Micha Silver wrote:
xavier garcia acosta wrote:
Yes, you have understood my question. I've tried that you have
recommended to my and now I have the next problem, I've tried to do
“v.patch” with the option “copy also attribute table” with my two
GRASS vector maps and I have the error “Number of columns differ”. Do
you know how can I solve this?
Yes you're right.
To get this correct you have to add an (empty) attribute table with
exactly the same columns to the boundary vector first. So:
db.describe <your_point_vector> (to get the exact column types)
v.db.addtable <your_line_vector> column="col1 datatype, col2 datatype,
..."
then you succeed with:
v.patch -e <your_point_Vector>,<your_line_vector> out=tmp_patch
v.type tmp_patch out=point_line_vector
The output to v.type should show that you have boundaries and
centroids. Check attributes with
v.db.select <your_line_vector>
Ooops, typo, sorry.
That last line should be
v.db.select <point_line_vector>
_______________________________________________
grass-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-user
