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<p><font size="+1">Hi:</font></p>
<br>
<p><font size="+1">The interactive supervised classification allows
you to draw, by hand, polygons covering pixels of classes that
you want to use in your classification. The scatterplot preview,
like the histogram, is just for understanding how correlated two
specific bands are, for use in preparing those polygon training
areas. Once you have prepared the polygon classes, you can save
that vector to GRASS (the "Export training areas to map"
button), then you run the (first step) in the classification
process: creating the signature file. After the process finishes
You must save the signature file (the next button on the
toolbar) for use as input to the i.maxlik module (second step)
to actually do the classification.</font></p>
<p><font size="+1"><br>
</font></p>
<p><font size="+1">So it's not clear what you "want to export from
ROI"?</font></p>
<p><font size="+1"><br>
</font></p>
<p><font size="+1">Perhaps if you explain what is your final goal,
it might be easier for someone to help. There's plenty of
documentation on image classification that explains the
procedure, for example, did you find this wiki page:</font></p>
<p><font size="+1"><a class="moz-txt-link-freetext" href="https://grasswiki.osgeo.org/wiki/Image_classification">https://grasswiki.osgeo.org/wiki/Image_classification</a></font></p>
<p><font size="+1"></font><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 1/4/21 7:00 AM, mega saputra wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPCs1vcwzZmnhdod14v3YvtT0kTv0=KjoQ59ETP4tuQSzq5CuQ@mail.gmail.com">
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<div>Hello guys,</div>
<div><br>
</div>
<div>I create ROI from scatter plot using Interactive input for
supervised classification. I want to export data from ROI.
But, I don't find the menu or tool in Grass. <br>
</div>
<div>Could someone tell me the tool or menu in Grass?</div>
<div><br>
</div>
<div>Regards, <br>
</div>
<div>mega<br>
</div>
</div>
<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918</pre>
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