[Gdal-dev] GTOPO30 and max value

[Markus Neteler]

Hi,

should GDAL read the GTOPO30 data properly?

gdalinfo -mm W100N40.DEM
Driver: EHdr/ESRI .hdr Labelled
Size is 4800, 6000
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        TOWGS84[0,0,0,0,0,0,0],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9108"]],
    AXIS["Lat",NORTH],
    AXIS["Long",EAST],
    AUTHORITY["EPSG","4326"]]
Origin = (-100.000000000000000,39.999999999999993)
Pixel Size = (0.008333333333330,-0.008333333333330)
Corner Coordinates:
Upper Left  (-100.0000000,  40.0000000) (100d 0'0.00"W, 40d 0'0.00"N)
Lower Left  (-100.0000000, -10.0000000) (100d 0'0.00"W, 10d 0'0.00"S)
Upper Right ( -60.0000000,  40.0000000) ( 60d 0'0.00"W, 40d 0'0.00"N)
Lower Right ( -60.0000000, -10.0000000) ( 60d 0'0.00"W, 10d 0'0.00"S)
Center      ( -80.0000000,  15.0000000) ( 80d 0'0.00"W, 15d 0'0.00"N)
Band 1 Block=4800x1 Type=UInt16, ColorInterp=Undefined
  Min=-9999.000 Max=6710.000   Computed Min/Max=1.000,55537.000
  Minimum=-9999.000, Maximum=6710.000, Mean=-6078.800, StdDev=5044.200
  NoData Value=-9999

-> Computed Min/Max=1.000,55537.000
is confusing me. Maybe a bug in the data set?

Markus

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ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
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