[Proj] map coordinates in different coordinate system

[Hamish]

Gerald wrote:
> As pointed out before, the [+]south option only applies to
> [+]proj=utm and causes the addition of  10,000,000 meters
> to the northing (y) value so that it is positive in the
> southern hemisphere.

FWIW (in "Frank's" PROJ.4 at least) aea and stere also consider
+south, but in those cases it changes the sign of Pi/2.


Hamish
(mid-winter)