Removing unwanted nodes

[Melissa Cowoski]

I want to create a vector file from a raster.  I scanned in a map with
lines marking different vegetation units.  I brought it into GRASS and
reclassified the map into two categories 1=line 0=no line.  I then used
r.thin to thin the lines to one pixel.  Afterwards, I ran r.line and chose
areas.  It created a vector file containing polygons made up of several
lines with their corresponding nodes.  I want to remove the nodes in order
to have one line surrounding each area.  The GRASS manual suggested I use
v.trim however it didn't improve the situation.  I looked in v.digit but I
didn't see anything that would work.  Any suggestions???


Melissa Cowoski
Stanford University
cowoski at pangea.stanford.edu