[gdal-dev] DODS Driver issue

Kyle Shannon kyle at pobox.com
Fri Jun 1 13:51:04 PDT 2012


I am messing around with some opendap weather data and tinkering with gdal.
 Does anyone have any test data/links I can use?  I used gdalinfo to look
at this data:

http://nomads.ncdc.noaa.gov/dods/NCEP_NAM/subsets/nam_218_winds.dds

using:

kyle at ubuntu:~/Desktop$ gdalinfo
http://nomads.ncdc.noaa.gov/dods/NCEP_NAM/subsets/nam_218_winds?ugrd10m[0][y][x]
Driver: DODS/DAP 3.x servers
Files: none associated
Size is 1038, 500
Coordinate System is `'
Origin = (-153.050000000000011,11.949999999999999)
Pixel Size = (0.100000000000000,0.100000000000000)
Corner Coordinates:
Upper Left (-153.0500000, 11.9500000)
Lower Left (-153.0500000, 61.9500000)
Upper Right ( -49.2500000, 11.9500000)
Lower Right ( -49.2500000, 61.9500000)
Center (-101.1500000, 36.9500000)
Band 1 Block=512x128 Type=Float32, ColorInterp=Undefined
NoData Value=9.999e+20
Overviews: 519x250, 259x125, 129x62

and I noticed the origin y values are inverted.  The image 'shows' up in
the right place because the y pixel size is positive, but
adfGeoTransform[3] is wrong.  I am also not getting any data back (all
nodata) but I am not sure if that is me, or the provider.  I am looking for
a link to test the dods driver and see if this is always the case, or if
the data served by nomads is an exception.  Thanks.

kss
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