[GRASSLIST:1730] FW: EGM96

GRASS GRASS user
1

Hello,

(this message might come twice, I get a returned mail because of an not
reachable DNS-Server).

I need some advice in the area of projections...

How to create a location with the following attributes:

Projection: UTM
Horizontal Datum: WGS84
Geoid Model: EGM96 (thats the problem)
Vertical Reference Mean Sea Level (MSL)

It seems, that GRASS have no idea about EGM96, is there another Geoid-name with
the simular specifications?

Is the way correct to import the data into an UTM location, create a
Gaus-Krüger location and import the data from the UTM-location with r.proj?

Thanks,
Dieter

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 192 or Ext. 152
Fax: +49 (0) 7022 404 Ext. 166

Date: Sat, 06-Apr-01 12:00:00 +0000 (GMT)
Time: 15:28:25

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--------------End of forwarded message-------------------------

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Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 192 or Ext. 152
Fax: +49 (0) 7022 404 Ext. 166

Date: Tue, 09-Apr-01 12:00:00 +0000 (GMT)
Time: 13:56:47

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2

Hello Grasslist,
sorry, my message was queued and now it's comming through, while Markus had
sent this for my. Apologize for that.

I projected the data in GRASS and get good results, my question was because
someone had projected the data in ArcInfo and had 500m difference to the
correct location. I assuemd that it might get wrong without a given geoid, but
now I know better. It seems to me, that he had made some mistake, or GRASS
might be better...

Thanks,
Dieter

On 09-Apr-01 Dieter Lehmann wrote:

Hello,

(this message might come twice, I get a returned mail because of an not
reachable DNS-Server).

I need some advice in the area of projections...

How to create a location with the following attributes:

Projection: UTM
Horizontal Datum: WGS84
Geoid Model: EGM96 (thats the problem)
Vertical Reference Mean Sea Level (MSL)

It seems, that GRASS have no idea about EGM96, is there another Geoid-name
with
the simular specifications?

Is the way correct to import the data into an UTM location, create a
Gaus-Krüger location and import the data from the UTM-location with r.proj?

Thanks,
Dieter

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 192 or Ext. 152
Fax: +49 (0) 7022 404 Ext. 166

Date: 06-Apr-01
Time: 15:28:25

----------------------------------

--------------End of forwarded message-------------------------

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 192 or Ext. 152
Fax: +49 (0) 7022 404 Ext. 166

Date: 09-Apr-01
Time: 13:56:47

----------------------------------

----------------------------------
Dieter Lehmann
University of applied Sciences
Schelmenwasen 4-8
D-72622 Nuertingen, Germany
lehmann@fh-nuertingen.de
Phone: +49 (0) 7022 404 Ext. 192 or Ext. 152
Fax: +49 (0) 7022 404 Ext. 166

Date: Thu, 11-Apr-01 12:00:00 +0000 (GMT)
Time: 16:48:32

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