Fwd: Re[4]: [gdal-dev] gdalwarp: mercator to lambert azimutal equeal area

2009-02-10 Thread jumpjack
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

Re: Fwd: Re[4]: [gdal-dev] gdalwarp: mercator to lambert azimutal equeal area

2009-02-10 Thread Even Rouault
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

Re: Fwd: Re[4]: [gdal-dev] gdalwarp: mercator to lambert azimutal equeal area

2009-02-10 Thread Joaquim Luis
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