On Jan 6, 2008 12:12 AM, David Finlayson <[EMAIL PROTECTED]> wrote: > Your task sounds like it would be best done by a small script or C > program. Just read the data in a line-at-a-time and check if the > current line is larger than the previously stored line. At the end of > the file, print out the largest line (to a file if you have multiple > results to store). Probably 5 or 6 lines of Perl/Python at most and > you would be able to read arbitrarily huge files (millions of rows). > Most other solutions would introduce complexity or unnecessary > overhead. For lidar data, you may not have enough RAM to hold the > whole file in memory and the last thing you want to do is attach > topology to each point before you manipulate it.
Possibly code from r.in.xyz could be recycled for v.univar to operate on the geometry. I also don't think that you could handle this in R, so a C implementation is needed. Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
