[GRASS-user] i.landsat.toar comments have only 0 value

[Markus Neteler]

On Mon, Nov 25, 2013 at 11:05 AM, Pekka Hurskainen
<pekka.hurskainen at gmail.com> wrote:
> Hi,
>
> Unless I have missed something obvious, the problem described by Beatrice
> with i.landsat.toar still exists?
>
> I've tried both WinGrass 7.0.svn build 2013-11-24 and WinGrass 6.4.4svn,
> revision 58275 (2013-11-24).

I uploaded a fix on 21 Nov 2013:
http://trac.osgeo.org/grass/changeset/58274/grass/branches/releasebranch_6_4/imagery/i.landsat.toar/landsat_met.c
(likewise for GRASS 6.5 and 7)


> I've tested with a L8 and L5 scene (both with the new metadata file), using
> 'uncorrected' atmospheric correction method. I just chose the sensor type
> and left everything else default.
>
> Both command output (verbose) and r.info print zeros for Earth-sun distance,
> Sun elevation, DN range, Calibration constants, DN to Radiance, ESUN and
> Radiance to Reflectance values.

This sounds strange and should be verified.

> The output files give sensible reflectance values, but can I trust them
> (i.e. the metadata file was read correctly and the right parameters were
> used)? I haven't compared with Linux version.

Which scene do you work with?

Markus