On Fri, Jan 12, 2018 at 10:42 AM, Markus Metz <markus.metz.gisw...@gmail.com> wrote: > On Fri, Jan 12, 2018 at 8:58 AM, Markus Neteler <nete...@osgeo.org> wrote: ... > The spectral filter functions for RapidEye in i.atcorr are strange. E.g. > band 2 (green) is supposed to cover the range 520 - 590 nm, but in iwave.cpp > this band covers the range 424 - 876 nm. Further on, the file rapideye.csv > and the values in IWave::rapideye() do not match, a lot of 0.001 values have > been inserted where there should be zero. In rapideye.csv, there are gaps in > filter functions, e.g. for green from 598 to 763 nm, then again from 773 to > 876 nm. In the range 424 - 508 nm, there are also a few small blocks with > values > 0 separated by large blocks of missing values.
This is the source which was used: https://resa.planet.com/files/2014-06/Spectral_Response_Curves.pdf Maybe something went wrong? markusN > In short, there are too many too small values in the rapideye filter > functions, causing numerical instability. This could be fixed upon > initialization. > > Markus M _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-dev
