<br><br><div class="gmail_quote">2009/6/18 Moritz Lennert <span dir="ltr"><<a href="mailto:mlennert@club.worldonline.be">mlennert@club.worldonline.be</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div></div><div class="h5">On 18/06/09 14:31, maven apache wrote:<br>
> Also I found that I can see only five color from the tiff<br>
> swi.tiff, and yesterday I get five category with the same<br>
> steps(import and composite then calculate ), they are<br>
> "0<br>
> 9321 26425 31744 32736 ";, but today it change to six!!<br>
><br>
> Maybe I remembered it wrongly. (*^__^*)<br>
><br>
><br>
> And acturlly I want to extract each color and export them to a<br>
> vector map, I am looking the proper commond.<br>
><br>
> It seems that there is no corresponding command to achieve this goal£¿<br>
<br>
<br>
</div></div>Please start by reading:<br>
<br>
<a href="http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html" target="_blank">http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html</a><br>
<a href="http://grass.osgeo.org/grass64/manuals/html64_user/vectorintro.html" target="_blank">http://grass.osgeo.org/grass64/manuals/html64_user/vectorintro.html</a><br>
<br>
The command you are looking for is r.to.vect (I see it is not mentioned<br>
in the rasterintro. Should be...).</blockquote><div>It seems that the r.to.vect is to transfer the hole raster map to a vector,but I want to transfer each category to a vector.... </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>
<font color="#888888"><br>
Moritz<br>
</font></blockquote></div><br>