Hi guys!
After running r.thin on an area feature, i got this output:
http://img235.imageshack.us/my.php?image=schermorast140bl.png
Then, when converting to vector, grass told me to re-run r.thin...
Wich can be the matter?
Thx
Luca
--
"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa (Blaise
Pascal)."
GENTOO-GIS Development Team
jabber: casagrande@jabber.linux.it
Hallo,
your map displays areas. r.to.vect default setting is, that it tryes to
convert your raster map to vector-line file.
I would say, that you have to add the "feature" option to your command:
r.to.vect in=map out=map feature=area
jachym
On Tue, Mar 21, 2006 at 05:06:18PM +0000, Luca Casagrande wrote:
Hi guys!
After running r.thin on an area feature, i got this output:
http://img235.imageshack.us/my.php?image=schermorast140bl.pngThen, when converting to vector, grass told me to re-run r.thin...
Wich can be the matter?Thx
Luca--
"E' molto pi? bello sapere qualcosa di tutto, che tutto di una cosa (Blaise
Pascal)."GENTOO-GIS Development Team
jabber: casagrande@jabber.linux.it
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Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
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After running r.thin on an area feature, i got this output:
http://img235.imageshack.us/my.php?image=schermorast140bl.pngThen, when converting to vector, grass told me to re-run r.thin...
Wich can be the matter?
re-run r.thin multiple times until all the area is gone?
or maybe it is stuck in an ambiguous state for the r.thin algorithm.
Any way it can't make lines from areas, so you need to get rid of the
area somehow.
Hamish
