Hi Stefan,
Sorry If I'm not clear... Yes I want add my new map in the active map
display. Unfortunately "add created map(s) into layer tree” tick-box
does not appear in my GUI script (I don't know why) and I would like to
make it visible or to add another one in options tab. Just do
run_command("d.rast", map=my_map) does not work..
Cheers,
Frank
Le 22/10/2018 à 10:20, Stefan Blumentrath a écrit :
Hi Frank,
I think Laurents solution is for rendering maps to file/image.
Do I understand you correctly, that you are looking for a solution for
adding maps to the currently active map display (and respective Layer
manager)?
I have not found a documentation and would be interested too. I assume
one has to use wxgui code, like e.g. here:
https://trac.osgeo.org/grass/browser/grass/trunk/gui/wxpython/core/render.py
?
Yet, having the “Add created map(s) into layer tree” tick-box that
core modules have available also for addons (without GUI programming
for addon devs) would be nice (if possible)…
Kind regards,
Stefan
*From:*grass-user <[email protected]> *On Behalf Of
*Frank David
*Sent:* søndag 21. oktober 2018 21:35
*To:* Laurent C. <[email protected]>
*Cc:* GRASS user list <[email protected]>
*Subject:* Re: [GRASS-user] d.rast in python script
Hello Laurent,
Thank you for your help. I'm very surprised by the complexity of the
way to display a raster. I thought that only d.rast was needed. Other
grass command are so simple to use...
Anayway, I don't understand why you need to set a image width and
height. is it pixel number between west to east and south to north
from region ?
and from where "img_file_name" is coming ? (my layer's name is "my_map")
To remove raster from display, I just manually remove from the layer tree.
Cheers,
Frank
Le 20/10/2018 à 23:06, Laurent C. a écrit :
Hello Frank,
It is not very straightforward, but it is possible.
Here is an example on how I do it:
import os
import grass.script as gscript
from grass.pygrass.gis.region import Region
# Set general env
os.environ['GRASS_RENDER_IMMEDIATE'] = "cairo"
os.environ['GRASS_RENDER_FILE_COMPRESSION'] = "9"
os.environ['GRASS_RENDER_FILE_READ'] = "TRUE"
# Set image size using the region
region = Region()
xr = region.cols
yr = region.rows
ratio = xr/yr
height = int(WIDTH / ratio) # Choose the width you like
os.environ['GRASS_RENDER_WIDTH'] = str(WIDTH)
os.environ['GRASS_RENDER_HEIGHT'] = str(height)
# Then you can draw
os.environ['GRASS_RENDER_FILE'] = img_file_name
gscript.run_command('d.rast', map=my_map, quiet=True)
Be aware that every time you run your script, it will add layer on
the file.
So you might want to delete the png file between the runs.
Cheers,
Laurent
Le ven. 19 oct. 2018 à 13:00, Frank David <[email protected]
<mailto:[email protected]>> a écrit :
>
> Hello,
>
> I wrote some python script and I do not find how to display created
> rasters.
>
> I tried to use d.rast but I believe this command is not designed
to be
> used in python script (no monitor available with d.mon -l). Am I
wright
> ? so how to do ?...
>
> Thank you for your help.
>
> Frank
>
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