[GRASS-user] d.rast in python script
frank.david at geophom.fr
Mon Oct 22 02:24:29 PDT 2018
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..
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
> I have not found a documentation and would be interested too. I assume
> one has to use wxgui code, like e.g. here:
> 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,
> *From:*grass-user <grass-user-bounces at lists.osgeo.org> *On Behalf Of
> *Frank David
> *Sent:* søndag 21. oktober 2018 21:35
> *To:* Laurent C. <lrntct at gmail.com>
> *Cc:* GRASS user list <grass-user at 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.
> 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.
> Le ven. 19 oct. 2018 à 13:00, Frank David <frank.david at geophom.fr
> <mailto:frank.david at 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
> > ? so how to do ?...
> > Thank you for your help.
> > Frank
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org>
> > https://lists.osgeo.org/mailman/listinfo/grass-user
> 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>
-------------- section suivante --------------
Une pièce jointe HTML a été nettoyée...
More information about the grass-user