[Freegis-list] how to visualise GPS data ?

[Philipp H. Mohr]

Maciek,

thank you for the pointer. I am still fighting a bit with the 1000ds of
grass options, but I have managed to visualise the data in more or less
the format I am interested in.

Cheers,
Phil

On Tue, 7 Feb 2006, Maciek Sieczka wrote:

> On Tue, 7 Feb 2006 12:19:10 +0000 (GMT)
> "Philipp":
>
> <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
>