Greetings,
I've imported some MapInfo maps.
The problem is that there are 38,000 areas, and some have imported with their centroids and boundaries, but without the areas.
How do I re-create the missing areas from a set of boundaries and centroids?
( I have tried V.build but it still arrives with empty areas).
Richard Chirgwin
Richard Chirgwin wrote:
I've imported some MapInfo maps.
The problem is that there are 38,000 areas, and some have imported with
their centroids and boundaries, but without the areas.
GRASS "area" is a closed boundary(ies) + centroid inside.
How do I re-create the missing areas from a set of boundaries and
centroids?
You *propably* need to close boundaries, by snapping their
nodes. Depending on your dataset you might try v.clean
tool=snap to automate this.
( I have tried V.build but it still arrives with empty areas).
v.build is not the right tool.
Maciek