[GRASS-user] g.list in a python script

GRASS GRASS user
1

In a python script, I am doing g.list to get a certain set of rasters, then r.series to sum the values. I find that g.list adds a newline character at the end of the string, and that causes r.series to fail. I've added the python rstrip('\n') to avoid this.
Is that the expected output from g.list?

Here's the code that works:

rast_list = gscript.read_command('g.list', type='rast', separator='comma', pattern='ims_*')
rast_list = rast_list.rstrip('\n')
gscript.run_command('r.series', input=rast_list, output=ttl_ims_precip, method='sum', overwrite=True)

Without the "rstrip" call, then r.series fails.

This is on Mint 18 with grass 7.0.4

2

On Sat, Aug 13, 2016 at 7:30 PM, Micha Silver <micha@arava.co.il> wrote:

In a python script, I am doing g.list to get a certain set of rasters, then
r.series to sum the values. I find that g.list adds a newline character at
the end of the string, and that causes r.series to fail. I've added the
python rstrip('\n') to avoid this.
Is that the expected output from g.list?

Here's the code that works:

rast_list = gscript.read_command('g.list', type='rast', separator='comma',
pattern='ims_*')
rast_list = rast_list.rstrip('\n')
gscript.run_command('r.series', input=rast_list, output=ttl_ims_precip,
method='sum', overwrite=True)

Without the "rstrip" call, then r.series fails.

Would this interface to g.list work better?

https://grasswiki.osgeo.org/wiki/GRASS_Python_Scripting_Library#Interface_to_listing_maps_.28g.list.29

Markus