Hello fellow GRASS users,
I have some problems using the commands that modify the rasters in my
dataset in a python script. I will post the code example for the r.in.gdal
but it is the same for g.remove.
I am quite new to Python GRASS programming so I do not really know a lot of
stuff about the libraries and functions.
The python script is as follows:
First, details about the environment, to see that some things work:
----
import grass.script as grass
env = grass.gisenv()
print env
{'MAPSET': 'PERMANENT', 'GISDBASE': 'C:/Users/matei/Documents/GISDataBase',
'LOCATION_NAME': 'North-Carolina', 'GRASS_GUI': 'wxpython'}
v = grass.read_command("g.version" )
print v
GRASS 6.4.1 (2011)
mapsets = grass.mapsets(False)
print mapsets
['PERMANENT', 'landsat', 'sqlite', 'user1']
r = grass.read_command("g.list", type='rast')
print r
----------------------------------------------
raster files available in mapset <PERMANENT>:
Elev_100 elev_srtm_30m lsat7_2002_62 ....
----
And the problem:
---
r =
grass.run_command("r.in.gdal",flags="o",input=r'D:\BazineWGS84\flowdir\w001001.adf',
output="FldirTmp",overwrite=True)
print r
-1073741511
r = grass.raster.raster_info("FldirTmp")
ERROR: Raster map <FldirTmp> not found
---
Other commands that create rasters like
grass.mapcalc("Elev_200=elevation+200") work well
I tried other possibilities like using forward slash or double backslashes
in the path, not using the o flag but it does the same.
I get that number ”-1073741511” as an answer and the result is not created.
It does not raise any error or anything else.
In the grass console the same thing works like a charm:
-----
r.in.gdal -o --overwrite input=D:\BazineWGS84\flowdir\w001001.adf
output=FldirTmp
Over-riding projection check
r.in.gdal complete. Raster map <FldirTmp> created.
r.info FldirTmp
+----------------------------------------------------------------------------+
| Layer: FldirTmp Date: Mon Apr 18 12:35:46 2011
|.....
-----
--
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