[Qgis-user] QEP 227: Add helper hooks to common Python geo libraries (shapely, numpy, pyproj)

[Nyall Dawson]

Hi all,

Please see https://github.com/qgis/QGIS-Enhancement-Proposals/issues/227
for a newly filed QEP concerning adding convenient helper methods to
interface PyQGIS with common external spatial libraries, including
shapely, pyproj and numpy.

Discussions and comments are welcome on the QEP page!

Nyall
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Re: [Qgis-user] Assistance required

[Ujaval Gandhi]

Do it in 2 steps. 'Extract by Location' form Processing Toolbox and use
'Disjoint' predicate with the buffer layer, and then do 'Random Selection'
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Ujaval Gandhi
Spatial Thoughts
mobile: +91-8095684687
email: uja...@spatialthoughts.com
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Twitter icon] 



On Tue, May 25, 2021 at 11:05 PM Frances Cornelius 
wrote:

> To whom it may concern
>
> I would like to randomly select points, but exclude the buffered zone of
> the road.  I've tried a couple of things and nothing seems to work.
>
> With best regards
> Frances
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[Qgis-user] Assistance required

[Frances Cornelius]

To whom it may concern

I would like to randomly select points, but exclude the buffered zone of
the road.  I've tried a couple of things and nothing seems to work.

With best regards
Frances
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Re: [Qgis-user] Aerial photo dates in legend without RGB patches?

[Michael Dufty]

Hi Kirk,
I just want to display the date in the legend.  Happy to add it manually for 
each layer by editing the layer name or any other method.
Applies equally to aerials I've produced myself, purchased, been supplied by a 
client or linked to a server.  Assuming I know the date, how can I display it 
in the legend?

Michael Dufty

From: Qgis-user  On Behalf Of Kirk Schmidt
Sent: Tuesday, 25 May 2021 10:08 PM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Aerial photo dates in legend without RGB patches?


Hi Michael:

Just to be clear, these are your own georeferenced aerial photo's or 
professionally produced ortho photo's (as opposed to satellite imagery).  If 
so, where would the date field come from, the name of the image files or 
perhaps embedded in the geotiff header (if using this file type)?

Kirk Schmidt


On 5/25/2021 10:22 AM, Michael Dufty wrote:
Has anyone got a good solution to display aerial photo dates in the legend?
I can change the name of the layer, but then it displays a huge useless R G B 
legend.  Is there any way to turn this off?  Setting the patch size to 0 
doesn't seem to be possible for local images, although it does work for WMS 
layers.
Alternatively is there a way to just put a manual line of text in the legend, 
other than with dummy layers/groups?

Michael Dufty




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--

Kirk Schmidt, MScF, BScF, RPF

General Manager

Nortek Resource Solutions Inc.

RR # 1

Thorburn, NS

B0K 1W0

Tel (902) 922.3607

Email: k...@nortekresources.com

Web: www.nortekresources.com
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Re: [Qgis-user] Aerial photo dates in legend without RGB patches?

[info]

  
  
Hi Michael,
Well, you could try the "Layer Tree Image Legend Widget" plugin
  available from (1).
  Basically if you have an image (png or jpg) of the raster 'date'
  you can display it in the layer legend.
  Note that with QGIS 3.18, the "huge useless R G B legend"
  is still displayed...
Regards,
  Benoit

(1) https://github.com/BC-Consulting/image_legend_widget
P.S. This is a plugin I've created.


On 25/05/2021 15:22, Michael Dufty
  wrote:


  
  
  
  
Has anyone got a good solution to display
  aerial photo dates in the legend?
I can change the name of the layer, but
  then it displays a huge useless R G B legend.  Is there any
  way to turn this off?  Setting the patch size to 0 doesn’t
  seem to be possible for local images, although it does work
  for WMS layers.
Alternatively is there a way to just put a
  manual line of text in the legend, other than with dummy
  layers/groups?
 
Michael
  Dufty
 
  
  
  
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Re: [Qgis-user] Aerial photo dates in legend without RGB patches?

[Kirk Schmidt]

Hi Michael:

Just to be clear, these are your own georeferenced aerial photo's or 
professionally produced ortho photo's (as opposed to satellite 
imagery).  If so, where would the date field come from, the name of the 
image files or perhaps embedded in the geotiff header (if using this 
file type)?


Kirk Schmidt


On 5/25/2021 10:22 AM, Michael Dufty wrote:


Has anyone got a good solution to display aerial photo dates in the 
legend?


I can change the name of the layer, but then it displays a huge 
useless R G B legend.  Is there any way to turn this off?  Setting the 
patch size to 0 doesn’t seem to be possible for local images, although 
it does work for WMS layers.


Alternatively is there a way to just put a manual line of text in the 
legend, other than with dummy layers/groups?


*Michael Dufty*


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--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
RR # 1
Thorburn, NS
B0K 1W0
Tel (902) 922.3607
Email: k...@nortekresources.com
Web: www.nortekresources.com

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[Qgis-user] Aerial photo dates in legend without RGB patches?

[Michael Dufty]

Has anyone got a good solution to display aerial photo dates in the legend?
I can change the name of the layer, but then it displays a huge useless R G B 
legend.  Is there any way to turn this off?  Setting the patch size to 0 
doesn't seem to be possible for local images, although it does work for WMS 
layers.
Alternatively is there a way to just put a manual line of text in the legend, 
other than with dummy layers/groups?

Michael Dufty

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Re: [Qgis-user] How to identify UTM zone

[Nicolas Devaux - Supagro]

Hi all,

I like to use epsg.io website to identify unknown coordinate system.

I really like the way you can identify specific points of interest on a 
map and how you can check its coordinates with different SCR... Very usefull


Nicolas Devaux

Gis teacher

Le 24/05/2021 à 14:30, jean Lukusa a écrit :

Hi all.
Someone(a non-scientist ) has sent me a point coordinates in UTM
So I want to know how to identify its UTM zone.

X 551000
Y 8733000

Jean Lukusa
B.Sc. Geology
Trained on Jorc  Code
GIS  Operator
+243812156128

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+33 (0)4 99 61 25 45  |

nicolas.dev...@supagro.fr 

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