[Freegis-list] GPS data processing

[Bernhard Reiter]

On Mon, Jun 07, 2004 at 03:17:22PM +0200, Nils Faerber wrote:
> Am Mo, den 07.06.2004 schrieb Ayse Sayan um 15:10:

> > I have a Trimble Lassen GPSreceiver. I want to make data processing
> > from the raw data that I get from my receiver. I am a starter., So
> > does anybody have an idea how I can start?

Try to get an application that can get the date into your GNU/Linux system.
A search revealed that the GPSreceiver speacks an NMEA protocol.
www.freegis.org has five matches to that term:
http://freegis.org/search.en.html?search=NMEA
Many other probably also speak NMEA.

> I am sorry but I can not.
> But this question seems to become a FAQ here and I am pretty sure that
> there are some experts here on the list that could give some hints.

Haven't had that impression lately.
At least not when looking at the questions.
It seems that there are several different questions.

> So why not start a small "Dummy's Guide To GPS GIS Processing"?

Because most people are not Dummies and I do not want to treat them 
as being one. ;)

> I would be willing to contribute as far as I can!

First processing steps for receiving GPS data is:
 	a) Get the raw data somehow.
	b) (optional) correct it when using other references
	c) Convert it into the right format.
		If you have time information, you can create polygons (tracks)
		Otherwise you have points.

Now you have a regular GIS layer and processing this further
would be a GIS course subject.

There is a FreeGIS Tutorial section about using two GPS applications.
It is in German:
	http://www.freegis.org/freegis_tutorial/online/node132.html

Note that gpsdrive and KFlog are interesting application for GPS data. :)

	Bernhard
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