Hi Jon,
Thanks for your reply. It's very interesting to make a python script,
even if the input data doe not come from grass database as I would like.
Cheers,
Frank
Le 31/10/2018 à 12:35, Jón Eiríksson a écrit :
The following partial script may be helpful (having the source map in
shape format):
assume folder in home directory containing source map - in this case
contours.shp
v_w,v_s,v_e,v_n are string variables with destination region
the commands create a subset defined by the destination region:
contours.shp
note that the identical naming of input and output is perhaps
confusing but harmless
as long as the home directory does not contain files named contours.*
—
importing required modules
import os
import sys
import subprocess
from array import array
import string
import math
from grass.script import core as grass
from grass.script import db as grass
excerpt
|cmd = 'ogr2ogr -clipsrc' + ' ' + v_w + ' ' + v_s + ' ' + v_e + ' ' +
v_n cmd = cmd + ' ' + '~/contours.shp' + ' ~/folder_name/contours.shp'
subprocess.call(cmd, shell = True) grass.run_command('v.in.ogr',
input='contours.shp', layer='contours', output='contours') |
Jon
On 31 Oct 2018, at 10:12, Frank David wrote:
Hello,
What is the best and fast way to make a copy of a part of vector
map (national) to get a smaller territory ? (partial copy).
Thank you for your advice !
Frank
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