no CRS).
>
> Nicolas
> On Mar 29, 2016 08:19, "Manoj Soni [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5258688&i=0>> wrote:
>
> Dear Users
>
> Greetings !!
>
> I am new to QGIS ( Version 2.8) . I have a map file (jpg image) of a
> district
>
> I also have an excel file having latitude and longitude of 20 Hospitals in
> that district.
>
> So far i have converted that excel file in to tab limited file.
>
> Then i added one layer in QGIS Desktop and that shows all 20 hospitals as
> points.
>
> But these 20 points are showing in open area, not in the district map
>  boundary.
>
> How do i put image file and then show 20 hospital in that map.
>
> Any idea will be grateful.
>
> Thanks and Regards
> Manoj
>
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Re: [Qgis-user] New Shapefile Features Fail to Save

[Carlos Cerdán]

Hi Springfield:

I've had similar trouble some time ago, as a QGIS beginner user. Previous
given advices are for not too-beginner users, but I think my experience can
be useful for the list (or even for you?):

That time my error was my Snapping options: I had selected two or three
layers and it was selected the "avoid intersections" option, then, when I
added new digitized polygons, they were splitted or deleted (as you tell)
because new polygons were intersecting marked layers in snapping options.
It fixed when new digitizing shape was the one marked (of course to avoid
intersections between her elements) .

Yes it was something simple, my foul. Is it not same trouble?. If so, Check
it in "Configuration  --> Snapping options --> Change the Self-assembling
mode to "advanced" and be sure that "avoid intersections" is marked in your
target layer only.

Cheers,

Carlos Cerdán

2016-02-02 20:57 GMT-05:00 Springfield Harrison :

> Hello Group,
>
> Am using QGIS 2.10.1 and have done so without significant
> problems for many months.  I am attempting to create simple polygons in a
> shapefile by direct vertex entry or copying polygons from another shapefile
> layer and pasting them into the active layer.
>
> In almost every case, these features disappear.  There is an
> entity entry in the attribute table but there are no polygons created.  In
> one case a polygon was created but it was not the shape that I digitized;
> no more polygons could be created although the process for doing so appears
> to be working.  No error messages were created.  The CRS for the project
> and the shapefile are the same.
>
> The shapefile can be opened in another GIS but has no content.
>
> Here are some product details:  QGIS version  2.10.1-Pisa  QGIS
> code revision  d20c5b7 <https://github.com/qgis/QGIS/commit/d20c5b7>
>
> Thanks very much for any help you can render, Cheers . . . . . .
> . . Springfield Harrison
>
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Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

[Carlos Cerdán]

Hi Eddison:

Try r.fillnulls from Processing or directly in GRASS.

So, we have 30 m SRTMS in http://www2.jpl.nasa.gov/srtm/ . It'll be
interesting to compare with ASTER GDEM

Cheers


2016-01-27 13:25 GMT-05:00 Eddison Araya :

>
>
> Hola, how eliminate gaps in SRTM 30 meters?, in QGIS see no data areas
> (gaps). Thank you
>
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Re: [Qgis-user] desktop icons on fresh windows

[Carlos Cerdán]

Same experience here but...

*Dear developers,* maybe a short "readme" will be useful to introduce to
new *lone* Windows user to GRASS and SAGA as other independent GIS
applications which are useful to QGIS because this last one uses many
modules of them through Processing (or grass plugin); and explain that it
is done because those are free software, and one practice in the free
software community is: if one application can do well a task, then we use
it and we (well,all of you developers) help to develop this application, or
make another better one, or make plugins, documentation, etc.

That is more or less that I say to new users (all of them Windows users)
and they were always surprised about the idea of free software
collaboration. I also talk about QGIS browser; about GRASS and his raster
skills; about Qt designer, Msys... and after that, we "clean" the desktop
and left just "QGIS desktop" and QGIS browser.

So... What do you think about a short "readme" with some explanation about
why other applications were installed with QGIS in Windows? (and Mac?), and
why Linux users must install GRASS and SAGA with QGIS.

Best whishes

Carlos Cerdán

2016-01-22 17:40 GMT-05:00 Michael Treglia :

> Hi Richard,
>
> I think that's a good suggestion, as I've had the exact same experience
> with new users (and it creates some desktop clutter).
>
> As a regular QGIS user, I actually tend to remove the icons other than
> qgis desktop and open up anything else I need via start menu or command
> line.
>
>
> Thanks!
> Cheers,
> mike
>
> On Fri, Jan 22, 2016 at 4:07 PM, Richard Duivenvoorde  > wrote:
>
>> Hi Users,
>>
>> I've installed QGIS for other beginning QGIS users recently.
>>
>> And almost 8 out of 10 are overwhelmed with the number of icons that are
>> place on their desktop, and do not know which one to 'start'.
>>
>> What about with a fresh windows install ONLY place th QGIS-Desktop
>> window on your desktop, all other stuff (designer, browser, cli etc etc)
>> are already available.
>>
>> Does this sound as a good idea? Please let me/us know...
>>
>> Second step is to find out how to do this :-)
>>
>> Regards,
>>
>> Richard
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Re: [Qgis-user] Break a line up into lines of equal segments

[Carlos Cerdán]

Hi Tom:

Maybe QChainage plugin is what you're looking for:

*This plugin takes line features and creates a new layer of points in
provided distances on top of this Lines. Optionally you can set the
startpoint (distance from the start of the line) and the endpoint (stop
before reaching the end of the line) and automatically label the new points
with the distances.*

good luck

Carlos


2015-12-07 9:41 GMT-05:00 Leahy, Thomas A. :

>
>
>
>
>Hello,
>
>
>
> Is there a way to draw a line and then break it up into equal
> segments?
>
>
>
>  Best Regards,
>
>  Tom
>
>
>
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Re: [Qgis-user] ECW on Ubuntu

[Carlos Cerdán]

Andre:

Thank you very much for your advice, but I had not success installing ECW
support for my QGIS 2.12 on Ubuntu 14.04. I was trying many advices, and
I've probably left a mess in my installation then, I've surrendered and
when I need to work with ECW images I turn on my virtual PC with Windows.

I hope that developers will can do easy to read ECW images on Linux in a
close future.

Carlos Cerdán

2015-11-04 14:21 GMT-05:00 Andre Joost :

> Am 04.11.2015 um 16:43 schrieb Carlos Cerdán:
>
>> Thank you very much Richard.
>>
>> After reading (and trying) your link, I've been looking for more recent
>> help. I found this:
>>
>> [1] How to install QGis with ECW Support on Linux
>>
>> As there isn't libgdal-ecw-src on last ubuntugis repository, when [1] says
>> "sudo apt-get install libgdal-ecw-src",  I've tried install it following:
>>
>> [2]  libecw building for gdal
>>
>>
> If you are on Ubuntu 14.04, you can still try my advice here:
>
>
> http://gis.stackexchange.com/questions/94870/unable-to-install-ecw-support-on-lubuntu-14-04
>
> And yes, it is a kind of self-compiling.
>
> HTH,
> André Joost
>
>
>
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Re: [Qgis-user] ECW on Ubuntu

[Carlos Cerdán]

Thank you very much Richard.

After reading (and trying) your link, I've been looking for more recent
help. I found this:

[1] How to install QGis with ECW Support on Linux

As there isn't libgdal-ecw-src on last ubuntugis repository, when [1] says
"sudo apt-get install libgdal-ecw-src",  I've tried install it following:

[2]  libecw building for gdal

I'm not sure about [2]. Is it the way to install libecw compiling it?.
After that, It's supposed that libgdal-ecw-src is installed but I can't
find it in Synaptic.

After this, I've returned to [1], doing:

sudo gdal-ecw-build /usr/local/ecwjp2_sdk
gdalinfo --formats | grep -i ecw

On last step, I don't got any response, and QGIS can't still load ECW images

Some extra advice?

Regards

Carlos Cerdán

[1]
http://makina-corpus.com/blog/metier/2013/howto-install-qgis-with-ecw-support-on-linux

[2] https://gist.github.com/fritzvd/5867088






2015-11-04 4:54 GMT-05:00 Richard Duivenvoorde :

> On 03-11-15 16:08, Carlos Cerdán wrote:
> > Hi list:
> >
> > What about ecw support for QGIS 2.12 on Ubuntu?
> >
> > Looking for it I've found that it's not (yet) supported (
> >
> http://gis.stackexchange.com/questions/158724/is-it-possible-to-import-ecw-images-into-qgis-2-10-for-ubuntu
> > )
> >
> > Any advice to get ecw reading on 2.12 on Ubuntu?
>
> Hi Carlos,
>
> you have to get hold of a GDAL library which has ecw support compiled in
> it. The ecw lib is closed source and GDAL may not be made available as
> binary with it. So compile yourself, and as soon as GDAL is able to read
> ecw (only read is supported) then QGIS is able to read.
>
> Some years ago I have been able to do this with the following link:
>
> https://lists.osgeo.org/pipermail/qgis-user/2011-July/012724.html
>
> (you have to google for the ecw libs though)
> I have not yet been able to compile with newer ecw version.
>
> Regards,
>
> Richard Duivenvoorde
>
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[Qgis-user] ECW on Ubuntu

[Carlos Cerdán]

Hi list:

What about ecw support for QGIS 2.12 on Ubuntu?

Looking for it I've found that it's not (yet) supported (
http://gis.stackexchange.com/questions/158724/is-it-possible-to-import-ecw-images-into-qgis-2-10-for-ubuntu
)

Any advice to get ecw reading on 2.12 on Ubuntu?

Carlos Cerdán
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Re: [Qgis-user] Announcing the release of QGIS 2.12 'Lyon'

[Carlos Cerdán]

Thank you very much QGIS Team, we were expecting for it anxiously.

2015-10-26 7:36 GMT-05:00 Jürgen E. :

> QGIS is a user friendly Open Source Geographic Information System
> that runs on Linux, Unix, Mac OSX, and Windows.
>
> We are very pleased to announce the release of QGIS 2.12 'Lyon'. Lyon was
> the
> host city to our developer meet up in April 2012.
>
> Latest Release
>
> This is another regular release following our four monthly schedule.  It
> again
> brings many nice new features to QGIS.
>
> Please also note that we're constantly keeping our long term release QGIS
> 2.8
> 'Wien' in good shape to better suit more conservative production setups.
>
> New Features in QGIS 2.12 'Lyon'
>
> QGIS 2.12 includes many great new features, tweaks and enhancements to
> make the
> most popular Free desktop GIS even more feature filled and useful.  Visit
> the
> visual changelog that highlights some of the new additions
> (http://qgis.org/en/site/forusers/visualchangelog212/).
>
> Whenever new features are added to software they introduce the possibility
> of
> new bugs - if you encounter any problems with this release, please file a
> ticket on the QGIS Bug Tracker (http://hub.qgis.org).
>
> The source code and binaries for Windows, Debian and Ubuntu are already
> available via the large download link on our home page: http://qgis.org.
> More
> packages will follow as soon as the package maintainers finish their work.
> Please revisit the page if your platform is not available yet.
>
>
> Thanks
>
> Finally we would like to thank our official sponsors for the invaluable
> financial support they provide to this project:
>
> GOLD Sponsor: Asia Air Survey, Japan
> SILVER Sponsor: AGH University of Science and Technology, Krakow,
> Poland
> SILVER Sponsor: State of Vorarlberg, Austria
> SILVER Sponsor: Office of Public Works, Ireland, Ireland
> SILVER Sponsor: Sourcepole AG, Switzerland
> BRONZE Sponsor: Lutra Consulting, UK
> BRONZE Sponsor: WhereGroup GmbH & Co. KG, Germany
> BRONZE Sponsor: Nicholas Pearson Associates, UK
> BRONZE Sponsor: QGIS Poland, Poland
> BRONZE Sponsor: www.terrelogiche.com, Italy
> BRONZE Sponsor: GeoSynergy, Australia
> BRONZE Sponsor: Gaia3D, South Korea
> BRONZE Sponsor: Royal Borough of Windsor and Maidenhead, UK
> BRONZE Sponsor: Chartwell Consultants Ltd, Canada
> BRONZE Sponsor: Trage Wegen vzw, Belgium
> BRONZE Sponsor: GFI - Gesellschaft für Informations technologie
> mbH, Germany
> BRONZE Sponsor: GKG Kassel,(Dr.-Ing. Claas Leiner), Germany
> BRONZE Sponsor: GIS-Support, Poland
> BRONZE Sponsor: ADLARES GmbH, Germany
> BRONZE Sponsor: www.molitec.it, Italy
> BRONZE Sponsor: www.argusoft.de, Germany
> BRONZE Sponsor: Customer Analytics, USA
> BRONZE Sponsor: Avioportolano Italia, Italy
> BRONZE Sponsor: Faculty of Geology,
> Geophysics and Environmental Protection,
> AGH, University of Science and Technology, Poland
> BRONZE Sponsor: Urbsol, Australia
> BRONZE Sponsor: MappingGIS, Spain
> BRONZE Sponsor: GIS3W, Italy
>
> A current list of donors who have made financial contributions large and
> small
> to the project can be seen on our donors list
> (http://qgis.org/en/site/about/sponsorship.html#list-of-donors). If you
> would
> like to become and official project sponsor, please visit our sponsorship
> page
> (http://qgis.org/en/site/about/sponsorship.html#sponsorship) for details.
> Sponsoring QGIS helps us to fund our six monthly developer meetings,
> maintain
> project infrastructure and fund bug fixing efforts.
>
> QGIS is Free software and you are under no obligation to pay anything to
> use it
> - in fact we want to encourage people far and wide to use it regardless of
> what
> your financial or social status is - we believe empowering people with
> spatial
> decision making tools will result in a better society for all of humanity.
>
>
> Happy QGISing!
>
> Regards,
>
> The QGIS Team!
>
> --
> Jürgen E. Fischer   norBIT GmbH Tel. +49-4931-918175-31
> Dipl.-Inf. (FH) Rheinstraße 13  Fax. +49-4931-918175-50
> Software Engineer   D-26506 Norden
> http://www.norbit.de
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Re: [Qgis-user] "QGIS User Survey" now available in Spanish / "Encuesta sobre el uso de QGIS" disponible en Castellano

[Carlos Cerdán]

 Muchas gracias Luigi. Ya compartí vía Facebook.

Saludos desde Perú

Carlos Cerdán

2015-10-16 4:47 GMT-05:00 Luigi Pirelli :

> Hi
>
> It's a pleasure to promote the Survey in Spanish
>
> http://blog.qgis.org/2015/10/16/take-the-qgis-user-survey-in-spanish/
>
> regards
>
> Luigi Pirelli
>
> ***
>
> Hola
>
> Es un placer presentar la "Encuesta sobre el uso de QGIS" en Castellano
>
> Unha perta (Galego ;)
>
> Luigi Pirelli
>
>
> **
> * LinkedIn: https://www.linkedin.com/in/luigipirelli
> * Elance: https://www.elance.com/s/edit/luigipirelli/
> * GitHub: https://github.com/luipir
> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
> * Mastering QGIS:
> https://www.packtpub.com/application-development/mastering-qgis
>
> **
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Re: [Qgis-user] RECLASSIFICATION ON A RASTER LAYER

[Carlos Cerdán]

Hi Mariana:

The official QGIS manual has a lack in this point, so here is a tip for
Raster Calculator: You must to use logical expressions for your task:

(raster >=0 and raster<1)*1+(raster>=1 and raster<2.5)*2+(raster>=2.5 and
raster<4.5)*3 ... etc

Where "raster" is the layer that you want reclassify. Expression between
parentheses takes 1 value if it's true, else 0. Result is  reclassification
that you want.

Regards from Perú

Carlos Cerdán

2015-09-21 11:11 GMT-05:00 Mariana Buzzi :

>
> -- Forwarded message --
> From: Mariana Buzzi 
> Date: 2015-09-21 13:03 GMT-03:00
> Subject: [Qgis-user] (no subject)
> To: qgis-user@lists.osgeo.org
>
>
> Hello people! How are you?
> I connect with you because I want to do a reclassification on a raster
> layer, the same information is pendient. What I want is to perform a
> reclassification so that the slope values quedende me as follows:
>
> 0-1 -> give them the new value of 1
> 1 to 2.25 -> give the new value of 2.
> 2.25 to 4.5 -> give the new value of 3
> 4.5 to 9 -> give the new value of 4
> 9 and higher than 9 ---> give the new value of 5
>
> Of course, I appreciate it and it is always useful answers !!!
> They have always helped me to move forward!
>
> Regards!
>
> Mariana
> Patagonia Argentina
>
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Re: [Qgis-user] Sum of wastes.

[Carlos Cerdán]

Hi Ourizo:

If your task is about the total sum of wastes, perhaps it's enough the
Group Stats plugin.

Good luck

Carlos Cerdan

2015-09-10 3:49 GMT-05:00 Ourizo Cacho :

> Hi all,
> I have 6 point different layers with XY coordinates.
> Each point represents a company where wastes are generated.
> The total amount of wastes varies a lot among the different locations and
> there are thousands of points.
> Im not so interested in the distribution of the companies as in the total
> amount of wastes as a total sum.
>
> Which do you think it would be the best of way of getting this done??.
>
> I´ve thought of making buffers around each point considering the quantity
> of waste generated in each location.
>
> Could I do better using the plugin Heatmap??
>
> Any idea??
>
> Thanks in advance.
>
> ---
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Re: [Qgis-user] Reclass Vector

[Carlos Cerdán]

Hola Mariana

Pues el álgebra de mapas me parece mucho más sencilla en capas raster,
trabajadas con la correspondiente calculadora.

Creo que en el muestreo de especies, por la resolución espacial y los
detalles necesarios en una tabla de atributos, es mejor continuar en
formato vectorial, sin embargo, si en tu proyecto tienes capas raster como
la precipitación, pendiente, etc y éstas son utilizadas para algún modelo
en combinación con la capa de especies, entonces si, creo que en este caso
es es mejor rasterizar tu grilla.

Saludos

Carlos Cerdán

PD Espero que nadie proteste por utilizar el idioma Español en esta lista
es en idioma Inglés.Si aún tienes preguntas, también prueba la lista en
español. Aunque esta es menos activa, tal vez haya alguien más que te apoye.






2015-08-17 12:01 GMT-05:00 Mariana Buzzi :

> Hi Carlos!
> No se me ocurrio trabajarlo en raster. Es un ejercicio que se planteo
> desde una catedra de la facultad. Antiguamente trabajamos con Idrisi pero a
> partir de ahora queremos q los alumnos usen open source.
> Desde raster es mas sencillo?
> El area de estudio a conservar fue creada de forma arbitraria solo para
> aprender la tecnica.
> Gracias
> Saludos desde la Patagonia.
> Mariana.
> El 17/08/2015 10:12, "Carlos Cerdán"  escribió:
>
>> Hi Mariana:
>>
>> If I understand you well, you need to create a new field, making an
>> expresssion in field calculator, something as:
>>
>> case
>> when conservative>=1 and conservative<4 then 1
>> when conservative>=4 and conservartive<32 then 0
>> end
>>
>> After that, you can try intersection... or union.
>>
>> What about to work as raster?
>>
>> Saludos desde Perú
>>
>> Carlos Cerdán
>>
>> 2015-08-16 23:42 GMT-05:00 Mariana Buzzi :
>>
>>> HELLO Guys!!
>>>
>>> I want to make a demarcation of a nature reserve area, considering the
>>> wealth of species and the conservation value of each. For this purpose in
>>> the area of ​​study I designed a grilling in which I included the species
>>> richness and other gridding the area in which I included the conservative
>>> value species.
>>>
>>> What I do now is a relclasificación of these data as follows:
>>> For cells with conservative values ​​[1-4) set the value of 1.
>>> For cells with conservative [4-32 values) set to 0.
>>>
>>> Once this is done, I want to make an intersection of information, to
>>> establish the relationship between the areas defined as priority and
>>> species richness.
>>>
>>> My problem starts to perform the mecionada reclassification, ie
>>> designate values ​​of 0 and 1 at intervals raised. The other problem is how
>>> do I make the crossing of information? What function the qgis?
>>>
>>> Thank You 
>>> I await your news 
>>>
>>> PS: I speak Spanish.
>>>
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>>
>>
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Re: [Qgis-user] Reclass Vector

[Carlos Cerdán]

Hi Mariana:

If I understand you well, you need to create a new field, making an
expresssion in field calculator, something as:

case
when conservative>=1 and conservative<4 then 1
when conservative>=4 and conservartive<32 then 0
end

After that, you can try intersection... or union.

What about to work as raster?

Saludos desde Perú

Carlos Cerdán

2015-08-16 23:42 GMT-05:00 Mariana Buzzi :

> HELLO Guys!!
>
> I want to make a demarcation of a nature reserve area, considering the
> wealth of species and the conservation value of each. For this purpose in
> the area of ​​study I designed a grilling in which I included the species
> richness and other gridding the area in which I included the conservative
> value species.
>
> What I do now is a relclasificación of these data as follows:
> For cells with conservative values ​​[1-4) set the value of 1.
> For cells with conservative [4-32 values) set to 0.
>
> Once this is done, I want to make an intersection of information, to
> establish the relationship between the areas defined as priority and
> species richness.
>
> My problem starts to perform the mecionada reclassification, ie designate
> values ​​of 0 and 1 at intervals raised. The other problem is how do I make
> the crossing of information? What function the qgis?
>
> Thank You 
> I await your news 
>
> PS: I speak Spanish.
>
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Re: [Qgis-user] GRASS tool explorer

[Carlos Cerdán]

Thank you very much Radim.

I thought my QGIS 2.10 installation had something wrong, but it was just a
change in the way to access the layers, that I couldn't guess because I
didn't used to use the QGIS browser

. Let me know if you are missing any functionality.
>
>
Thank you again, I will.

Regards from Peru

Carlos Cerdan
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[Qgis-user] GRASS tool explorer

[Carlos Cerdán]

Hi list:

I'm using QGIS 2.10 on Ubuntu 12.04.

My GRASS tool has left the file explorer tab. It just has "Module tree" and
"List of modules".

It's possible to restore the explorer tab?

Thank you in advance

Carlos Cerdán
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Re: [Qgis-user] Problem in Print-Composer with Google Image in web map

[Carlos Cerdán]

Hi Suvendu

Perhaps your issue has relation with this bug:
https://hub.qgis.org/issues/11404



2015-06-23 2:11 GMT-05:00 Suvendu Roy :

> Dear colleagues,
> I am facing a problem during the export of output map using google earth
> image and vector layers. Within the print composer, it is ok, but when I
> take any output map, vector layers are not their places, they are moving.
> Please help me, how can I solve it.
> Thanks in advance.
>
>
>
> *Suvendu RoyJunior Research Fellow-UGC, *
> *Department of Geography, University of Kalyani, *
> *Kalyani, Nadia-741235*
>
> *Alternative Mail Id: suvenduroy1...@gmail.com
> Mob. +91 9153128612*
>
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Re: [Qgis-user] Local Government for QGIS

[Carlos Cerdán]

Hi there:

As open source philosophy, personal motivation has a big weight. One
enthusiastic QGIS user can do difference to motivate other GIS users into
QGIS adventure.

I'm working in a local government for two years and half. It took me almost
a year convince other that our geodatabase is public and that we had to
share shapes also, not PDF only (Sorry... life in tropics).

Next step was QGIS. I developed a pilot QGIS course into the office: two
hours each day, per one week, doing exercises with our own data.

QGIS has new followers over here. The seed is sown.

Here, the main feature that attracts to QGIS is the language so i think
it'll be great if plugins can be also translated.

Cheers from Peru

Carlos Cerdán


2015-06-19 6:30 GMT-05:00 Bernhard Ströbl :

> Hi all,
>
> I think this is a useful discussion as QGIS is (at least IMHO) the most
> popular OpenSource GIS in the public sector. From the discussion I
> understand there are two reasons to not use QGIS as the sole GIS in this
> context:
> One are missing features (e.g. missing dwg support). As the discussion
> shows this can easily be overcome by extending QGIS. Someone needs to
> coordinate and pay, of course, but if there are enough users in need of
> this particular feature it will be done. The second reason seems less easy
> to tackle: A local government has many different tasks related to spatial
> information: parks, sewage, streets, water bodies, playgrounds, cadastral
> information etc.. Most administrations lack the knowledge to just take QGIS
> and model the needed data themselves, instead they are willing to pay some
> money to a company that does it for them (and I assume this is what ESRI
> offers with "ArcGIS for Local Government"). But most of these companies are
> tied to a proprietary GIS software. Maybe it is also the other way round:
> the adminstration already has a proprietary GIS and looks for someone to
> implement their needs with it because it is (understandibly) unwilling to
> introduce another GIS for this particular task.
> IMHO the situation is as it is because for the overwhelming majority of
> local government tasks there are no data standards. As soon as data
> standards exist users are more free to choose the software that addresses
> their needs, e.g. WMS-Servers. IMHO this makes it hard "to extend QGIS to
> include more "applied" solutions for local government". There are, however,
> examples: The Swiss QGEP project implementing the Swiss sewage data
> standard, the German PostNAS project implementing the German cadastral data
> standard. For non-stanardized data every user/company is free to model the
> data according to their specific needs therefore QGIS is probably not the
> right addressee. Instead the national QGIS user groups could try to
> standardize their data needs thus making it possible to enhance QGIS to
> support this "standard", which then would lead to an extension of QGIS.
>
> just some more thoughts :)
>
> Bernhard
>
>
> Am 18.06.2015 um 08:10 schrieb Steve Golden:
>
>> I am glad to have sparked some discussion.  Being a FOSS4G application
>> forum,
>> I am not entirely surprised by some of the comments, but all are
>> appreciated. (sorry upfront, this turned into a long post which perhaps
>> would be better suited on a blog of some sort)
>>
>> I am a bit envious of those individuals who work in the public sector
>> outside of the U.S. because it seems like there is more acceptance and
>> directive to use FOSS/FOSS4G as primary applications and not just
>> something
>> that you "kick the tires" with.  As for the use of FOSS4G applications in
>> the States, I think that Randal and others summarized it pretty well (at
>> least perhaps for the mid-sized cities).  I knew of some cities that were
>> using Intergraph or MapInfo, but now it is ESRI all the way.  You read
>> about
>> some larger government organizations using FOSS for GIS web services, but
>> my
>> main focus, at least for this post, is small/mid-sized local government.
>> ESRI seems to have done a very good sales job with their "ArcGIS for Local
>> Government" branding.  And like my original post suggested, if you look at
>> all of the tools, apps, and maps that ESRI provides for "free" (yes, this
>> is
>> part of the sales propaganda) it makes their product look really good for
>> local governments might see it as a great GIS entry point or for those
>> older
>> systems looking to extend into more web mapping or application
>> development.
>> And as others pointed out, there is the reality that you have to have
>> staff
>> that are knowledgeable i

Re: [Qgis-user] Fill symbol with no outline... showing faint outline?

[Carlos Cerdán]

Hi Chris:

Better if you select a thin border width with color same as the fill.

Carlos


2015-06-18 11:06 GMT-05:00 Chris Buckmaster <
chris.buckmas...@runnymede.gov.uk>:

>  Hi
>
>
>
> I am symbolising up my polygon layer which has multiple features with a
> simple red fill, no outline and a 40% layer transparency. When looking at
> the map though I am seeing faint white lines which represent the different
> features. I am wondering what I need to do to remove these white lines as I
> am not specifying an outline for the features?
>
>
>
> Thanks
>
>
>
>
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Re: [Qgis-user] Misaligned Prints

[Carlos Cerdán]

Recurrent question.

See https://hub.qgis.org/issues/11404

Or...

Do you know about SAS planet?. This is a russian aplication that can be
used for download Goolgle Earth, Bing, and other images. You can download
it from https://bitbucket.org/sas_team/sas.planet.bin/downloads.

Tutorial for use it: https://vimeo.com/72592604

An explanation:
http://en.acolita.com/download-georeferenced-images-from-google-earth-maps-bing.html
. If you can't download images at 24x zoom, try 20x or less.

Good luck

Carlos Cerdán

2015-04-24 8:01 GMT-05:00 Simon Lange :

> Using 2.8. Wien.
> Here again a well discussed problem with few solutions (which don´t work
> out for my issue): I use OpenLayer plugin for google physical maps as
> background, then overlay a shp. and try to print out after arranging
> everything in map composer. Looks good until the end, when in the pdf. the
> OSM is at a different place or seems to have a different scale. Somebody
> has got a solution?
> Felix
>
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Re: [Qgis-user] Mozambique´s shapes

[Carlos Cerdán]

DIVA GIS has also country level data: http://www.diva-gis.org/Data

Carlos

2015-04-21 13:09 GMT-05:00 Angel L. Fernandez T. 
:

> Hello all, I am doing a small project and I need some shapes for
> Mozambique. Please, Where I could be found them..
>
> Thanks in advance...
>
> Regards,
> Angel L.
>
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Re: [Qgis-user] use a grass extension via Qgis interface?

[Carlos Cerdán]

Thank you Radim

Yes, I wanted to say the shell in the GRASS plugin.  It sounds that the
next incoming upgrade will be useful for take advantage of all the GRASS
modules. It's great!!

Best wishes

Carlos

2015-04-15 8:51 GMT-05:00 Radim Blazek :

> On Wed, Apr 15, 2015 at 3:29 PM, Carlos Cerdán 
> wrote:
> > Hi Image93?
> >
> > Not all GRASS modules have graphical interface into QGIS, but ALL of them
> > can work in QGIS through the shell prompt, so if you have GRASS 7.0
> working
> > through QGIS, then you can call all their modules via the shell.
>
> If you mean the shell in the GRASS Plugin, then no, it is not yet
> possible, because the plugin is not yet upgraded to GRASS 7. That is
> subject of  ongoing GRASS plugin upgrade[1]. The upgrade should also
> introduce generic UI for modules without UI defined for the plugin
> (without .qgm).
>
> [1] http://www.gissula.eu/qgis-grass-plugin-crowdfunding/
>
> Radim
>
> > Good luck
> >
> > Carlos Cerdan
> >
> >
> > 2015-04-15 8:06 GMT-05:00 image93 :
> >
> >> Good afternoon,
> >>
> >> I'm a qgis and grass user. Currently i'm working on isochrone maps on
> >> Grass
> >> 7.0 thanks to v.isochrones Grass 7.0 extension.
> >>
> >>
> >> Is there a  way in order to use this v.isochrones extension via Qgis
> >> interface?
> >>
> >> Thanks.
> >>
> >>
> >>
> >> --
> >> View this message in context:
> >>
> http://osgeo-org.1560.x6.nabble.com/use-a-grass-extension-via-Qgis-interface-tp5201448.html
> >> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> >> ___
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> >
> >
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Re: [Qgis-user] use a grass extension via Qgis interface?

[Carlos Cerdán]

Hi Image93?

Not all GRASS modules have graphical interface into QGIS, but ALL of them
can work in QGIS through the shell prompt, so if you have GRASS 7.0 working
through QGIS, then you can call all their modules via the shell.

Good luck

Carlos Cerdan


2015-04-15 8:06 GMT-05:00 image93 :

> Good afternoon,
>
> I'm a qgis and grass user. Currently i'm working on isochrone maps on Grass
> 7.0 thanks to v.isochrones Grass 7.0 extension.
>
>
> Is there a  way in order to use this v.isochrones extension via Qgis
> interface?
>
> Thanks.
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/use-a-grass-extension-via-Qgis-interface-tp5201448.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] QGIS GRASS Plugin Upgrade Crowdfunding

[Carlos Cerdán]

Congratulations! Thank you very much Radim. It's time to activate the
ubuntugis repository again.

Best wishes

Carlos Cerdán

2015-03-23 13:56 GMT-05:00 Radim Blazek :

> Hi all,
>
> I have finally launched the crowdfunding campaign to support the GRASS
> plugin upgrade. Briefly, it covers upgrade to GRASS 7, browser
> integration, drag-and-drop import and new vector editing. All the
> details are available here:
>
> http://www.gissula.eu/qgis-grass-plugin-crowdfunding/
>
> Please propagate this info to all relevant channels, national mailing
> lists etc.
>
> Radim
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Re: [Qgis-user] Cannot activate grass

[Carlos Cerdán]

I don't  know. This issue is new for me with QGIS 2.8. Please check it and
if it's the case, report it.

Carlos

2015-03-12 11:08 GMT-05:00 Luís de Sousa :

> Hi Carlos,
>
> Is this bug reported somewhere?
>
> Luís
>
> Carlos Cerdán sig.upagu at gmail.com :
> > Hi Luis
> >
> > Same here. QGIS 2.8.1 on Ubuntu 14.04. That I do is define a new mapset
> in
> > GRASS directly, then close GRASS and open this mapset in QGIS and refine
> > limits and resolution. I suppose this will be fixed in next version of
> QGIS.
> >
> > Best wishes
> >
> > Carlos Cerdán
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Re: [Qgis-user] Cannot activate grass

[Carlos Cerdán]

Hi Luis

Same here. QGIS 2.8.1 on Ubuntu 14.04. That I do is define a new mapset in
GRASS directly, then close GRASS and open this mapset in QGIS and refine
limits and resolution. I suppose this will be fixed in next version of QGIS.

Best wishes

Carlos Cerdán



2015-03-12 6:40 GMT-05:00 Luís de Sousa :

> Dear all,
>
> I am using QGis 2.8.1 on Ubuntu 14.04. Whenever I try to create a new
> mapset with the GRASS plug I get the error message: "Cannot activate
> grass". This issue has been reported by a Windows user at SE:
>
>
> http://gis.stackexchange.com/questions/137025/error-when-creating-a-new-mapset-with-grass-in-qgis
>
> In his case he had to set the system user to "the lowest level" -
> whatever that means - a fix that only applies to Windows. In my case I
> am trying to create mapsets in a folder owned by my user, so there is
> not much else I can do regarding permissions.
>
> Any other ideas? Thanks,
>
> Luís
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Re: [Qgis-user] QGIS Export Map

[Carlos Cerdán]

This works for me:

- In the print composer, insert the map with size equal as the sheet, this
is: if you have an A4 sheet, the map must be same size: 297 x 210 mm.

Please tell us if it also works for you.

Carlos Cerdán


2015-03-08 22:24 GMT-05:00 Nicolas Cadieux :

> Hi,
>
> Remove all layers exept the openlayers layers.  Zoom in and use the "save
> as image"  option ( under project I think). Pan again and take another
> snapshot.  All images will be save and georeferenced with a world file and
> you can then reload them in your project.  Make sure you cite your sources.
>
> Nicolas Cadieux M.Sc.
> Le 2015-03-08 22:56, "lpalao [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5192186&i=0>> a écrit :
>
> Hi QGIS users,
>
> I have a bit of a problem. I am using Open Layers Google Physical Layer as
> background of my other layers. When I layout my maps in Print Composer, the
> layers are well aligned. But when I export it to JPEG or PNG the output
> product is misaligned. I allow on-the-fly option when the layer from Open
> Layers were added. So, I thought this might be causing the issue. But then
> I transformed all of my layers to EPSG 3857 but still problem persist.
>
> Can you help me with this?
>
> I am using QGIS 2.6.1 Brighton installed via OSGeo.
>
> Thanks,
> -Leo
>
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Re: [Qgis-user] Attribute table issue in print composer

[Carlos Cerdán]

Fast answer!!. Thank you Paolo

Regards from Perú

Carlos Cerdán

2015-03-04 11:05 GMT-05:00 Paolo Cavallini :

> Il 04/03/2015 17:03, Carlos Cerdán ha scritto:
> > Inserting an attribute table in print composer, I can't change the font
> > and size of column header, it's fixed as arial 11. Table contents can be
> > changed.  Is it a bug?
> >
> > QGIS 2.8.1 - Ubuntu 12.04 - Spanish
>
> yes, now solved. please wait for 2.8.2
> All the best.
>
> --
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> QGIS & PostGIS courses: http://www.faunalia.eu/training.html
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[Qgis-user] Attribute table issue in print composer

[Carlos Cerdán]

Inserting an attribute table in print composer, I can't change the font and
size of column header, it's fixed as arial 11. Table contents can be
changed.  Is it a bug?

QGIS 2.8.1 - Ubuntu 12.04 - Spanish

Carlos Cerdán
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[Qgis-user] CSVs from Groups Stats and empty cells

[Carlos Cerdán]

Hi list

Using Group Stats (very useful plugin!!), in a resulting table with many
columns and rows, the normal empty cells are showed OK, but when save all
as SCV, resulting file ignores empty cells, so it loses the field order and
it becomes unuseful.

Copy all and paste works fine, but when Groups Stats resulting file is big,
RAM can be poor.

Is it a plugin bug?

Tested in QGIS 2.8.1 on Ubuntu 12.04 - Spanish

Carlos Cerdán
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Re: [Qgis-user] Where is SAGA's polygons intersection

[Carlos Cerdán]

Thank you very much André, I will wait for QGIS 2.8 for use it on
Windows... if this issue is fixed.

On Ubuntu this issue is fixed by unchecking "Use SAGA 2.0.8 syntax". Go to
Processing --> Options --> Provider? (In spanish it says "proveedor") -->
Saga.

On Windows there isn't this option, so SAGA polygon intersection is not
activated.

Regards from Perú

Carlos



As I said, my QGIS 2.6 on Ubuntu (14.04 also) is OK, and

2015-02-28 1:12 GMT-05:00 Andre Joost :

> Am 27.02.2015 um 18:59 schrieb Carlos Cerdán:
>
>  I want to use SAGA Intersection tool from processing in QGIS 2.6, under
>> Windows 7, but it doesn't appear in list of processing modules. Checking
>> SAGA directly, I can see this tool under Modules --> Shapes --> Polygons
>> --> Polygon intersection. It has another name in QGIS processing?
>>
>>
> Same here, and it is missing on ubuntu 14.04 also (QGIS 2.6.1 from
> ubuntugis unstable).
>
> But if you install the latest qgis-dev from osgeo4w, you get Shapes -
> Polygons - Intersect, as well as some other algorithm interfaces that are
> not in original SAGA. So it might be worth to wait for the upcoming QGIS
> 2.8.
>
> HTH,
> André Joost
>
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[Qgis-user] Where is SAGA's polygons intersection

[Carlos Cerdán]

Hi list

I want to use SAGA Intersection tool from processing in QGIS 2.6, under
Windows 7, but it doesn't appear in list of processing modules. Checking
SAGA directly, I can see this tool under Modules --> Shapes --> Polygons
--> Polygon intersection. It has another name in QGIS processing?

QGIS 2.6 on Ubuntu is OK,

Regards

Carlos Cerdan
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[Qgis-user] qgis designer window size fixed

[Carlos Cerdán]

Hi list

I have thiss issue: the designer window size is fixed, a little bit greater
than my screen, but I can't resize it. The "maximize" button is missing.
How can I fix it?

Carlos Cerdan

QGIS 2.6 under Ubuntu 14.04 - 4 desktops - Metacity - Compiz active
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Re: [Qgis-user] Getting OSM layers and shapefiles to line up correctly in pdf print

[Carlos Cerdán]

Hi Bill

Perhaps your question is related to Cao Minh Tu's old mail:
http://lists.osgeo.org/pipermail/qgis-user/2012-February/015579.html

Please tell us if it does.

Regards

Carlos Cerdán



2015-01-09 16:06 GMT-05:00 Bill Hudspeth :

> Hello,
>
> Can somewhat please point me to a discussion of this issue, which I'm sure
> has been discussed before. I can't find a workaround that is effective. I
> am adding an OSM layer in epsg 3857, setting the project projection to 3857
> with 'on the fly' transformation...while the layers line up nicely in the
> main qgis map interface, they do not print correctly when exported to pdf
> from a print composer. I have tried re-projecting the vectors to 3857 as
> well, and no luck once I try to print to pdf...any help greatly
> appreciated...
>
> Thanks!
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[Qgis-user] Purge layers

[Carlos Cerdán]

Hi there

I want to purge layers in a large QGIS project, so, Is there some quick way
(maybe a plugin) to check which layers are used (and/or not used) in
designers?

Regards from Peru

Carlos Cerdan
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Re: [Qgis-user] layer query with modulo (source File Geodatabase)

[Carlos Cerdán]

Hi Torsten

That sentence is right, both for filter or for ruled based styling. Perhaps
"contour" is a text column...

Regards

Carlos Cerdán

2014-11-28 4:11 GMT-05:00 Torsten Lange :

>
> Hi,
>
> I've loaded a big set of contour lines with 5 m stepping from an ArcGIS
> File Geodatabase. From time to time I need to modulo out the 5 m lines in
> the viewer (showing only 10 m steps). Given a column "contour" this should
> work (shouldn't it?):
>
> "contour" % 10 = 0
>
> However, it returns 0 lines with both, double or integer type. The column
> contains just values of xx0 and xx5.
>
> Thanks for any hint!
>
>
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Re: [Qgis-user] Raster: replace a single value with another value

[Carlos Cerdán]

Hi Andreas:

It is solved: you have to reproject your TEMP layer. I've tried with
UTM-32N zone and raster calculator works fine.

Why raster calculator (and SAGA) doesn't work with your original CRS? Well,
I don't know, perhaps devs group have the answer.

It was a good challenge.

Carlos

2014-11-18 4:37 GMT-05:00 Andreas Neumann :

> Hi Carlos,
>
> Thank you for your help!
>
> I tried with
>
> (TEMP@1=249)*255 + (TEMP@1<249)*TEMP@1 + (TEMP@1>249)*TEMP@1
>
> My layer is called "temp". However, the resulting file contains all 0.
>
> I tried in both QGIS 2.4 and 2.6.
>
> Is there something wrong with the input file? It was generated from a PDF
> with ghostscript. Here is the metadata:
>
> -
>
> GDAL provider
> GTiff
> GeoTIFF
> Datensatzbeschreibung
> //gis/gis/mapserverdata/uep/release_2014_11/temp.tif
> TIFFTAG_DATETIME=2014:11:17 09:50:08
> TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
> TIFFTAG_SOFTWARE=GPL Ghostscript 9.10
> TIFFTAG_XRESOLUTION=600
> TIFFTAG_YRESOLUTION=600
> Kanal 1
> STATISTICS_MAXIMUM=255
> STATISTICS_MEAN=247.18714741724
> STATISTICS_MINIMUM=0
> STATISTICS_STDDEV=37.198102288306
> Dimensionen
> X: 71575 Y: 70867 Kanäle: 1
> Leerwert
> *Leerwert nicht gesetzt*
> Datentyp
> Byte - Acht Bit vorzeichenlose Ganzzahl
> Pyramidenübersichten
> Räumliches Bezugssystem des Layers
> +proj=somerc +lat_0=46.952406 +lon_0=7.4395833 +k_0=1
> +x_0=60 +y_0=20 +ellps=bessel +towgs84=674.4,15.1,405.3,0,0,0,0
> +units=m +no_defs
> Layerausdehnung (in urspünglicher Projektion des Layers)
> 0.,-70867. : 71575.,0.
> 
> Kanal
> Kanal 1
> Kanal Nr
> 1
> Keine Statistik
> Noch keine Statistik gesammelt
>
> 
>
> Thanks again if you have any idea what may be wrong with my file or the
> above listed raster calc statement.
>
> Andreas
>
>
>
> Am 2014-11-17 18:38, schrieb Carlos Cerdán:
>
>> Hi Andreas:
>>
>> I think QGIS raster calculator can make this job. Conditional syntax
>> is a little bit... different.  The sentence that can do it is:
>>
>> (TIFF=249)*255 + (TIFF<249)*TIFF + (TIFF>249)*TIFF
>>
>> Where TIFF is your raster layer. The trick is: if the sentence in
>> parentheses is true, it gets value 1, else zero; so we have to
>> multiply by 255 to replace the 249 values. Next we have to add the
>> other values.
>>
>> Good luck,
>>
>> Carlos Cerdán
>>
>> PD. Please let me know if i'm wrong with this suggestion
>>
>> 2014-11-17 12:02 GMT-05:00 Andreas Neumann :
>>
>>  Hi,
>>>
>>> I have a very simple task (at least I thought it is simple), but am
>>> not able to do it properly.
>>>
>>> I have a grayscale tiff value where I would like to replace the
>>> value of 249 with 255 - all other values should stay as they are.
>>>
>>> I tried with gdal "nearblack", but nothing changed - I started a
>>> separate email-thread about that at the gdal list.
>>>
>>> Then I tried with the QGIS raster calculator - but it does not
>>> support conditional syntax.
>>>
>>> I tried with Processing and GRASS - but it would stop at 8% - the
>>> file is quite big.
>>>
>>> Finally I came across SAGA "Reclassify with grid value". The
>>> dialogue is very complicated and hard to understand. After a while
>>> it would stop with an error message telling me that Saga may not be
>>> properly configured - but it says that it is properly installed.
>>> Quite confusing ...
>>>
>>> I am trying on Win7 64bit.
>>>
>>> If the file wouldn't be so big I would try this task in The Gimp -
>>> where it is very simple to replace one pixel values with another -
>>> using "Select by color" and "fill with a specific color".
>>>
>>> Any idea how I could achieve my task with GDAL, QGIS, GRASS or
>>> Saga?
>>>
>>> Thanks,
>>> Andreas
>>>
>>> ___
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>>>
>>
>>
>>
>> Links:
>> --
>> [1] http://lists.osgeo.org/mailman/listinfo/qgis-user
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Re: [Qgis-user] Raster: replace a single value with another value

[Carlos Cerdán]

Cross posting... Now we can test your file You're right, just 0 0 0 0
s...

2014-11-18 9:04 GMT-05:00 Carlos Cerdán :

> Hi Andreas:
>
> I've checked the expression and it's ok. I forgot to warn about the
> "Actual layer extension" button in raster calculator: When you have two or
> more raster layers, and these have different limits, we have to indicate
> what the limit of result is, so, if it's the case, in raster calculator,
> before perform your expression, select the TEMP layer and press this button
> to ensure that limit of resulting layer is right, else, you'll get a layer
> containing all cells 0.
>
> Or... start a new QGIS session, load just TEMP layer and use raster
> calculator. Limits don't be an issue.
>
> Regards
>
> Carlos
>
> 2014-11-18 4:37 GMT-05:00 Andreas Neumann :
>
> Hi Carlos,
>>
>> Thank you for your help!
>>
>> I tried with
>>
>> (TEMP@1=249)*255 + (TEMP@1<249)*TEMP@1 + (TEMP@1>249)*TEMP@1
>>
>> My layer is called "temp". However, the resulting file contains all 0.
>>
>> I tried in both QGIS 2.4 and 2.6.
>>
>> Is there something wrong with the input file? It was generated from a PDF
>> with ghostscript. Here is the metadata:
>>
>> -
>>
>> GDAL provider
>> GTiff
>> GeoTIFF
>> Datensatzbeschreibung
>> //gis/gis/mapserverdata/uep/release_2014_11/temp.tif
>> TIFFTAG_DATETIME=2014:11:17 09:50:08
>> TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
>> TIFFTAG_SOFTWARE=GPL Ghostscript 9.10
>> TIFFTAG_XRESOLUTION=600
>> TIFFTAG_YRESOLUTION=600
>> Kanal 1
>> STATISTICS_MAXIMUM=255
>> STATISTICS_MEAN=247.18714741724
>> STATISTICS_MINIMUM=0
>> STATISTICS_STDDEV=37.198102288306
>> Dimensionen
>> X: 71575 Y: 70867 Kanäle: 1
>> Leerwert
>> *Leerwert nicht gesetzt*
>> Datentyp
>> Byte - Acht Bit vorzeichenlose Ganzzahl
>> Pyramidenübersichten
>> Räumliches Bezugssystem des Layers
>> +proj=somerc +lat_0=46.952406 +lon_0=7.4395833 +k_0=1
>> +x_0=60 +y_0=20 +ellps=bessel +towgs84=674.4,15.1,405.3,0,0,0,0
>> +units=m +no_defs
>> Layerausdehnung (in urspünglicher Projektion des Layers)
>> 0.0000,-70867. : 71575.,0.
>> 
>> Kanal
>> Kanal 1
>> Kanal Nr
>> 1
>> Keine Statistik
>> Noch keine Statistik gesammelt
>>
>> 
>>
>> Thanks again if you have any idea what may be wrong with my file or the
>> above listed raster calc statement.
>>
>> Andreas
>>
>>
>>
>> Am 2014-11-17 18:38, schrieb Carlos Cerdán:
>>
>>> Hi Andreas:
>>>
>>> I think QGIS raster calculator can make this job. Conditional syntax
>>> is a little bit... different.  The sentence that can do it is:
>>>
>>> (TIFF=249)*255 + (TIFF<249)*TIFF + (TIFF>249)*TIFF
>>>
>>> Where TIFF is your raster layer. The trick is: if the sentence in
>>> parentheses is true, it gets value 1, else zero; so we have to
>>> multiply by 255 to replace the 249 values. Next we have to add the
>>> other values.
>>>
>>> Good luck,
>>>
>>> Carlos Cerdán
>>>
>>> PD. Please let me know if i'm wrong with this suggestion
>>>
>>> 2014-11-17 12:02 GMT-05:00 Andreas Neumann :
>>>
>>>  Hi,
>>>>
>>>> I have a very simple task (at least I thought it is simple), but am
>>>> not able to do it properly.
>>>>
>>>> I have a grayscale tiff value where I would like to replace the
>>>> value of 249 with 255 - all other values should stay as they are.
>>>>
>>>> I tried with gdal "nearblack", but nothing changed - I started a
>>>> separate email-thread about that at the gdal list.
>>>>
>>>> Then I tried with the QGIS raster calculator - but it does not
>>>> support conditional syntax.
>>>>
>>>> I tried with Processing and GRASS - but it would stop at 8% - the
>>>> file is quite big.
>>>>
>>>> Finally I came across SAGA "Reclassify with grid value". The
>>>> dialogue is very complicated and hard to understand. After a while
>>>> it would stop with an error message telling me that Saga may not be
>>>> properly configured - but it says that it is properly installed.
>>>> Quite confusing ...
>>>>
>>>> I am trying on Win7 64bit.
>

Re: [Qgis-user] Raster: replace a single value with another value

[Carlos Cerdán]

Hi Andreas:

I've checked the expression and it's ok. I forgot to warn about the "Actual
layer extension" button in raster calculator: When you have two or more
raster layers, and these have different limits, we have to indicate what
the limit of result is, so, if it's the case, in raster calculator, before
perform your expression, select the TEMP layer and press this button to
ensure that limit of resulting layer is right, else, you'll get a layer
containing all cells 0.

Or... start a new QGIS session, load just TEMP layer and use raster
calculator. Limits don't be an issue.

Regards

Carlos

2014-11-18 4:37 GMT-05:00 Andreas Neumann :

> Hi Carlos,
>
> Thank you for your help!
>
> I tried with
>
> (TEMP@1=249)*255 + (TEMP@1<249)*TEMP@1 + (TEMP@1>249)*TEMP@1
>
> My layer is called "temp". However, the resulting file contains all 0.
>
> I tried in both QGIS 2.4 and 2.6.
>
> Is there something wrong with the input file? It was generated from a PDF
> with ghostscript. Here is the metadata:
>
> -
>
> GDAL provider
> GTiff
> GeoTIFF
> Datensatzbeschreibung
> //gis/gis/mapserverdata/uep/release_2014_11/temp.tif
> TIFFTAG_DATETIME=2014:11:17 09:50:08
> TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
> TIFFTAG_SOFTWARE=GPL Ghostscript 9.10
> TIFFTAG_XRESOLUTION=600
> TIFFTAG_YRESOLUTION=600
> Kanal 1
> STATISTICS_MAXIMUM=255
> STATISTICS_MEAN=247.18714741724
> STATISTICS_MINIMUM=0
> STATISTICS_STDDEV=37.198102288306
> Dimensionen
> X: 71575 Y: 70867 Kanäle: 1
> Leerwert
> *Leerwert nicht gesetzt*
> Datentyp
> Byte - Acht Bit vorzeichenlose Ganzzahl
> Pyramidenübersichten
> Räumliches Bezugssystem des Layers
> +proj=somerc +lat_0=46.952406 +lon_0=7.4395833 +k_0=1
> +x_0=60 +y_0=20 +ellps=bessel +towgs84=674.4,15.1,405.3,0,0,0,0
> +units=m +no_defs
> Layerausdehnung (in urspünglicher Projektion des Layers)
> 0.,-70867. : 71575.,0.
> 
> Kanal
> Kanal 1
> Kanal Nr
> 1
> Keine Statistik
> Noch keine Statistik gesammelt
>
> 
>
> Thanks again if you have any idea what may be wrong with my file or the
> above listed raster calc statement.
>
> Andreas
>
>
>
> Am 2014-11-17 18:38, schrieb Carlos Cerdán:
>
>> Hi Andreas:
>>
>> I think QGIS raster calculator can make this job. Conditional syntax
>> is a little bit... different.  The sentence that can do it is:
>>
>> (TIFF=249)*255 + (TIFF<249)*TIFF + (TIFF>249)*TIFF
>>
>> Where TIFF is your raster layer. The trick is: if the sentence in
>> parentheses is true, it gets value 1, else zero; so we have to
>> multiply by 255 to replace the 249 values. Next we have to add the
>> other values.
>>
>> Good luck,
>>
>> Carlos Cerdán
>>
>> PD. Please let me know if i'm wrong with this suggestion
>>
>> 2014-11-17 12:02 GMT-05:00 Andreas Neumann :
>>
>>  Hi,
>>>
>>> I have a very simple task (at least I thought it is simple), but am
>>> not able to do it properly.
>>>
>>> I have a grayscale tiff value where I would like to replace the
>>> value of 249 with 255 - all other values should stay as they are.
>>>
>>> I tried with gdal "nearblack", but nothing changed - I started a
>>> separate email-thread about that at the gdal list.
>>>
>>> Then I tried with the QGIS raster calculator - but it does not
>>> support conditional syntax.
>>>
>>> I tried with Processing and GRASS - but it would stop at 8% - the
>>> file is quite big.
>>>
>>> Finally I came across SAGA "Reclassify with grid value". The
>>> dialogue is very complicated and hard to understand. After a while
>>> it would stop with an error message telling me that Saga may not be
>>> properly configured - but it says that it is properly installed.
>>> Quite confusing ...
>>>
>>> I am trying on Win7 64bit.
>>>
>>> If the file wouldn't be so big I would try this task in The Gimp -
>>> where it is very simple to replace one pixel values with another -
>>> using "Select by color" and "fill with a specific color".
>>>
>>> Any idea how I could achieve my task with GDAL, QGIS, GRASS or
>>> Saga?
>>>
>>> Thanks,
>>> Andreas
>>>
>>> ___
>>> Qgis-user mailing list
>>> Qgis-user@lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user [1]
>>>
>>
>>
>>
>> Links:
>> --
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>>
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Re: [Qgis-user] Raster: replace a single value with another value

[Carlos Cerdán]

Hi Andreas:

I think QGIS raster calculator can make this job. Conditional syntax is a
little bit... different.  The sentence that can do it is:

(TIFF=249)*255 + (TIFF<249)*TIFF + (TIFF>249)*TIFF

Where TIFF is your raster layer. The trick is: if the sentence in
parentheses is true, it gets value 1, else zero; so we have to multiply by
255 to replace the 249 values. Next we have to add the other values.

Good luck,

Carlos Cerdán

PD. Please let me know if i'm wrong with this suggestion



2014-11-17 12:02 GMT-05:00 Andreas Neumann :

> Hi,
>
> I have a very simple task (at least I thought it is simple), but am not
> able to do it properly.
>
> I have a grayscale tiff value where I would like to replace the value of
> 249 with 255 - all other values should stay as they are.
>
> I tried with gdal "nearblack", but nothing changed - I started a separate
> email-thread about that at the gdal list.
>
> Then I tried with the QGIS raster calculator - but it does not support
> conditional syntax.
>
> I tried with Processing and GRASS - but it would stop at 8% - the file is
> quite big.
>
> Finally I came across SAGA "Reclassify with grid value". The dialogue is
> very complicated and hard to understand. After a while it would stop with
> an error message telling me that Saga may not be properly configured - but
> it says that it is properly installed. Quite confusing ...
>
> I am trying on Win7 64bit.
>
> If the file wouldn't be so big I would try this task in The Gimp - where
> it is very simple to replace one pixel values with another - using "Select
> by color" and "fill with a specific color".
>
> Any idea how I could achieve my task with GDAL, QGIS, GRASS or Saga?
>
> Thanks,
> Andreas
>
>
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Re: [Qgis-user] averiguar el sentido/dirección de una línea

[Carlos Cerdán]

Hola Francisco

Creo que las propiedades de la capa te pueden volver a ayudar en esto,
haciendo que en el último vértice se inserte el signo ">" para simular así
una flecha que indique la dirección de la línea. Los pasos serían:

1. Abrir propiedades de la capa de líneas.
2. Doble click en la línea agregar el símbolo.
3. Click en "+" (añadir capa de símbolo)
4. En tipo de capa de símbolo seleccionar "línea de marcador" y en
"ubicación del marcador" seleccionar "sólo en el último vértice"
5. En el desglose de la línea de marcador seleccionar "marcador sencillo"
(con lo cual cambian las opciones de la ventana principal) y seleccionar el
símbolo ">".
6. Seleccionar las propiedades a gusto. Color, ancho de pluma.

Saludos

Carlos Cerdán

PD. Agrego tu mensaje a la lista de usuarios en Español.


El 11 de noviembre de 2014, 6:19, Corredera_Estudio de Ingeniería GEOCOBET
CARTOGRAFÍA Y SIG  escribió:

> ¿Tiene QGIS algún complemento que permita averiguar el sentido de una
> línea?
>
> Tengo una serie de líneas, y necesito averiguar cuál es su sentido para
> verificar si es o no correcto.
>
> Un usuario del foro (Diego Lawrie) me ayudó indicándome cómo cambiar el
> sentido de una línea (con el complemento digitizing tools), y he comprobado
> que, en efecto, con esta herramienta se puede cambiar el sentido de una
> línea. Pero mi duda ahora es otra: cómo conocer qué sentido tiene para
> saber si hay o no que cambiarlo.
>
> Sabe alguien si QGIS cuenta con algún complemento o herramieta que permita
> mostrar el sentido o la numeración de los vértices sin necesidad de generar
> una shape de nodos, sino de un modo más rápido y sencillo.
>
> Por ahora, he resuelto el problema utilizando el geoalgoritmo "Extract
> nodes", del panel Caja de Herramientas del QGIS>>>Vector Geometry Tools,
> generando un shape de puntos que muestra los nodos o vértices de la línea,
> y con él obtengo el orden, pues estos vértices se generan y numeran en el
> nuevo shape según sea el orden/sentido de la línea, pero resulta tedioso
> tener que generar una capa temporal cada vez que decida averiguar el
> sentido de cada línea.
>
> Quería saber si existe algo que de un modo más sencillo y rápido permita
> mostrar de alguna manera el sentido/dirección de una línea.
>
> Gracias y un saludo desde Lanzarote, España.
>
>
> *Francisco Corredera Quesada*
> *GEOCOBET CARTOGRAFIA Y SIG*
> *www.geocobet.com <http://www.geocobet.com>corred...@geocobet.com
>(+34) 928 80 87 42*
>
>
>
>
>
>
>
>
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> decarácter confidencial. Se dirige  exclusivamente al
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Re: [Qgis-user] low CPU on python plugin computation - an explanation ?

[Carlos Cerdán]

It's useful information, thank you Alain

2014-10-29 11:48 GMT-05:00 Alain Gauthier :

> Hello,
> I found a workaround to my problem : the computation I am performing is
> done on a layer open from a network file.
> So I copied the files on my local computer disk and the computation time
> became normal, with a normal CPU usage.
>
> In order to understand the problem, I had a look to questions on slow
> network access trouble with QGIS. I think my problem is related to that
> one : http://hub.qgis.org/issues/6448
>
> In fact if I try to perform a simple "spatial query" with Qgis onto a
> layer opened for a network file, the computation is very slow and does
> not use more than few percents of CPU. The same query done on a layer
> opened from a local disk file is normaly performed.
>
> I hope this could help anyone facing this performance problem.
>
> Thank you for your attention
> Alain Gauthier
>
>
>
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Re: [Qgis-user] Finding Points which do not overlay

[Carlos Cerdán]

Hi Henrik:

If you still don't solve your issue, perhaps you can try this:

1. If you don't have it, Calculate X and Y coords. for your two layers

2. Make a table union, in layer properties

3. Create two new fields for calculate difference of coordinates (Xi - Xj)
and (Yi - Yj)

4. Calculate the absolute distance between points in a new field, with the
two previous.

5. This last field is your criterion about absolute difference between
points.

Good luck

Carlos Cerdán




2014-09-19 9:35 GMT-05:00 henrik_f :

> Hey,
> So I will get right to the problem I have.
> I have two different Layers with the same content from different times. Now
> I want to know which points changed their location and which have been
> added
> or deleted so I just wanted to find the points which do not overlay by
> using
> Vector -> Geoprocessing Tools -> Difference
> (I wasnt sure if the one I was looking for was Symetrical Differnce so I
> tried both)
> I then realzied that not a single point was overlaying due to the fact that
> the points that should have the same location were all seperated by about 3
> meters.
>
> Pictures: In the first picture you see a red point. Out of these kind of
> points I want to make a new layer. The second picture is a zoomed in
> version
> of the area highlighted in the first one.
>
> <http://osgeo-org.1560.x6.nabble.com/file/n5162929/Pic1.png>
> <http://osgeo-org.1560.x6.nabble.com/file/n5162929/Pic2.png>
>
>
> Here is my question: How do I find the points which are not in distance of
> 3m to each other?
> I made some attempts with buffers and the difference tool again but non
> worked.
> Does anyone have an idea?
>
> Greetings
> Henrik
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Finding-Points-which-do-not-overlay-tp5162929.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] Mask feature by polygons

[Carlos Cerdán]

Hi Antonio

Perhaps this link

helps. You can combine markers in style for your points layer.

Good luck




2014-09-18 15:59 GMT-05:00 AntonioLocandro :

> Is it possible to mask a feature (hide) by using another layer? I dont want
> to break the lines just be able to hide them using a buffer around the
> point
> either from an spatial view or a polygon layer
>
> 
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Mask-feature-by-polygons-tp5162761.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] How to import a Google map

[Carlos Cerdán]

In Google Earth select the layer (place), right click and "save place as..."

Select type file KML. Default is KMZ.

Open in QGIS as a vector layer (select filter to "KML")





2014-09-10 8:56 GMT-05:00 labiancamaril...@libero.it <
labiancamaril...@libero.it>:

> Hello,
> today I saw a tutorial where the author sayd that it's better to save the
> map as kml file, but when I try to save the map (edited by my colleague in
> google maps) I don't see any button o comand.
>
>  Messaggio originale
> Da: sig.up...@gmail.com
> Data: 10/09/2014 14.40
> A: "labiancamaril...@libero.it"
> Cc: "qgis-user@lists.osgeo.org"
> Ogg: Re: [Qgis-user] How to import a Google map
>
>
> Hi Marilena:
>
> In Google Earth, you must save your "place" as kml file.
>
> In QGIS you can open directly this KML. If you want edit it, then save
> this KML file as a new SHP file.
>
> Good luck
>
> Carlos Cerdán
>
> 2014-09-10 5:30 GMT-05:00 labiancamaril...@libero.it <
> labiancamaril...@libero.it>:
>
>> Hi,
>> my colleague has done a map indicating some points
>> using google maps.
>> I would like to import into Qgis.
>> How can I do? Is there a plugin?
>> thanks
>> Marilena
>>
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Re: [Qgis-user] How to import a Google map

[Carlos Cerdán]

Hi Marilena:

In Google Earth, you must save your "place" as kml file.

In QGIS you can open directly this KML. If you want edit it, then save this
KML file as a new SHP file.

Good luck

Carlos Cerdán

2014-09-10 5:30 GMT-05:00 labiancamaril...@libero.it <
labiancamaril...@libero.it>:

> Hi,
> my colleague has done a map indicating some points
> using google maps.
> I would like to import into Qgis.
> How can I do? Is there a plugin?
> thanks
> Marilena
>
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Re: [Qgis-user] Descriptionfield and Namefield in KML export

[Carlos Cerdán]

Hi José

No reactions yet... but thank you very much for share your feedback. I'll
take note of this to mi next deal with KMLs.

Saludos

Carlos Cerdán


2014-08-28 4:38 GMT-05:00 José G Moya Y. :

> Hi!J
>
>
> On QGIS 2.4, I have some kind of trouble exporting to KML from SHP files
> when the "name" field is not called "name".
> If I specify the "Name" field in the SaveAs->KML file ->Datasource options
> dialog, QGIS ignores that option.
> A workaround is using the Field calculator to generate a new field called
> "Name". Then, QGIS uses the Name field.
>
> This is the result of my experiments:
>
> 1) Export kml from a SHP file without "NAME" field, specifying field XXX
> as Namefield
> => Resulting KML file has no name. Field XXX is exported as Extended data
> with name XXX.
>
> 2) Export kml from a SHP file with "NAME" field, Specifying field XXX as
> Namefield
>  ==>Resulting KML file has namefield "NAME", "XXX" field is NOT exported.
>
> 3) Export kml from a SHP file with "NAME" field, Specifying "NAME" as name
> field
> ==>Everything is ok.
>
> Please note the same applies to Description field option.
>
> Also, I use to need calculated descriptions (I.E. to generate a html
> description with a table grouping many fields), but I can't use the field
> calculator inside the "description field" option, so I have to make a copy
> of the SHP file with the custom Description field, using the field
> calculator before exporting to kml.
>
> (Another question: what does mean "export simbology?" I find the results
> are the same with or without clicking that option. I would like an option
> to save my custom categorized icons ...)
>
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Re: [Qgis-user] geometry attribute units

[Carlos Cerdán]

>>
> The perimeter is calculated in units of the layer. If that has degrees
> (like EPSG:4326), the perimeter result is surely nonsense.
> You have to reproject your datasource to a projected CRS that uses metres,
> feet or miles to get a useful result.
>
>
>
Just a little correction: geometry is not calculated in units of the layer,
but in units of the project. Be sure that "on the fly" reprojection is
disabled. If doesn't, it causes a wrong result (an issue of QGIS that is
not solved yet).

Good luck

Carlos Cerdán
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