Hello Micha,<br><br>I put <a href="http://r.info/" target="_blank">r.info</a> -r amostras<br>as sugested, get the following:<br>min=112<br>max=512<br><br>(This values are index to my classes.)<br><br>JD<br><br><div class="gmail_quote">
On Tue, Apr 6, 2010 at 4:39 PM, Micha Silver <span dir="ltr"><<a href="mailto:micha@arava.co.il">micha@arava.co.il</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">Nikos Alexandris wrote:<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
(sorry for re-sorting the message, just to keep it easy to follow-up)<br>
<br>
joel dinis:<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> I trying to classify remote sensing imagery, and<br>
> I thought to try the i.smap module, but<br>
> when I run the i.gensigset,<br>
<br>
</blockquote>
<br>
Nikos Alexandris:<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Please, could you copy-paste the exact command you used?<br>
Does the "maxsig=" (e.g. maxsig=20) make any difference?<br>
<br>
</blockquote>
<br>
joel dinis:<br>
<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
In fact, I put maxsig=30.<br>
i.gensigset trainingmap=amostras group=grupo subgroup=subgrupo<br>
signaturefile=assinaturas maxsig=30<br>
<br>
</blockquote>
<br>
What about smaller maxsig's, like:<br>
<br>
- maxsig=25<br>
- maxsig=20<br>
- maxsig=15<br>
<br>
?<br>
<br>
Nikos<br>
<br>
<br>
</blockquote></div>
Also it might help to know what is contained in the trainingmap. i.e:<br>
<a href="http://r.info" target="_blank">r.info</a> -r amostras<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> I always<br>
> get the same problem:<br>
> ...<br>
> Removed a singular subsignature number 1 (9 remain)<br>
> Removed a singular subsignature number 1 (8 remain)<br>
> Removed a singular subsignature number 1 (7 remain)<br>
> Removed a singular subsignature number 1 (6 remain)<br>
> Removed a singular subsignature number 1 (5 remain)<br>
> Removed a singular subsignature number 1 (4 remain)<br>
> Removed a singular subsignature number 1 (3 remain)<br>
> Removed a singular subsignature number 1 (2 remain)<br>
> Removed a singular subsignature number 1 (1 remain)<br>
> Unreliable clustering. Try a smaller initial number of<br>
clusters<br>
> Removed a singular subsignature number 1 (-1 remain)<br>
> Unreliable clustering. Try a smaller initial number of<br>
clusters<br>
> Number of subclasses is 0<br>
> Clustering class 12 (184 pixels)...<br>
> Removed a singular subsignature number 1 (9 remain)<br>
> Removed a singular subsignature number 1 (8 remain)<br>
> Removed a singular subsignature number 1 (7 remain)<br>
> Removed a singular subsignature number 1 (6 remain)<br>
> Removed a singular subsignature number 1 (5 remain)<br>
> Removed a singular subsignature number 1 (4 remain)<br>
> Removed a singular subsignature number 1 (3 remain)<br>
> Removed a singular subsignature number 1 (2 remain)<br>
> Removed a singular subsignature number 1 (1 remain)<br>
> Unreliable clustering. Try a smaller initial number of<br>
clusters<br>
> Removed a singular subsignature number 1 (-1 remain)<br>
> Unreliable clustering. Try a smaller initial number of<br>
clusters<br>
> Number of subclasses is 0<br>
> i.gensigset complete.<br>
><br>
> And afterwards the signature file doesn't have any<br>
> spectral information. I really don't understand whats<br>
happening<br>
> and the cause to this outcome.<br>
><br>
> Can anyone solve this "enigma"?<br>
><br>
> Ps: I don't know if this information is important: I<br>
collected<br>
> about 450 samples distributed by 10 classes. I may also<br>
> add that the average number of pixels per sample is around<br>
50.<br>
><br>
> And thanks list, for the previous tips: they were very<br>
useful.<br>
<br>
</blockquote>
<br>
<br>
<br></div></div>
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<br>
</blockquote>
<br>
<br>
-- <br>
Micha Silver<br>
Arava Development Co. +972-52-3665918<br>
<a href="http://www.surfaces.co.il" target="_blank">http://www.surfaces.co.il</a><br>
<br>
<br>
</blockquote></div><br>