Re: how to visualise GPS data ?
Maciek Sieczka <[email protected]>
| Newsgroups | gmane.comp.gis.freegis |
|---|---|
| Message-ID | <[email protected]> |
On Tue, 7 Feb 2006 12:19:10 +0000 (GMT) "Philipp H. Mohr" <[email protected]> wrote: <snip> > Insted of just plotting the points in 2D, I would like to plot the > density of the points in the 3rd dimension. In the 2D map the points > are just drawn above each other and it is not possible to see how > many there are. What I am after is some thing that partitions the > grid into cells and represents the number of point which fall into > every cell in the 3rd dimension. Hope this makes sense. Sounds like Grass should be able to do the job: - import GPS points into points vector layer: v.in.garmin (if using Garmin) / other v.in.* module (depending on how your GPS points are stored) - convert into raster grid layer storing the number of points in given vicinity as each cell value: v.neighbors - visualize the raster: nviz More: http://grass.itc.it/gdp/manuals.php. Good luck Maciek -------------------- W polskim Internecie s? setki milion?w stron. My przekazujemy Tobie tylko najlepsze z nich! http://katalog.panoramainternetu.pl/