I tried georeferencing one of these images (
http://www.oera.net/How2/TextureMaps2.htm ) using MapWindow GIS; the pogram
generated a .jgw file, which then I fixed by replacing , by . and changing
something like 179.12345 to 180.0 .
Then I tried again this command:
gdalwarp -s_srs +proj=merc
I think you don't define enough the projections and should specify more
parameters.
PROJ.4 documentation and the following links may be helpful :
http://www.remotesensing.org/geotiff/proj_list/mercator_1sp.html
http://www.remotesensing.org/geotiff/proj_list/mercator_2sp.html
Hi,
A couple of things,
1. Planar world is not 44.000.000 meters wide. It follows from the meter
definitions that it is 40 000 000 meters
2. Mercator maps cannot span to +/- 90 degrees latitude
3. The images in www.oera.net/How2/TextureMaps2.htm are not Mecator
4. and changing something