[Proj] Small errors in modified stereographic
Oscar van Vlijmen
ovv at hetnet.nl
Sun Feb 17 03:31:01 EST 2008
Recently I checked the code from the files:
PROJ 4.6.0: PJ_mod_ster.c
There is a small error in the value of coefficient 'A3' in the projection
lee_os, and the wrong value of phi0 in the projection gs48.
The values according to Snyder are:
A3_Lee = -0.00881625 (not -0.0088162)
phi0_GS48 = 39.0 (not -39.0)
cf. J. P. Snyder: Map projections, a working manual, PP 1395, Ch. 26, p. 209
I assume the Snyder values are correct.
No big deal for lee_os, but gs48 will probably give completely wrong
Who cares? Nobody ever uses these projections.
For those who do care: you might want to correct your code.
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