[GRASS-dev] i.atcorr / NULL values / RapidEye

peter.loewe at gmx.de peter.loewe at gmx.de
Fri Dec 23 09:18:27 EST 2011

Hi all,

I'm using GRASS6.4/6.5 (built from SVN) to apply i.atcorr on RapidEye data sets (multispectral optical satellite data).
In several cases i.atcorr produces reasonable results for some bands (of L3A and L1B image products), but not for other band os the same data set - for the latter, the result consists entirely of NULL values.
[e.g. in one example the green image band fills up with NULL while the other bands are fine, in other cases only the bands above red are affected, etc]

The preprocessing for both "sane" and "NULL" image bands is the same,all radiance bands appear normal and within reasonable value ranges.

i.atcorr doesn't throw any errors in high verbosity mode (--v).

NULL results have been previously discussed - any suggestions how to continue testing to locate the bug/feature ?

Happy holidays,
Dr. Peter Löwe
<peter.loewe at gmx.de>

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