On Thu, Jun 10, 2010 at 12:14 AM, Rich Shepard <[email protected]> wrote: > I thought that I could use LiDAR data within grass,
You can :) > but the 6.4 r.in.gdal > man page does not include that format. Is this the wrong module for these > data? There is no format "Lidar" - in fact there are many formats related to Lidar data: - raw x,z,y,w points in ASCII tables (v.in.ascii) - LAS format (LAS tools + v.in.ascii) - other point based ASCII formats (v.in.ascii) - points in 3D SHAPE format (vector, v.in.ogr) - rasterized DSM in GeoTIFF or whatever (raster, r.in.gdal) - ... > There are two topographic quadrangle files that cover the project drainage > basin, and the data DVDs cost $200 each. I want to make high resolution DEMs > of the project basin and try to determine flood elevations for different > storm events from those. According to the data source, "All data are format > specific to ESRI GIS format. Data must be viewed using specialty software > capable of viewing .shp, geotif, and ESRI grid formats." So GRASS can do that. > I suppose that r.in.gdal will import the .shp files. No, it is v.in.ogr. > I've not worked with > geotif or ESRI grid formats so any experiences of you folks with these > formats and LiDAR data will be much appreciated. For GeoTIFF, use r.in.gdal. To process Lidar point data, then use v.lidar.*. The already mentioned wiki page may be helpful, too. Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
