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 <grass-user-boun...@lists.osgeo.org> On Behalf Of Frank David Sent: søndag 21. oktober 2018 21:35 To: Laurent C. <lrn...@gmail.com> Cc: GRASS user list <grass-user@lists.osgeo.org> 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 <frank.da...@geophom.fr<mailto:frank.da...@geophom.fr>> 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 > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org<mailto:grass-user@lists.osgeo.org> > https://lists.osgeo.org/mailman/listinfo/grass-user -- Geophom 327 rue de Vieille Cour 44521 OUDON Tel +33(0)2 85 52 02 59 - Port +33(0)6 04 47 91 06 www.geophom.fr<http://www.geophom.fr>
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