Hi all,

Does anybody have a suggestion for subtracting the elements in one line vector from another line vector?

-D

On Jul 21, 2009, at 7:06 PM, Dwight Needels wrote:

Hi all,

I have two nearly identical line vectors, and I would like to extract the lines that differ between the two vectors into a third vector. Specifically, I want to isolate the connecting lines that were generated by v.net operation=connect. Something like:

[map_C = map_A   NOT   map_B]  for line features.

I thought I would be able to use v.overlay with operator=not, but it it appears to require that btype=area. It also appears that v.select allows only operator=overlap.

Can someone point me in the right direction?

I am using William Kyngesburye's 6.4.0RC3 on MacOS 10.5.7.

Thanks,

-Dwight
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