[GRASS-dev] i.atcorr returns nan for Landsat 5 TM bands 1 and 2, and also for RapidEye bands 4 and 5

[Alessandro Samuel Rosa]

Dear Grass developers,

In a previous message I mentioned that the i.atcorr module returns nan
values for Landsat 5 TM bands 1 and 2. Today I was processing some
RapidEye images and found out that i.atcorr fails to process bands 4 and
5. Notice that when I processed this bands as if they were band 1,
i.atcorr returned the expected result. This means that there is nothing
wrong with the image files.

I hope that the Fortran source code that I shared with you has the
answers to solve this issue.

Regards,

Alessandro

On wo, 2014-03-05 at 11:32 +0100, Markus Neteler wrote:

> On Thu, Feb 27, 2014 at 8:40 PM, Alessandro Samuel Rosa
> <alessandrosamuel at yahoo.com.br> wrote:
> ...
> > I also tried contacting Mauro Antunes, the author of the original code in Fortran. He was my teacher, so I have a close relation with him. I asked him if he was interested in taking a look at the C++ code implemented in GRASS, but he is not willing to do it. He has been working on the Fortran code during the last years and provided me with a copy. Using his Fortran code and the same input file that I used for i.atcorr gave the expected results.
> 
> Would the Fortran code author make his latest version available? Then
> we might be able to compare the implementations.
> 
> Markus


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