[GRASS5] moving map application

GRASS GIS GRASS GIS developer
1

Hi all,

I am wondering if anyone has done any work with GRASS to make a moving map application using GPS as a input device similar to Oxi explorer?

If not could GRASS be extended relatively easily to produce this kind of application?

thanks
Stephen

2

I am wondering if anyone has done any work with GRASS to make a moving
map application using GPS as a input device similar to Oxi explorer?

If not could GRASS be extended relatively easily to produce this kind
of application?

Yes, I have done this but for GRASS 5.3. Slight tweaks required to
compile with the new build system in 5.4 and won't work at all with
GRASS 6 without a rewrite. It was written for an old version of GPSd
(included) which at the time required a serial NMEA stream from the GPS.
Newer versions of GPSd will do hotplug USB, take advantage of extra info
from non-NMEA proprietary data streams, etc. but again some rewriting of
my code would be needed I think. I don't really have any plans or time
to work on this currently but you are welcome to what's there.

see:
http://grass.itc.it/pipermail/grassuser/2004-February/024763.html
http://gpsd.berlios.de/

see also:
http://grass.ibiblio.org/grass60/manuals/html60_user/v.in.garmin.html
http://gpsbabel.sourceforge.net/

Hamish

3

I am wondering if anyone has done any work with GRASS to make a moving
map application using GPS as a input device similar to Oxi explorer?

If not could GRASS be extended relatively easily to produce this kind
of application?

I wrote:

see:
http://grass.itc.it/pipermail/grassuser/2004-February/024763.html

I should add that GRASS really isn't designed to do anything like this
and it will never be much more than a hack.

There is software that is designed to do this though:
  (blatant cut&paste from the gpsd homepage)

http://www.gpsdrive.cc/
http://www.kismetwireless.net/
http://www.pygps.org/
http://qpegps.sourceforge.net/
http://roadmap.digitalomaha.net/index.html

You could probably output GeoTIFFs and shapefiles from GRASS to use as
backdrops in these softwares and get much better results with less pain.

Hamish