[Gdal-dev] Geotiff format interpretation

[Frank Warmerdam]

mattia wrote:
>     UNIT["metre",1,
>         AUTHORITY["EPSG","9001"]]]
> Origin = (8912408.472916,7090227.412053)
> Pixel Size = (694.49452741,-1000.15538912)
> Corner Coordinates:
> Upper Left  ( 8912408.473, 7090227.412) ( 80d 9'4.51"E, 63d45'50.32"N)
> Lower Left  ( 8912408.473, 3142614.091) ( 80d 9'4.51"E, 28d15'43.99"N)
> Upper Right (13845403.101, 7090227.412) (124d30'53.14"E, 63d45'50.32"N)
> Lower Right (13845403.101, 3142614.091) (124d30' 53.14"E, 28d15'43.99"N)
> Center      (11378905.787, 5116420.752) (102d19'58.82"E, 46d 0'47.16"N)
> Band 1 Block=7103x20 Type=Byte, ColorInterp=Red
> Band 2 Block=7103x20 Type=Byte, ColorInterp=Green
> Band 3 Block=7103x20 Type=Byte, ColorInterp=Blue
> 
> 
> Now, I dont know what the EPSG 9001 system is and I cannot manage to 
> google it successfully..

Mattia,

EPSG:9001 is the EPSG code for the linear unit "Meter".

> I need to convert the given corner coordinates into WGS-84 easting 
> northin decimals..

You can convert the WGS84 values into decimal form yourself if you want.

eg.

the north edge would be:

   63d45'50.32"N
= 63 + 45/60.0 + 50.32/3600.0
= 63.7639777777N

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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