[Proj] Problems with /Op option used to compile proj in Microsoft Visual Studio

Charles Karney charles.karney at sri.com
Tue Mar 20 16:32:48 EST 2012

On 03/20/12 13:09, Calogero Mauceri wrote:
> Glynn, thank you very much for your explanation. So the smaller is the
> distance between the two points of the tpeqd, then the less accurate are
> the conversions. Those are really bad news:(.

In the limit where the distance between the two central points AB
vanishes tpeqd degenerates to the azimuthal equidistant projection (the
spherical variety because tpeqd is only implemented for a sphere).  So
if you're projecting a point C and CA >> AB and CB >> AB, you might get
more accurate results using aeqd.


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