| georeference or mosaick [message #29328] |
Thu, 14 February 2002 08:33  |
cinthia.loial
Messages: 5
Registered: February 2002
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Junior Member |
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Hi all,
If I georeference or mosaick a multi band image, the result is apply
only on the first band.
(ENVI and IDL)
In my application, the input file is a HDF-EOS file (BSQ)
How can I get these two operations work on all the bands?
In IDL, if I open a HDF-EOS (BSQ) with envi_open_file, I have to
select manually all the bands.
Is there an options to open them all automatically?
Thanks,
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| Re: georeference or mosaick [message #29389 is a reply to message #29328] |
Mon, 18 February 2002 00:34  |
Vincent Schut
Messages: 8
Registered: February 2002
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Junior Member |
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Hi Cinthia,
first do a good look at your ENVI help, go to the 'programmers' section
and check out the procedure you use to open this file. Check for
something to select the band(s). There also might be a seperate routine
to read your kind of hdf file, which does give you more options than the
standard envi_open_data_file routine.
The 'problem' with hdf files often is that every band actually is in a
different file, but that in every file there are 'pointers' to the other
files, making it look like they are other bands in the same file.
Otherwhise, you could try to open each band (means (probably) hdf file)
seperately to do the calculation on each band apart.
btw, I have no experience with hdf-eos data, just with spot vegetation
hdf data. So it could be that this answer does not entiry apply to your
case. You'll have to find out yourself :-)
I hope it is a hint in the right direction for you.
Cheers,
Vincent.
Cinthia wrote:
> Hi all,
>
> If I georeference or mosaick a multi band image, the result is apply
> only on the first band.
> (ENVI and IDL)
> In my application, the input file is a HDF-EOS file (BSQ)
>
> How can I get these two operations work on all the bands?
>
>
> In IDL, if I open a HDF-EOS (BSQ) with envi_open_file, I have to
> select manually all the bands.
> Is there an options to open them all automatically?
>
>
> Thanks,
>
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