Is there an easy way to clip a LiDAR data file?
I have a 2GB raw dataset which I imported with v.in.ascii without
topology or creating database because that caused memory to get full.
I was going to just run the v.lidar.edgedetection for the whole dataset,
but that seems to take forever..
So I thought I could clip down the vector to a subsample using
v.in.region and then v.overlay, but this produces an error because of no
topology, fair enough! So maybe I can build the topology with
v.build...again memory runs out.
Any ideas? Thanks, Jack
maybe v.select?
Carlos
On Tue, Apr 21, 2009 at 21:06, Jack Lonsdale <lonsdale@unbc.ca> wrote:
Is there an easy way to clip a LiDAR data file?
I have a 2GB raw dataset which I imported with v.in.ascii without
topology or creating database because that caused memory to get full.
I was going to just run the v.lidar.edgedetection for the whole dataset,
but that seems to take forever..
So I thought I could clip down the vector to a subsample using
v.in.region and then v.overlay, but this produces an error because of no
topology, fair enough! So maybe I can build the topology with
v.build...again memory runs out.
Any ideas? Thanks, Jack
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Carlos Henrique Grohmann - Geologist D.Sc.
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carlos dot grohmann at gmail dot com
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Can’t stop the signal.
On Tue, 2009-04-21 at 17:06 -0700, Jack Lonsdale wrote:
Is there an easy way to clip a LiDAR data file?
Hi Jack. Did you try the "-r" switch?
Something like "g.region" or "d.zoom" to some sub-region, then
"v.in.ascii -r in=... out=..." ?
Kind regards, Nikos