[GRASSLIST:6286] Re:Re: GPS points off by about 120m to the west

Michele michele.rocc at libero.it
Wed Mar 30 03:11:51 EST 2005


> > the GPS was set for the same projection parameters...

I think that what Mr. Hamish said is true, and suggest to convert points from wgs84
to your datum using v.proj.

Michele. 


> 
> The GPS is exporting waypoints in WGS84;
> the error you are seeing is surely due to a datum shift;
> v.in.garmin should take care of all that for you.
> 
> i.e. regardless of what you have the GPS datum set to display on the
> screen, it will output WGS84. At least that what my Garmins do.
> 
> were you importing with v.in.garmin or v.in.ascii?
> 
> 
> note v.in.garmin in 6.0 is broken, get the latest version of the script
> from CVS.
> 
> 
> 
> Hamish
> 
> 



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