Hi,
I have a geotiff file with lat/lon ranges set to 85S to 85N and -180W to
180E. I was able to read out the lat/lon boundaries in the tif file and
they are 83.632S to 83.632N and 179.813W to 179.813E. The lat/lon values
seem to be the centers of grid boxes. I used the gdal_translate to
convert to kml then display it in GoogleEarth. My problem is there is a
gap towards the end of the data near the dateline. In other words, the
map starts at 180W and stops at about 179.01E, not 180E. Anyone had the
same situation?
Here is the output from my listgeo on the original tif file:
Geotiff_Information:
Version: 1
Key_Revision: 1.0
Tagged_Information:
ModelTiepointTag (2,3):
0 0 0
-17367530.4451649 7314540.64739566 0
ModelPixelScaleTag (1,3):
36032.2208405911 36032.2199379096 0
End_Of_Tags.
Keyed_Information:
GTModelTypeGeoKey (Short,1): ModelTypeProjected
GTRasterTypeGeoKey (Short,1): RasterPixelIsArea
GTCitationGeoKey (Ascii,31): "Cylindrical Equal Area (WGS84)"
GeographicTypeGeoKey (Short,1): GCS_WGS_84
GeogGeodeticDatumGeoKey (Short,1): DatumE_WGS84
GeogLinearUnitsGeoKey (Short,1): Linear_Meter
GeogAngularUnitsGeoKey (Short,1): Angular_Degree
GeogEllipsoidGeoKey (Short,1): Ellipse_WGS_84
GeogSemiMajorAxisGeoKey (Double,1): 6378137
GeogSemiMinorAxisGeoKey (Double,1): 6356752.31424
ProjectedCSTypeGeoKey (Short,1): User-Defined
ProjectionGeoKey (Short,1): User-Defined
ProjCoordTransGeoKey (Short,1): CT_CylindricalEqualArea
ProjLinearUnitsGeoKey (Short,1): Linear_Meter
ProjLinearUnitSizeGeoKey (Double,1): 1
ProjStdParallel1GeoKey (Double,1): 30
End_Of_Keys.
End_Of_Geotiff.
Projection Method: CT_CylindricalEqualArea
ProjStdParallel1GeoKey: 30.000000 ( 30d 0' 0.00"N)
ProjNatOriginLongGeoKey: 0.000000 ( 0d 0' 0.00"E)
ProjFalseEastingGeoKey: 0.000000 m
ProjFalseNorthingGeoKey: 0.000000 m
GCS: 4326/WGS 84
Datum: 6030/(unknown)
Ellipsoid: 7030/WGS 84 (6378137.00,6356752.31)
Prime Meridian: 8901/Greenwich (0.000000/ 0d 0' 0.00"E)
Projection Linear Units: 9001/metre (1.000000m)
Corner Coordinates:
Upper Left (-17367530.445, 7314540.647) (179d60' 0.00"E, 85d 2'40.38"N)
Lower Left (-17367530.445,-7314540.647) (179d60' 0.00"E, 85d 2'40.38"S)
Upper Right (17367530.445, 7314540.647) (179d60' 0.00"W, 85d 2'40.38"N)
Lower Right (17367530.445,-7314540.647) (179d60' 0.00"W, 85d 2'40.38"S)
Center ( 0.000, 0.000) ( 0d 0' 0.00"E, 0d 0' 0.00"N)
Thank you.
Jianfu
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