pnmmercator

Perform Mercator transformations on Netpbm images. See also: pnmglobe. More information: https://netpbm.sourceforge.net/doc/pnmmercator.html.

• Convert a rectangular projection worldmap to Mercator projection:

pnmmercator path/to/image.pnm > path/to/output.pnm

• Convert a Mercator projection worldmap to rectangular projection:

pnmmercator -inverse path/to/image.pnm > path/to/output.pnm