Hi, On Fri, Nov 3, 2017 at 5:06 PM, Markus Neteler <[email protected]> wrote:
> On Fri, Nov 3, 2017 at 11:10 AM, Žofie Cimburová > <[email protected]> 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, <[email protected]> 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. > This does not solve my problem - the output maps are not scaled to 0-255. The ranges of my output maps are e.g. Map 1-water: 0-34, Map 2-builtup: 0-65, Map 3-forest:0-13, .... I tried to r.rescale each map to 0-100, but they then don't sum up to 100 either. Is there probably different scaling for each output map? Or how else can I interpret the results if not in form of ratios? Thanks, Zofie
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