[GRASS-user] Importing DMSP-OLS in an Lat-Lon based Location

Nikos Alexandris nik at nikosalexandris.net
Sat Feb 14 02:41:28 PST 2015


Hi users.

What is exactly wrong when importing imagery from 
<http://ngdc.noaa.gov/eog/dmsp/downloadV4composites.html> in a GRASS 
LL-based Location?

gdalinfo for one image reports:

Upper Left  (-180.0041667,  75.0041667) (180d 0'15.00"W, 75d 0'15.00"N)
Lower Left  (-180.0041667, -65.0041661) (180d 0'15.00"W, 65d 0'15.00"S)
Upper Right ( 180.0041652,  75.0041667) (180d 0'14.99"E, 75d 0'15.00"N)
Lower Right ( 180.0041652, -65.0041661) (180d 0'14.99"E, 65d 0'15.00"S)
Center      (  -0.0000007,   5.0000003) (  0d 0' 0.00"W,  5d 0' 0.00"N)

while the created Location, based on this image reports:

n=75.0041666666667
s=-65.0041661066667
w=179.995833333333
e=180.004165226667
nsres=0.00833333330000198
ewres=1.92863436804174e-07
rows=16801
cols=43201
cells=725820001


I can't draw any maps.  Is this related/similar to the problem solved 
for ETOPO1 here: 
<http://grasswiki.osgeo.org/wiki/Global_datasets#ETOPO1_.28DEM.29>?

Thanks, Nikos


-- 
Nikos


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