Re: [Qgis-user] Atlas by year

2019-03-25 Thread Alexandre Neto 
You need to create a layer, with a column called year, with each year in a
row. The layer does not need to have a geometry. Use that layer as the
coverage layer for atlas.

For the layer you want to filter by year, create a rule-based symbology,
and use the following rule/expression:

attribute(@atlasfeature, 'yea
r') = "year"

This compares the current atlas feature field year, to the layer year
column, and renders the features only if the years match.

Hope it helps.

Alexandre Neto

A seg, 25/03/2019, 13:50, Marco Antônio Ferreira Pedrosa <
marcomot...@gmail.com> escreveu:

> Hi all,
>
> Sorry if s a silly question!
>
> How to generate an atlas by a value in the attibute table? (i.e: Year).
> QGIS Atlas would generate one map for each attribute value but not group by
> year.
>
> For each year, I want to show the features with a categorized symbology
> (same for all years, but I want to show just the features from that year).
>
> tnks in advance!
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Re: [Qgis-user] F29 + dani-qgis repo update errors

2019-03-25 Thread Daniele Viganò 
Dear Max,

thanks for reporting the issue.
The bug has been already fixed here
https://github.com/qgis/QGIS/pull/9621; a new build is available on COPR
(3.6.1-2).

The issue is however not preventing the installation to work properly.

Cheers,
Daniele

---
Daniele Viganò
http://daniele.vigano.me

On mobile, please excuse my brevity.

On Mon, Mar 25, 2019, 23:02 Max Pyziur  wrote:

>
> Greetings,
>
> When running a Fedora 29 software update, and using the dani-qgis repos,
> the following errors occurred:
>
>Running scriptlet: qgis-grass-3.6.1-1.fc29.x86_64  5/8
>Cleanup  : qgis-server-3.6.1-1.fc29.x86_64   6/8
>Cleanup  : python3-qgis-3.6.1-1.fc29.x86_64  7/8
>Running scriptlet: python3-qgis-3.6.1-1.fc29.x86_64   7/8
> /sbin/ldconfig: relative path `1' used to build cache warning:
> %postun(python3-qgis-3.6.1-1.fc29.x86_64) scriptlet failed, exit status 1
>
> Error in POSTUN scriptlet in rpm package python3-qgis
>Cleanup  : qgis-3.6.1-1.fc29.x86_64
>
>
>
> fyi,
>
> Max Pyziur
> p...@brama.com
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[Qgis-user] F29 + dani-qgis repo update errors

2019-03-25 Thread Max Pyziur 


Greetings,

When running a Fedora 29 software update, and using the dani-qgis repos, 
the following errors occurred:


  Running scriptlet: qgis-grass-3.6.1-1.fc29.x86_64  5/8
  Cleanup  : qgis-server-3.6.1-1.fc29.x86_64   6/8
  Cleanup  : python3-qgis-3.6.1-1.fc29.x86_64  7/8
  Running scriptlet: python3-qgis-3.6.1-1.fc29.x86_64   7/8
/sbin/ldconfig: relative path `1' used to build cache warning: 
%postun(python3-qgis-3.6.1-1.fc29.x86_64) scriptlet failed, exit status 1


Error in POSTUN scriptlet in rpm package python3-qgis
  Cleanup  : qgis-3.6.1-1.fc29.x86_64



fyi,

Max Pyziur
p...@brama.com
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[QGIS-it-user] Da point a multipoint

2019-03-25 Thread Studio Multiservice s.s. 
Ciao

predisponi il geoprocesso "dissolvi" in cui il campo indice per la
dissolvenza è quello che ti interessa per fare il gruppo multipunto.

Il nuovo shp sarà generato come da te richiesto.

Alberto
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[Qgis-user] Atlas by year

2019-03-25 Thread Marco Antônio Ferreira Pedrosa 
Hi all,

Sorry if s a silly question!

How to generate an atlas by a value in the attibute table? (i.e: Year).
QGIS Atlas would generate one map for each attribute value but not group by
year.

For each year, I want to show the features with a categorized symbology
(same for all years, but I want to show just the features from that year).

tnks in advance!
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Re: [Qgis-user] how to add a jpg figure near points

2019-03-25 Thread Stefan Giese (WhereGroup) 
see this image: 
https://drive.google.com/file/d/1SnYigYmyG8458qbtGanWg5-rrNsv9o_T/view?usp=sharing


---
Mit freundlichen Grüßen
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Projektleiter/Consultant
---
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Am 2019-03-25 14:18, schrieb Azzurra Lentini:

Dear Lene Fischer thank you for your answer but I dont find it.
So from the layer panel shape file points (click right): properties
and style? but there I dont find "raster image maker"..

Azzurra

Lene Fischer  a écrit :

Under Symbology - you can choose raster image marker. I use it for  
aerial images next to points.

Regards


Lene Fischer
Associate Professor

University of Copenhagen
Department of Geoscience and Natural Resource Management Forest and  
Landscape College Nødebovej 77a

3480 Fredensborg
Denmark

-Oprindelig meddelelse-
Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne  af 
Azzurra Lentini

Sendt: 24. marts 2019 20:44
Til: qgis-user@lists.osgeo.org
Emne: [Qgis-user] how to add a jpg figure near points

Hi to all,
I would like to add in my project some figures near my points.
I explain better,I have a shapefile of points  that represent some
springs and I would like to associate for every point a figure (jpg
extension for example) that I did with another software (is a  a
diagram used in hydrogeochemistry to show the water composition): so I
would like to see near every point a figure (I think it would be the
same if I wanted to associate a picture).

Thanks to all

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Re: [Qgis-user] how to add a jpg figure near points

2019-03-25 Thread Azzurra Lentini 

Dear Lene Fischer thank you for your answer but I dont find it.
So from the layer panel shape file points (click right): properties  
and style? but there I dont find "raster image maker"..


Azzurra

Lene Fischer  a écrit :

Under Symbology - you can choose raster image marker. I use it for  
aerial images next to points.

Regards


Lene Fischer
Associate Professor

University of Copenhagen
Department of Geoscience and Natural Resource Management Forest and  
Landscape College Nødebovej 77a

3480 Fredensborg
Denmark

-Oprindelig meddelelse-
Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne  
af Azzurra Lentini

Sendt: 24. marts 2019 20:44
Til: qgis-user@lists.osgeo.org
Emne: [Qgis-user] how to add a jpg figure near points

Hi to all,
I would like to add in my project some figures near my points.
I explain better,I have a shapefile of points  that represent some
springs and I would like to associate for every point a figure (jpg
extension for example) that I did with another software (is a  a
diagram used in hydrogeochemistry to show the water composition): so I
would like to see near every point a figure (I think it would be the
same if I wanted to associate a picture).

Thanks to all

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Re: [QGIS-it-user] Da point a multipoint

2019-03-25 Thread Sergio Gollino 
Ciao Marco,
a memoria lo shape file non ha una vincolo per le multigeometrie, cioè se
tu cominci a creare multipunti all'interno di uno shape di punti lui te lo
fa fare senza darti errore..(non che sia una cosa buona a parer mio).
Pertanto non capisco a cosa ti serva fare la conversione.
Al di la di questo tu devi forzare il multi punto perchè in quello shape
non ci sono multi-punti ma punti. In pratica tu crei dei multi-punti
costituiti da un punto solo (cosa che non ha senso di per se e pertanto è
una forzatura).
Ti darà sempre quel tipo di errore a meno che il tuo strato non sia
costituito intermente da multi geometrie.
ciao
Sergio




Il giorno ven 22 mar 2019 alle ore 22:48 Marco Spaziani <
spaziani.ma...@gmail.com> ha scritto:

> Ho necessità di trasformare uno shapefile "point" in uno shapefile
> "multipoint".
> In QGIS 3.4 LTR usando: *Tasto dx del mouse --> Esporta --> Salva
> elementi come*, si apre il pannello "Salva il pannello come...".
> Da qui in "Opzioni del layer" seleziono, nel menù a tendina denominato
> *SHPT*, la voce "MULTIPOINT".
> A questo punto sembrerebbe di aver impostato tutto il necessario per
> trasformare lo shapefile "point" in uno shapefile "multipoint" ma invece,
> cliccando su OK, il programma mi da questo errore:
>
> *Errore nella creazione dell'elemento (errore OGR: Attempt to write
> non-multipoint (POINT) geometry to multipoint shapefile.)*
>
> Ora, facendo dei tentativi casuali, ho visto che se, oltre a ripetere
> tutti i passaggi su elencati, in "Tipo di geometria" seleziono "Point" e,
> quindi, metto il segno di spunta alla voce "Forza multi-tipo", questa
> volta, se clicco su OK, il programma mi genera regolarmente lo shapefile
> multipoint.
>
> La domanda è: perchè devo mettere il segno di spunta a "Forza
> multi-tipo"?, ..."multi-tipo" forse sta per
> "multipoint/multipolygon/multiline"?
>
> ...e perchè dovrei "Forzare" il processo visto che nel menù a tendina
> denominato *SHPT*, gli ho già detto che voglio un "MULTIPOINT"?
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-- 
Sergio Gollino

Questo messaggio, comprensivo di eventuali allegati, è ad uso esclusivo del
destinatario e potrebbe contenere  informazioni riservate; se è stato
recapitato per errore ci scusiamo per l'accaduto e Vi invitiamo
cortesemente a darcene notizia provvedendo alla sua distruzione.
Vi ricordiamo che la diffusione, l'utilizzo e/o la conservazione dei dati
ricevuti per errore costituiscono violazione alle disposizioni del D.Lgs.
n. 196/2003 "Codice in materia di protezione dei dati personali".
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[QGIS-it-user] "curvosita delle strade

2019-03-25 Thread Giuseppe Puddu 
  
Ciao a tutti. 
Ho bisogno di un consiglio. 
Vorrei misurare la
"curvosità di tratti di strada (tratti da 250 metri). 
Esiste un qualche
plugin o metodo che avete usato? 
L'idea è di capire se un dato tratto
stradale predisponga alla velocità, 
tenendo conto dell'entrata del
tratto precedente e uscita del tratto successivo! 
qualche dritta? Un
confronto? 
grazie in anticipo 
giuseppe puddu  


Con OpenStar hai Giga, SMS e i minuti che vuoi da 4,99€ al mese, per sempre. 
Cambi gratis quando e come vuoi e in più hai 6 mesi di INFINTY! 
http://tisca.li/myopen

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Re: [Qgis-user] raster smoothing tool?

2019-03-25 Thread Paolo Cavallini 
Hi Nicolas, Yann.
Please remember, if the issue is confirmed, to open a ticket on
https://issues.qgis.org/
Thanks.

On 23/03/19 06:52, Nicolas Cadieux wrote:
> Salut Yann,
> 
> In QGIS, try renaming the output file instead of using the default
> temporary file.  I have had similar problems in the past but I am not
> sure if this is the same thing.  You can try saving as a tif or as
> .sdat.  I had funny results in the past with SAGA when using tif as
> output therefore I had more success saving in SAGA .sdat and then
> exporting that result to a tif afterwards.
> 
> Nice to know you got it working.  SAGA is nice and has rich algorithm
> but has the nasty habit of loading massive amounts of data to memory.
>  This makes it faster if you can take the memory hit.
> 
> Au plaisir!
> Nicolas
> 
> 
> Le 22 mars 2019 à 22:45, Yann Troutet  > a écrit :
> 
>> Merci Nicolas,
>>
>> I had tried the Vigra Smoothing tool from SAGA, but this simply raises
>> the following error message:
>>
>> The following layers were not correctly
>> generated.C:/Users/ytroutet/AppData/Local/Temp/processing_f62d6fcc634e4d53945b3b999d33eb65/fabcc06c819f4f7684ec3ba0a75d6a0d/OUTPUT.sdatYou
>> can check the 'Log Messages Panel' in QGIS main window to find more
>> information about the execution of the algorithm.
>>
>> I'm using QGIS 3.4.4. Madeira and have mostly been attempting to run
>> r.resamp.filter kernel filters. This process just outputs a new raster
>> layer with the same pixels values, even though I've tried different
>> 'radius' values.
>>
>> I've just looked at the SAGA simple filter, and this worked just fine.
>>
>> Une fois de plus merci de m'avoir suggéré les options du côté de SAGA.
>>
>> yann
>> >>> Nicolas Cadieux > >>> >
>> 3/22/2019 6:26 PM >>>
>> Hi,
>>
>> That is weird.  There are low pass filter in processing.  Try one from
>> Saga.  Then open Saga and try again.  Compare both.  If you get the
>> same results, you will know the problem is from Saga or the raster but
>> not from QGIS.  Then write back with the exact version of QGIS you are
>> using, on what platform (OS, Linux, Windows...) and what algorithm you
>> are trying. This should help us figure things out.
>>
>> Nicolas
>>
>> Le 22 mars 2019 à 20:27, Yann Troutet > > a écrit :
>>
>>> Hello,
>>>
>>> Are there any raster smoothing (low-pass filtering) tools that will
>>> work in QGIS 3.  Every option that I try simply outputs a raster that
>>> has the exact same values as the original.
>>>
>>>
>>> -- 
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[Qgis-user] grid creation after points analysis

2019-03-25 Thread Eugenio Trumpy 
Hi all,

I want to know if it is possible to create a model which has to to do the 
following:

  1.  import a points layer (A)
  2.  analyse the A with a cell 100x100 km moving it with a 25 km step
  3.  on each step (25km) a statistical analysis of the points falling in the 
100x100 km cell has to be performed --> the statistical analysis has to do: a 
histogram in frequency classes (so a point attribute has to be divided in 
classes and for each class the points have to be counted) the output is the 
value of the class where the 90% of the points fall.
  4.  this analysis has to be replicated for each 25km step on X and Y
  5.  the result should be a matrix 25km spaced on x and y where the cell value 
is the point attribute value of the 90%

Is it possible with the available function in the QGIS toolbox? or it is 
necessary the develop a custom function/plugin?

Thanks for any hints you can give me...

Eugenio
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[Qgis-user] WG: Aggregation of adjacent polygons of the same type

2019-03-25 Thread Sven Böhme - empirica 


-Ursprüngliche Nachricht-
Von: Sven Böhme - empirica 
Gesendet: Montag, 25. März 2019 10:25
An: 'Stefan Giese (WhereGroup)' 
Betreff: AW: [Qgis-user] Aggregation of adjacent polygons of the same type

Hi Stefan,

maybe this helps to clarify the problem...

Thanks a lot
Sven



-Ursprüngliche Nachricht-
Von: Stefan Giese (WhereGroup) 
Gesendet: Montag, 25. März 2019 10:11
An: Sven Böhme - empirica 
Cc: qgis-user@lists.osgeo.org
Betreff: Re: [Qgis-user] Aggregation of adjacent polygons of the same type

Hi Sven,
can you specify your question: what is unclear and where exactly do you need 
support for?

best regards
stefan
---
Mit freundlichen Grüßen
Stefan Giese

Projektleiter/Consultant
---
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Am 2019-03-25 10:04, schrieb Sven Böhme - empirica:
> Hi!
> 
> I'm trying to aggregate neighboring polygons based on additional 
> conditions. These are:
> 
> - the polygons must be adjacent
> 
> - the polygons must be of the same type (simple value from attribute)
> 
> - the polygons should only be combined if the values of an attribute x 
> are below a certain value AND
> 
> - the polygons shall be merged with other polygons until this value is 
> reached
> 
> The polygons are grids. Aggregation should not necessarily lead to new 
> squares (as in the Quadtree-method).
> 
> I use PostGIS to store the data and QGIS for visualization and further 
> processing. For performance reasons I suspect that a 
> database-supported procession makes sense, but if QGIS (GDAL,GRASS
> etc.) offers a function, I would like to try it out.
> 
> I would be happy about support
> 
> Best regards
> 
> Sven
> 
> 
> 
> empirica ag
> 
> Sven Böhme
> 
> Kaiserstraße 29
> 
> 53113 Bonn
> Fon +49 (0)228 91489-90
> 
> Fax +49 (0)3222 95 66 169
> 
> www.empirica-institut.de [1]
> 
> empirica ag - Zweigniederlassung Bonn - HRB 87951 Amtsgericht 
> Charlottenburg
> 
> Vorstand: Dr. Marie-Therese Krings-Heckemeier (Vorsitzende),
> 
> Ludger Baba, Dr. Reiner Braun (stellv. Vors.), Meike Heckenroth, Prof.
> Dr. Harald Simons
> 
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Re: [Qgis-user] Aggregation of adjacent polygons of the same type

2019-03-25 Thread Stefan Giese (WhereGroup) 

Hi Sven,
can you specify your question: what is unclear and where exactly do you 
need support for?


best regards
stefan
---
Mit freundlichen Grüßen
Stefan Giese

Projektleiter/Consultant
---
Aufwind durch Wissen!
Qualifizierte Open-Source-Schulungen
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---
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79100 Freiburg
Germany

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Fax: +49 (0)761 / 519 102 - 11

stefan.gi...@wheregroup.com
www.wheregroup.com
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WhereGroup Verwaltungs GmbH
vertreten durch:
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Am 2019-03-25 10:04, schrieb Sven Böhme - empirica:

Hi!

I'm trying to aggregate neighboring polygons based on additional
conditions. These are:

- the polygons must be adjacent

- the polygons must be of the same type (simple value from attribute)

- the polygons should only be combined if the values of an attribute x
are below a certain value AND

- the polygons shall be merged with other polygons until this value is
reached

The polygons are grids. Aggregation should not necessarily lead to new
squares (as in the Quadtree-method).

I use PostGIS to store the data and QGIS for visualization and further
processing. For performance reasons I suspect that a
database-supported procession makes sense, but if QGIS (GDAL,GRASS
etc.) offers a function, I would like to try it out.

I would be happy about support

Best regards

Sven



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[Qgis-user] Aggregation of adjacent polygons of the same type

2019-03-25 Thread Sven Böhme - empirica 
Hi!

I'm trying to aggregate neighboring polygons based on additional conditions. 
These are:

- the polygons must be adjacent
- the polygons must be of the same type (simple value from attribute)
- the polygons should only be combined if the values of an attribute x are 
below a certain value AND
- the polygons shall be merged with other polygons until this value is reached

The polygons are grids. Aggregation should not necessarily lead to new squares 
(as in the Quadtree-method).

I use PostGIS to store the data and QGIS for visualization and further 
processing. For performance reasons I suspect that a database-supported 
procession makes sense, but if QGIS (GDAL,GRASS etc.) offers a function, I 
would like to try it out.

I would be happy about support

Best regards
Sven



empirica ag
Sven Böhme
Kaiserstraße 29
53113 Bonn
Fon +49 (0)228 91489-90
Fax +49 (0)3222 95 66 169
www.empirica-institut.de

empirica ag - Zweigniederlassung Bonn - HRB 87951 Amtsgericht Charlottenburg
Vorstand: Dr. Marie-Therese Krings-Heckemeier (Vorsitzende),
Ludger Baba, Dr. Reiner Braun (stellv. Vors.), Meike Heckenroth, Prof. Dr. 
Harald Simons
Aufsichtsratsvorsitzender: Klaus Arndt

Kostenloser Newsletter von empirica. Jetzt anmelden:
https://www.empirica-institut.de/newsletter-anmelden/
Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. 
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information. If you are not the intended recipient (or have received this 
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Any unauthorized copying, disclosure or distribution of the material in this 
e-mail is strictly forbidden.

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Re: [Qgis-user] QField: recommendations for aerial basemap preparation?

2019-03-25 Thread Bernd Vogelgesang 

Hi Wouter,

unfortuantely, the area is located in Germany, well-known for its
horrible mobile networks coverages. There are some spots where you even
can't make SOS-calls.

So for the years to come WMS, is a bad to no option. But I'll give it a try.

Cheers,

Bernd

Am 25.03.19 um 09:44 schrieb Wouter Impens:

Hi Bernd,

It's possible to load a WMS layer in your project for Q-field, maybe
that's a solution?
But then of course you need an internet connection all the time...

Greetings
Wouter

Op zo 24 mrt. 2019 om 21:37 schreef Bernd Vogelgesang
mailto:bernd.vogelges...@gmx.de>>:

Hi,

I need an aerial basemap for my QField-project to be able to locate
positions. As QField has not the ability to navigate to a point or
indicate the direction of movement, provided only with a topographic
basemap, I'm stumbling through the forest and have a hard time finding
the positions.

The project area is huge, around 400 square kilometers! I have a Mrsid
file of the area of 1.6 GB with 20 centimeter resolution,
transformed with gdal_translate to tiff is 42.5 GB,
compressed with gdal_transform with jped-compression 50% 968 MB,
resampled to 40cm resolution and 50% jpeg has 295 MB

I used the QField sync plugin to generate a baselayer in gpgk-format
from this ,which has 540 MB with 40 cm resolution.

Unfortunately, on the tablet, the baselayer is loading so slow,
that it
is impossible to work with it. Each redraw takes around 10 seconds in
the small scale, rising to infinity in higher scales.

I wonder if there are other approaches recommendable, for example
splitting the image into separate layers for bigger regions, which I
could then turn on and off, or if I should prepare the image apart
from
using the plugins converter to gpkg.

Due to the enourmous amount of time needed to process the image on the
PC, a trial-and-error approach seems not to be feasable, so I ask
you if
someone can recommend an approach for such a huge beast.


Thanx in advance,

Bernd

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Re: [Qgis-user] QField: recommendations for aerial basemap preparation?

2019-03-25 Thread Wouter Impens 
Hi Bernd,

It's possible to load a WMS layer in your project for Q-field, maybe that's
a solution?
But then of course you need an internet connection all the time...

Greetings
Wouter

Op zo 24 mrt. 2019 om 21:37 schreef Bernd Vogelgesang <
bernd.vogelges...@gmx.de>:

> Hi,
>
> I need an aerial basemap for my QField-project to be able to locate
> positions. As QField has not the ability to navigate to a point or
> indicate the direction of movement, provided only with a topographic
> basemap, I'm stumbling through the forest and have a hard time finding
> the positions.
>
> The project area is huge, around 400 square kilometers! I have a Mrsid
> file of the area of 1.6 GB with 20 centimeter resolution,
> transformed with gdal_translate to tiff is 42.5 GB,
> compressed with gdal_transform with jped-compression 50% 968 MB,
> resampled to 40cm resolution and 50% jpeg has 295 MB
>
> I used the QField sync plugin to generate a baselayer in gpgk-format
> from this ,which has 540 MB with 40 cm resolution.
>
> Unfortunately, on the tablet, the baselayer is loading so slow, that it
> is impossible to work with it. Each redraw takes around 10 seconds in
> the small scale, rising to infinity in higher scales.
>
> I wonder if there are other approaches recommendable, for example
> splitting the image into separate layers for bigger regions, which I
> could then turn on and off, or if I should prepare the image apart from
> using the plugins converter to gpkg.
>
> Due to the enourmous amount of time needed to process the image on the
> PC, a trial-and-error approach seems not to be feasable, so I ask you if
> someone can recommend an approach for such a huge beast.
>
>
> Thanx in advance,
>
> Bernd
>
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Re: [QGIS-it-user] Installazione QGIS Server su Ubuntu 16 xenial

2019-03-25 Thread Matteo Nastasi 
Le dipendenze me le ha risolte tutte aggiungendo il repository unstable 
di ubuntugis:

con: sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
e poi: apt-get update

Se questa sia la soluzione corretta non lo so; ...-testing va bene se si 
vuole installare solo qgis-server ma per python-qgis 'unstable' diventa 
l'unica opzione.


Saluti, Matteo.


On 21/03/19 10:50, Federico Gianoli wrote:

Carissimi,
sto riscontrando diversi problemi ad installare QGIS Server 3.4 su un 
server con ubuntu 16 xenial.


Ho aggiunto i seguenti repository a /etc/apt/sources.list

deb http://qgis.org/ubuntugis-ltr xenial main
deb-src http://qgis.org/ubuntugis-ltr xenial main

Con questi aggiunti, col comando apt-cache policy qgis-server mi 
individua correttamente la versione 3.4.5+24xenial-ubuntugis

ma quando gli dico di installare mi lascia questi errori

# apt-get -y install qgis-server python-qgis

Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python-qgis : Depends: python-qgis-common (= 
1:3.4.5+24xenial-ubuntugis) but it is not going to be installed
               Depends: libqgispython3.4.5 but it is not going to be 
installed
               Depends: libqgis-analysis3.4.5 but it is not going to 
be installed
               Depends: libqgis-core3.4.5 but it is not going to be 
installed
               Depends: libqgis-gui3.4.5 but it is not going to be 
installed
               Depends: libqgis-server3.4.5 but it is not going to be 
installed
 qgis-server : Depends: qgis-providers (= 1:3.4.5+24xenial-ubuntugis) 
but it is not going to be installed
               Depends: libqgis-core3.4.5 but it is not going to be 
installed
               Depends: libqgis-server3.4.5 but it is not going to be 
installed

E: Unable to correct problems, you have held broken packages.


Ho provato ad installare manualmente ma non le trova, gli stessi 
errori li ho anche se provo ad installare qgis.

Qualcuno ha sperimentato gli stessi errori?

Ho fatto la stessa installazione anche su un server ubuntu 18 bionic 
ed è filata liscissima, purtoppo non posso fare l'upgrade di ubuntu 16.


Grazie mille

Federico



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Re: [Qgis-user] QField: recommendations for aerial basemap preparation?

2019-03-25 Thread Matthias Kuhn 
Hi,

There is a gis stackexchange question open regarding this which has some
good inputs to consider.

https://gis.stackexchange.com/questions/309379/choosing-raster-format-for-qfield

There is also some information in the QField documentation regarding
this topic (although that could benefit from some improvements from your
findings, there's an edit on github link at the bottom of the page ;) )

https://www.qfield.org/docs/project-management/dataformat.html#raster-data

Best regards

Matthias

On 3/24/19 9:37 PM, Bernd Vogelgesang wrote:
> Hi,
>
> I need an aerial basemap for my QField-project to be able to locate
> positions. As QField has not the ability to navigate to a point or
> indicate the direction of movement, provided only with a topographic
> basemap, I'm stumbling through the forest and have a hard time finding
> the positions.
>
> The project area is huge, around 400 square kilometers! I have a Mrsid
> file of the area of 1.6 GB with 20 centimeter resolution,
> transformed with gdal_translate to tiff is 42.5 GB,
> compressed with gdal_transform with jped-compression 50% 968 MB,
> resampled to 40cm resolution and 50% jpeg has 295 MB
>
> I used the QField sync plugin to generate a baselayer in gpgk-format
> from this ,which has 540 MB with 40 cm resolution.
>
> Unfortunately, on the tablet, the baselayer is loading so slow, that it
> is impossible to work with it. Each redraw takes around 10 seconds in
> the small scale, rising to infinity in higher scales.
>
> I wonder if there are other approaches recommendable, for example
> splitting the image into separate layers for bigger regions, which I
> could then turn on and off, or if I should prepare the image apart from
> using the plugins converter to gpkg.
>
> Due to the enourmous amount of time needed to process the image on the
> PC, a trial-and-error approach seems not to be feasable, so I ask you if
> someone can recommend an approach for such a huge beast.
>
>
> Thanx in advance,
>
> Bernd
>
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Re: [Qgis-user] how to add a jpg figure near points

2019-03-25 Thread Lene Fischer 
Under Symbology - you can choose raster image marker. I use it for aerial 
images next to points.
Regards


Lene Fischer
Associate Professor

University of Copenhagen
Department of Geoscience and Natural Resource Management Forest and Landscape 
College Nødebovej 77a
3480 Fredensborg
Denmark

-Oprindelig meddelelse-
Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Azzurra 
Lentini
Sendt: 24. marts 2019 20:44
Til: qgis-user@lists.osgeo.org
Emne: [Qgis-user] how to add a jpg figure near points

Hi to all,
I would like to add in my project some figures near my points.
I explain better,I have a shapefile of points  that represent some  
springs and I would like to associate for every point a figure (jpg  
extension for example) that I did with another software (is a  a  
diagram used in hydrogeochemistry to show the water composition): so I  
would like to see near every point a figure (I think it would be the  
same if I wanted to associate a picture).

Thanks to all

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