Hello,
I've written a python script to generate an image combining a vector map
(myvector) and a raster (myraster) that has been generated using a mask.
It works great by default and creates an image with the default
dimensions 640x480 on a white background.
gscript.run_command('d.mon', overwrite=True, start='png',
output=filename)
gscript.run_command('d.rast', map='{0}@{1}'.format(myraster,
self.mapset))
gscript.run_command('d.vect', map='{0}@{1}'.format(myvector,
self.mapset), color='white', fill_color='none')
gscript.run_command('d.mon', stop="png")
I would like to have a transparent background and to change the
dimensions of the image to 1280x960.
Reading the documentation I had the impression that I just have to
modify some variables, but it does not work.
os.environ['GRASS_TRANSPARENT'] = 'TRUE'
os.environ['GRASS_WIDTH'] = str(1280)
os.environ['GRASS_HEIGHT'] = str(960)
gscript.run_command('d.mon', overwrite=True, start='png',
output=filename)
gscript.run_command('d.rast', map='{0}@{1}'.format(myraster,
self.mapset))
gscript.run_command('d.vect', map='{0}@{1}'.format(myvector,
self.mapset), color='white', fill_color='none')
gscript.run_command('d.mon', stop="png")
Thanks in advance for any advice.
Ciao
--
Jean Pierre Huart
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