| How to read field attributes in HDF-EOS [message #70700] |
Wed, 28 April 2010 20:28  |
dabin
Messages: 1
Registered: April 2010
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Junior Member |
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I'm trying to read attributes 'scale factor' and 'offset' contained
in a hdf-eos data field. But can't find any good method to do this.
Could any one give me some advise.
The attributes information are shown in the following picutre.
file:///C:/Documents%20and%20Settings/dabin/桌面/1.TIF
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| Re: How to read field attributes in HDF-EOS [message #70749 is a reply to message #70700] |
Fri, 30 April 2010 09:53  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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dabin writes:
> I'm trying to read attributes 'scale factor' and 'offset' contained
> in a hdf-eos data field. But can't find any good method to do this.
> Could any one give me some advise.
It seems exceedingly odd to me that to read attributes
from swath datafields, you have to stop what you are doing
and open a new scientific dataset operation, convert
the datafield name to a scientific dataset index, then
parse that for information you need. Too weird!
Anyway, I plan to write an article about this and
incorporate this into my ncdf_browser tool, but who
knows when that will happen. In the interim, I have
put a very preliminary piece of code that parses
HDF-EOS swath data here:
http:/www.dfanning.com/misc/examine_hdf_swath.pro
It might give you some ideas.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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