user defined datum results in different ways between envi 4.3 and

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Last Post 27 Feb 2009 07:39 AM by anon

user defined datum results in different ways between envi 4.3 and 4.5

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anon

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27 Feb 2009 07:39 AM
I try to define my own datum for my works with Envi. But V4.3 and V4.5 give me different results. I add my own datum into ellipse.txt and datum.txt . Envi 4.3 failed in writing and reading the user defined datum into the Geotiff header, but Envi 4.5 succeed. Why? Who knows?

MariM

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Posts:2396
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27 Feb 2009 08:00 AM
What datum was used? In what way did it fail in ENVI 4.3? If you save the file to ENVI format, does the datum get written?

Deleted User

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27 Feb 2009 07:34 PM
If using Envi's own format, I can find the datum info in the .hdr file, but saving it as Geotiff, Envi 4.3 can not write and read the datum info into the refered Geotiff tags.But Envi 4.5 can. And the user defined datum adding into ellipse.txt and datum.txt .

MariM

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Posts:2396
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02 Mar 2009 08:07 AM
If it is 'User Defined' then it was likely that it was not yet supported in 4.3. They might have added support for this in 4.5.

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