[GRASS-user] Re: reprojection from Projection Mollweide

Gabriele N. gis.gn at libero.it
Thu Dec 2 15:15:33 EST 2010


I found some other posts .... I'm getting close to the solution (I get good
results):

gdalwarp -s_srs '+proj=goode +ellps=sphere +lon_0=30E +towgs84=0,0,0,0,0,0,0
+x_0=3335846.22854 +y_0=20000' -t_srs '+proj=latlong +ellps=wgs84
towgs84=0,0,0,0,0,0,0' -te 7 33 34 59 map.tif map_wgs84.tif

I do not know why, but that's okay with +proj=good" and not "+proj = moll"

In addition, by removing the parameter y_0 = 20000 I get a more accurate
overlay.
So by the time I reprojected raster in the WGS84 as follows:

gdalwarp -s_srs ' proj=goode  ellps=sphere  lon_0=30E  towgs84=0,0,0,0,0,0,0 
x_0=3335846.22854' -t_srs ' proj=latlong  ellps=wgs84 towgs84=0,0,0,0,0,0,0'
-te 7 33 34 59 map.tif map_wgs84.tif

Gabriele
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