On 11/05/2010 09:59 PM, Bryan Keith wrote:
On 10/19/2010 11:17 PM, Bryan Keith wrote:
Hello,
I have a vector line file that has lots of two-vertex lines. Many of
these two-vertex lines share endpoints and really just make parts of one
longer line. I'd like to dissolve these lines into one line when they
have the same end point. It looks like v.dissolve only works for areas.
Is there somewhere else I should be looking? Thank you.
Did you have a look at v.build.polylines ?
Additional note: line vectors have a direction. Two line segments with
an equivalent node (end point) will *not* connect if they are in
opposite directions. In this case you can try the v.edit tool=flip
option (on those segments only)
Thank you for the response. I finally got around to looking at this
today. I made a simple example and tested with v.build.polylines, and it
works great. Thank you.
However, it turns out that I have many duplicate lines in my dataset. I
created a simple example where there are duplicate lines, and
v.build.polylines doesn't work in that case. What do I need to look at to
get rid of duplicate lines?
v.clean tool=rmdupl
Might do it if the lines exactly overlap.
Bryan
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