| Re: Landsat Image weirdness - IDL off topic [message #65695 is a reply to message #65694] |
Mon, 16 March 2009 14:00  |
Jean H.
Messages: 472
Registered: July 2006
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Senior Member |
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Jean H. wrote:
> Hi all,
>
> Not too sure where to ask this question... hopefully someone here will
> know!
>
> Ok, I have downloaded a Landsat 7 ETM+ image from USGS (by the way,
> their new service, with free historical images is awesome!!)
>
> ... but it doesn't look as I hoped it would.. have a look here:
> http://www.environmentalmodelers.com/WP/sat_img_problem.gif
>
> Basically, I have, perpendicular to the fly path, some black lines.
> These lines are not present along the central line of the image, and the
> further you are from this center line, the wider are the black lines.
>
> Also, on the edge of the image, I can see some data extensions, which
> surprises me even more!
>
> So, is there anything I can do about this? (I guess it is not an Endian
> problem as the rest of the image looks good, it's not a data type
> problem either, not a band interleave pb as it is a single band)
>
> Thanks a lot!
> Jean
ok, it's "gap data",areas that fall between ETM+ scans... it seems that
filling data should be available... do you know where I can download
the fill-in data if I have the scene number?
Thanks again,
Jean
PS: sorry for finding out the source of my problem 5 seconds after
sending this email... that must be a murphy's law!
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