| Re: how to composite a mapcoord object using geographic coordinate(no projection) [message #87751 is a reply to message #87713] |
Wed, 26 February 2014 00:39   |
Jie Zhou
Messages: 27
Registered: February 2014
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Junior Member |
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On Tuesday, February 25, 2014 2:26:21 PM UTC+1, David Fanning wrote:
> Yngvar Larsen writes:
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>> These files are indeed TIFF 6.0 conformant, but the information in them do not contain enough GeoTIFF tags to have a uniquely defined grid without external information. Thus, you need ugly special cases in your GeoTIFF reader to handle this. Or a specific reader for each. I did the latter for SRTM tiles, which only contain "ModelPixelScaleTag" and "ModelTiepointTag", but no info on the coordinate system.
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> Thanks for such a detailed explanation. Very helpful.
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> Cheers,
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> David
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> --
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> David Fanning, Ph.D.
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> Fanning Software Consulting, Inc.
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> Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
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> Sepore ma de ni thue. ("Perhaps thou speakest truth.")
Dear David,
Will you rewrite the code for GEOCOORD to support the Geographic projection?
Jie
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