[GRASS-user] How to convert multi-bands clusters in a vectorial

[Monica Buescu]

Hi there


>
>
> > I have used an external tool to produce clusters from Landsat images. For
> > each input bands, I obtain clusters with a desginated value (mean of the
> > values in that cluster). So, if I use 4 bands, I obtained 4 outputs with
> > clusters. in each image I obtain the same clusters but with different
> values
> > (depends on pixel values).
>
> How did you do this? (which commands)?
>
> I have used an external tool based on Segmentation paper. (coded in C++).


> > What I want to obtain is a single map (raster or
> > vectorial) with all clusters. in GRASS, how can I "merge" this 4 bands in
> > order to obtain a labeled product? it can be a single raster or vectorial
> > but it has to be a single band/layer...
>
>
> Yes please :)
>
>
Eheheeh here goes :)
I have 4 bands and in each one pixel values are calculated based on band
cluster mean. I mean, pixels included in a certain cluster, are all with the
same value that correspond with average of pixels included in the same
cluster. This happens in all 4 bands. What I want is to merge 4 bands in a
single one in which I will have labeled clusters with an integer
(1,2,3,4,5...) isntead of pixel mean.

How can I do this merge?

Thanks Monica
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