Re: [Qgis-user] Issue with georeferencing plug-in

[Nicolas Cadieux]

Hi,

Make sure your project projection is in the same projection as the OSM layer. 
Do not use reproject on the fly for now.  If the new layer is created under the 
osm layer in the layer panel, you need to place it above the OSM layer as both 
are rasters. Later you can play with transparency or rendering on the raster 
layer properties.   You can also hide the OSM layer.  

In order to figure out if you have a projection problem, hide the base map and 
click on the georeferenced layer, then right click in the layer panel, select 
zoom to layer extent.   Turn on the basemap and try to figure where your 
georeferenced map ends up.  Look at the coordinates. That should help.  You 
need to carefully select the input (best guest) and output projection (the 
basemap projection) in the georeferencer plugin.

Nicolas

> Le 7 mai 2017 à 16:14, Charlotte Wolter [via OSGeo.org] 
>  a écrit :
> 
> Hello, 
> 
>  We were using the georeferencing plug-in to add 
> georeferenced points to a historic map. 
>  Everything seemed to go fine. We added four points, then 
> clicked on the small green arrow that supposedly sets it in motion. 
> We got a finished georeferenced historic map TIFF, but the new map 
> would not display superimposed on OpenStreetMap (our basemap). Both 
> the TIFF layer and the OpenStreetMap layer appear in the Layers 
> panel, but we see only the OpenStreetMap layer. 
>  How can we superimpose the new georeferenced TIFF on the 
> OpenStreetMap layer? 
>  Thanks 
> 
> Charlotte Wolter 
> 
> 
> Charlotte Wolter 
> 927 18th Street Suite A 
> Santa Monica, California 
> 90403 
> +1-310-597-4040 
> [hidden email] 
> Skype: thetechlady 
> 
> 
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[Qgis-user] Issue with georeferencing plug-in

[Charlotte Wolter]

Hello,

We were using the georeferencing plug-in to add 
georeferenced points to a historic map.
Everything seemed to go fine. We added four points, then 
clicked on the small green arrow that supposedly sets it in motion. 
We got a finished georeferenced historic map TIFF, but the new map 
would not display superimposed on OpenStreetMap (our basemap). Both 
the TIFF layer and the OpenStreetMap layer appear in the Layers 
panel, but we see only the OpenStreetMap layer.
How can we superimpose the new georeferenced TIFF on the 
OpenStreetMap layer?

Thanks

Charlotte Wolter


Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
+1-310-597-4040
techl...@techlady.com
Skype: thetechlady


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[Qgis-user] QGIS Functionality Survey

[Viktória Vargová]

Dear respondents,
my name is Viktória Vargová. I am studying Geography and German language at
the University of Prešov and now I am working on my bachelor thesis about
QGIS software. One of the aims of thesis is to find out user satisfaction
with basic QGIS functionality.

I would like to request you to fill this survey, which is anonymous and
will be used only for purposes of bachelor thesis. Please read the
questions carefully and choose one of the options which you agree with.

Thank you very much for your time and cooperation.​
  QGIS Functionality Survey

​
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Re: [Qgis-user] Value Tool Maintainer? - Bilinear interpolation in value tool plugin

[Lukas Winiwarter]

Hi Werner,

it seems to me the best option would be to join your fork - I'll gladly 
accept your invitation. I'll take some looks at the source code of both 
Etienne's and your repo tomorrow. Also, I might be able to help with the 
migration to QGIS3, depending on the projects I'll have at that time. 
But it's definetely something I'd like to do.


@Richard, Etienne: In my opinion it would make sense to have a single 
plugin covering your, Werner's and my work - would you be willing to 
pull the updated version for QGIS3, once finished, or arrange some other 
common repo for QGIS3?


Best regards,

Lukas


Am 06.05.2017 um 11:02 schrieb Werner Macho:

Hi Lukas,

A few days (well, to be honest I think it's actually years) I forked the
Valuetool to extend it with the ability to display temporal structured
raster data values.
I try to maintain my version of "Valuetool" as good as I can (though I
now have to finish my thesis about this topic before going back to
actually work on it again).
An update/upgrade for QGIS 3.0 is definitely planned.
So if you like to work on it (and probably migrate your patch over to my
version) you can take a look at

https://github.com/mach0/mutant

You are more than welcome to join. If everything works good I am going
to start porting to QGIS 3.0 with July 2017.

Please give it a try .. and please report errors or malfunctions ;)

(For better communications I would be in vienna at least once a month)

kind regards
Werner

On 05/05/17 17:05, Lukas Winiwarter wrote:

Hi all,

I have just implemented a bilinear interpolation as an addition to the
very good Value Tool-Plugin for raster data and wanted to contact the
authors to arrange for a possible pull request.

Unfortunately, the links given at
http://plugins.qgis.org/plugins/valuetool/ are dead - does anybody know
how to contribute/contact the authors/maintainer?

Best regards,
Lukas



--
Lukas WiniwarterTU Wien,
Stud. Ass.  Department of Geodesy and
Tel: +43-(0)1-58801-12246   Geoinformation (E120),
Fax: +43-(0)1-58801-912246  Research Group Photogrammetry
Email: lukas.winiwar...@tuwien.ac.atGußhausstraße 27-29
http://photo.geo.tuwien.ac.at/  1040 Vienna, Austria

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Re: [Qgis-user] [QGIS-Developer] Expression Functions: Where are they used in QGIS Desktop? Which ones won't work "outside"?

[DelazJ]

Hi,
I may have overlooked your list but note that anytime you find a
data-defined override button, there's an expression dialog behind (using
the Edit option), and this button is spread over layer properties dialog
(style, diagram, label...) and composer items' options (almost all).
Processing algorithms also have the expression engine.

Some update of the official docs (though we didn't go through each dialog)
https://docs.qgis.org/2.18/en/docs/user_manual/working_with_vector/expression.html

Harrissou

2017-05-07 17:01 GMT+02:00 Stefan Keller :

> Hi,
>
> Tomorrow I'll be giving a Workshop about "Easy Programming QGIS with
> Python for custom Expression Functions (EFns)" [1].
>
> Question 1: Below you'll find an initial list I compiled where EFns
> are used in QGIS Desktop. => Did I miss an occurrence?
>
> Question 2: I tried to make a categorization for several reasons. One
> reason for this is to realize that a EFn may not work outside QGIS
> Desktop. Style-related EFns for example won't work currently in
> qgis2web or QGISCloud. => Any comments?
>
> :Stefan
>
> [1] https://2017.geopython.net/#schedule
>
> List where EFns are used in QGIS (probably incomplete):
>
> "Server-side" / data-related:
> * "Select features using an expression" (Layer property).
> * "Filtering features" while loading from source. Switch to the form
> view in the attribute table (button on bottom right corner) > click on
> 'Show All Features' (bottom left) and select 'Advanced Filter
> (Expression)'.
> * "Layer > Properties > Tab Fields" in Button "Text Edit" in Default-
> and in Constraints-Field.
> * "Layer > Properties > Tab Style" in "Label with".
> * "Field Calculator" to defining new or virtual fields (Layer property).
> * "Conditional formatting" in the attribute table (Create a new rule
> and set the condition to the output of a custom EFn).
> Analysis-related:
> * "Statistical Summary" Panel (Layer property).
> * "Atlas Generation" in the Print Composer. Project > Print Composer >
> Check 'generate an atlas' > Set CEF based values for page name, filter
> and output filename.
> "Client-side" / style-related:
> * "Map Tip" tool (Layer property).
> * "Rule based labeling". Layer Properties > Labels > Select Rule based
> labeling from the drop-down menu > Click on the '+' button and add a
> CEF based filter (... button).
> * Part of "Geometry generator" in "Style > Symbol Layer Type"
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[Qgis-user] Expression Functions: Where are they used in QGIS Desktop? Which ones won't work "outside"?

[Stefan Keller]

Hi,

Tomorrow I'll be giving a Workshop about "Easy Programming QGIS with
Python for custom Expression Functions (EFns)" [1].

Question 1: Below you'll find an initial list I compiled where EFns
are used in QGIS Desktop. => Did I miss an occurrence?

Question 2: I tried to make a categorization for several reasons. One
reason for this is to realize that a EFn may not work outside QGIS
Desktop. Style-related EFns for example won't work currently in
qgis2web or QGISCloud. => Any comments?

:Stefan

[1] https://2017.geopython.net/#schedule

List where EFns are used in QGIS (probably incomplete):

"Server-side" / data-related:
* "Select features using an expression" (Layer property).
* "Filtering features" while loading from source. Switch to the form
view in the attribute table (button on bottom right corner) > click on
'Show All Features' (bottom left) and select 'Advanced Filter
(Expression)'.
* "Layer > Properties > Tab Fields" in Button "Text Edit" in Default-
and in Constraints-Field.
* "Layer > Properties > Tab Style" in "Label with".
* "Field Calculator" to defining new or virtual fields (Layer property).
* "Conditional formatting" in the attribute table (Create a new rule
and set the condition to the output of a custom EFn).
Analysis-related:
* "Statistical Summary" Panel (Layer property).
* "Atlas Generation" in the Print Composer. Project > Print Composer >
Check 'generate an atlas' > Set CEF based values for page name, filter
and output filename.
"Client-side" / style-related:
* "Map Tip" tool (Layer property).
* "Rule based labeling". Layer Properties > Labels > Select Rule based
labeling from the drop-down menu > Click on the '+' button and add a
CEF based filter (... button).
* Part of "Geometry generator" in "Style > Symbol Layer Type"
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Re: [Qgis-user] QGIS crash - SOS

[DelazJ]

Hi,

2017-05-07 13:37 GMT+02:00 Velizar Strumberger <
velizar.strumber...@gmail.com>:

> Hi Harrissou,
> thank you very much for the advice that SOLVED the problem. All the
> plugins were installed but turned off. I take this opportunity to ask you
> another question:
>
Good to hear that works


> A long time ago (QGIS Brighton 2.6.1) I used the RGB Composite and it
> worked OK (I get a colored image from three Landsat bands). Now with QGIS
> 2.12 to 2.18 the RGB composite is a gray image. However when I use the
> plugin Semi Automatic Classification I get a "normal" color image.
>
> Sorry but I'm not used to manipulate raster data. Can't help on that. I
think I read some discussion about this few weeks ago but can't find the
message. I'm CCing the user so that someone else can answer - do not forget
to always reply to the list (instead of direct reply) to make everybody
aware of the evolution of your needs

Regards,
Harrissou

> Thank you once again.
>
> Regards
> Strumbi
>
> On Sat, May 6, 2017 at 10:06 PM, DelazJ  wrote:
>
>> Hi Strumbi,
>>
>> Processing, vector, raster as well as web menus are filled by plugins
>> features. It means that you need some plugins activated in the Plugin
>> Manager (in this case, Processing, GdalTools and Metasearch) to have them
>> available or contain particular Core features.
>> By cleaning your PC, you reset your QGIS parameters so these plugins need
>> to be reenabled.
>>
>> Hope that helps,
>> Harrissou
>>
>> Envoyé depuis mon HTC
>> - Reply message -
>> De : "Velizar Strumberger" 
>> Pour : 
>> Objet : [Qgis-user] QGIS crash - SOS
>> Date : sam., mai 6, 2017 20:33
>>
>> I am in the middle of a project and my QGIS 2.18.1 crashed when I try to
>> start it. In the task manager I notice several applications qgis.db that
>> were running. I had to hard reset my PC.  When I started QGIS once again I
>> noticed that in the Menu Toolbar: Processing and  WEB were missing. The
>> Vector and Raster menus were almost empty. For Vector only Open Street Map
>> remained and for Rater the Raster Calculator and Align Raster. I
>> uninstalled QGIS, deleted .qgis2, cleaned my registry (CCleaner) and
>> installed QGIS 2.18.7. The result was the same: no Vector or Raster
>> functions except the mentioned. However I did notice that the Decoration I
>> used before QGIS crash remained active (Scale Bar and Arrow).
>> What am I doing wrong. Please help.
>> Thank you in advance
>> Strumbi
>>
>
>
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Re: [Qgis-user] QGIS crash - SOS

[Andre Joost]

It Looks like Python support has been dropped after the crash. It might 
be necessary to re-install Python or QGIS, depending on your OS.


HTH,
André Joost

Am 06.05.2017 um 20:33 schrieb Velizar Strumberger:

I am in the middle of a project and my QGIS 2.18.1 crashed when I try to
start it. In the task manager I notice several applications qgis.db that
were running. I had to hard reset my PC.  When I started QGIS once again I
noticed that in the Menu Toolbar: Processing and  WEB were missing. The
Vector and Raster menus were almost empty. For Vector only Open Street Map
remained and for Rater the Raster Calculator and Align Raster. I
uninstalled QGIS, deleted .qgis2, cleaned my registry (CCleaner) and
installed QGIS 2.18.7. The result was the same: no Vector or Raster
functions except the mentioned. However I did notice that the Decoration I
used before QGIS crash remained active (Scale Bar and Arrow).
What am I doing wrong. Please help.





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