[GRASS-user] i.spec.unmix - scale results to 0-100%

[Markus Neteler]

On Fri, Nov 3, 2017 at 11:10 AM, Žofie Cimburová
<zoficimburova at gmail.com> wrote:
> Hi,
> I am using i.spec.unmix for spectral unmixing of Sentinel-2 imagery. I
> define 6 endmembers and the results look pretty fine, but when I add the
> output maps up, they don't sum up to 100%, but rather anything from 23 till
> 67...
> I tried to linearly scale the output maps to 0-100% and then add them up,
> but this does not sum up to 100% either.
> In the manual there is a small comment "# todo: reclass to 0..100%".

There was a change for this but probably not catching the problem:

On Tue, Jul 4, 2017 at 10:53 PM,  <svn_grass at osgeo.org> wrote:
> Author: ychemin
> Date: 2017-07-04 13:53:58 -0700 (Tue, 04 Jul 2017)
> New Revision: 71240
>
> Modified:
>    grass-addons/grass7/imagery/i.spec.unmix/main.c
> Log:
> trying to rescale from 0-256 to 0-100, with according colour scheme



> How do I perform the reclassification manually?

Probably
https://grass.osgeo.org/grass72/manuals/r.rescale.html
but it would be better to get the Addon completed.

Best
Markus