Hi List, I'm using v.generalize in a script (excerpt included below) to smooth the boundaries of a polygon vector dataset. In the attached example (input_vector.png), I would like to *only* generalize the internal lines (blue), and leave the external boundary (green line) unchanged. I thought that the flag, '-l' might provide this functionality, but unfortunately the resulting external boundary is changed significantly (attached vgeneralize_output.png).
Is this functionality available in v.generalize or is there another way
that this could be achieved in GRASS?
Thanks in advance.
Best regards,
Daniel.
##run generalisation (step: 1 - douglas)
gscript.run_command('v.generalize', flags='l', overwrite=True,
input='segments', output='segments_douglas', method='douglas', threshold=1)
##run generalisation (step: 2 - sliding average)
gscript.run_command('v.generalize', flags='l', overwrite=True,
input='segments_douglas', output='segments_douglas_slide',
method='sliding_averaging', threshold='2', look_ahead='9', slide='0.1',
iterations='3')
##run generalisation (step: 3 - snake)
gscript.run_command('v.generalize', flags='l', overwrite=True,
input='segments_douglas_slide', output='segments_douglas_slide_snake',
method='snake', threshold='3', alpha='1', beta='1')
pEpkey.asc
Description: application/pgp-keys
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