nicholas.g.lawre...@mainroads.qld.gov.au wrote: > A client has a very large (millions of records) ascii file consisting > solely of x,y,z co-ordinates. > > They would like to reduce the number of records by weeking out points > that are too close to each other. > > Can GDAL or OGR weed out 3D points based on proximity to each other?
Perhaps libLAS (http://liblas.org/) and its utils will help, try txt2las with -scale or -xyz_scale option: http://liblas.org/browser/trunk/doc/txt2las.txt Best regards, -- Mateusz Loskot, http://mateusz.loskot.net Charter Member of OSGeo, http://osgeo.org _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev