Re: [GRASS-user] Clipping LiDAR data

[Guâno]

maybe v.select?

Carlos



On Tue, Apr 21, 2009 at 21:06, Jack Lonsdale lonsd...@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.
a.k.a. Guano - Linux User #89721
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Re: [GRASS-user] Clipping LiDAR data

[Nikos Alexandris]

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

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Re: [GRASS-user] Clipping LiDAR data

[Hamish]

 Jack Lonsdale wrote:
  Is there an easy way to clip a LiDAR data file?

Nikos wrote:
 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=... ?


tip now added to the wiki LIDAR page,
  http://grass.osgeo.org/wiki/LIDAR


Hamish



  

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