[GRASS-user] Spectral Unmixing

[Mohammed Rashad]

Thanks. I am glad that results looks fine. BTW, I have write access to
grass addons svn. So Can I commit the code by myself ?

If so I will do it by monday evening. I had sent another mail to you

i.spec.unmix [new output]

And for the record it has been ported to grass7 today.


see more info below.


*i.spec.unmix group=group2 at landsat result=res error=err iter=iter
matrix=/home/rashad/dev/sample/spectrum.dat*

Dataset: *nc_spm_08*
Mapset: *landsat*

group2 at landsat
*-------------*
*<lsat5_1987_10 at landsat>    <lsat5_1987_20 at landsat>    *
*<lsat5_1987_30 at landsat>    <lsat5_1987_40 at landsat>    *
*<lsat5_1987_50 at landsat>    <lsat5_1987_60 at landsat>    *
*-------------*


*Output Files(created):*
Results: res.1, res.2, res.3, res.4
Iteration: iter
Error: err

I hope results are pretty much similar here

*Attached Files*

res.1png screenshot of raster map (res.1)
will attach screenshot of other outputs maps if needed


On Fri, Nov 30, 2012 at 7:42 PM, Markus Neteler <neteler at osgeo.org> wrote:

> hi Rashad,
>
> On Thu, Nov 29, 2012 at 7:52 PM, Mohammed Rashad
> <mohammedrashadkm at gmail.com> wrote:
> > I am getting some output from i.spec.unmix which uses gmath and some data
> > structures from meschach
> >
> > Please find below screenshot and notes of the spectral unmixing output.
> >
> > Could you please verify it and let me know.
>
> this looks really very promising!
>
> Of course the results depend a lot on the input spectra which are
> sometimes not easy to obtain. You need to identify pure pixels
> which one can find the the corners of the PCA featurespace. When
> time, I can translate my German instructions to English.
>
> > Code works in grass 6.4(release), grass 6.5(grass6_devel), grass
> > 6.3(release)
>
> Wonderful.
> For the GRASS 6 version, could you please update or patch against
> grass-addons/grass6/imagery/i.spec.unmix/
> ?
>
> > If outputs are fine I will port to grass7
>
> Great!
>
> Thanks for your hard work,
> Markus
>



-- 
Regards,
   Rashad
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