[Proj] setting lambert conformal conic projection in gdalwarp

Charles Karney charles.karney at sri.com
Tue Aug 16 17:26:13 PDT 2011


On 08/16/11 18:28, Jose Gonçalves wrote:
> Matt
>
> There is a problem with the lcc projection. The two latitudes +lat_1 and
> +lat_2 define the standard parallels, where the cone intersects the
> ellipsoid. They can't be both zero (the cone would degenerate into a
> cylinder).

Of course, they *can* both be zero and the equations then become those
of the Mercator projection.  It's just that the authors of proj.4 chose
not to handle this case.

   --Charles




More information about the Proj mailing list