[GRASS-user] v.in.ogr in Python script not working

[Uwe Fischer]

Hello,

 

I' new to this list and this is my first question. I try to develop a script
that is able to import CAD files (MicroStation DGN) into a grass mapset.
First, I tried the command v.in.ogr in the menu system and everything works
fine. The result is exactly as desired. Then, I tried to write a Python
script that is able to do exactly the same but without starting GRASS. 

 

The command line provided by the menu input (in QGIS' Grass toolbox) reads:

 

v.in.ogr dsn=D:/my.dgn output=gr03 type=boundary,centroid snap=0.01
min_area=1 "where="Level" = 1" -o

 

Searching the internet for sample scripts, I found some of those and
modified my command string according to the samples:

 

import grass.script as grass

import grass.script.setup as gsetup

gsetup.init(gisbase,gisdbase,location,mapset)

 

input_dgn = "D:\\my.dgn"

 

grass.run_command("v.in.ogr",

                  dsn = input_dgn,

                  output = 'gr03',

                  type = 'boundary,centroid',

                  snap = 0.01,

                  min_area = 1,

                  where = """"Level" = 1""")

 

 

Unfortunately, this does not work. I get an error crash message telling me
that v.in.ogr does not work any more. I tried many different options,
including other use of quotes or leaving some args off. Nothing helped.
Maybe there is a keyword conflict or an issue with the order of the args?
The "where" part is very important since it helps me split the data like i
need to. I use Grass 6.4.4

 

Thanks a lot for help an ideas,

 

Regards, Uwe

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