[GRASS-dev] programming raster: how to get a latitude value of the pixel to be processed, even if mapset is not in Lat/lon?

[Glynn Clements]

Yann Chemin wrote:

> i would need to get a latitude value of the pixel to be processed,
> even if it is not in a Lat/lon projection system. is there a way to
> get this done from within GRASS libraries (or using some proj lib
> maybe?).

You need to use the PROJ library, see the r.proj source code for an
example of initialising a projection from the location's PROJ_INFO and
PROJ_UNITS files.

-- 
Glynn Clements <glynn at gclements.plus.com>