[GRASSLIST:4122] Re: Azimuthal Equidistant projection moves center latitude by 0.0299 degrees compared to specified lat_0

Markus Neteler neteler at itc.it
Mon Jul 22 13:11:42 EDT 2002


Hi Daren,

please report below to
http://grass.itc.it/bugtracking/bugreport.html

then we can easier track that down.

Thanks,

 Markus

On Mon, Jul 15, 2002 at 01:57:24PM -0400, Daren Zywicki wrote:
> When I create a new location with the azimuthal equidistant projection, my
> center latitude moves by 0.0299 degrees from the one I specify for lat_0 in
> the setup of the location. The center longitude lon_0 remains correct.
> 
> On redhat Linux 7.2, the shift is 0.0299. On solaris, under the same 
> location scenario,
> latitude is off by 0.004745 from the one specified by lat_0, and the longitude
> is correct.
> 
> Has anyone else run into this? Is this expected based on the
> azimuthal equidistant projection and choice of datum and ellipsoid (wgs84 in
> this case)?
> 
> Daren
> ____________________________________________________
> Daren J. Zywicki, PhD
> Georgia Tech Research Institute
> Sensors and Electromagnetic Applications Lab (SEAL)
> ____________________________________________________



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