<div dir="ltr"><div class="gmail_default" style="color:rgb(39,78,19)">Hello everyone,</div><div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">I've been trying to do a supervised classification from landsat8 imagery using i.class and then i.maxlik, but I'm getting an error when running i.maxlik saying it can't read the signature file.</div>
<div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">I tested my procedure on the NC sample dataset and I'm getting the same error, I'm using Grass 6.4.2 on Debian Wheezy, installed from the debian repo. Here's the command set:</div>
<div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default"><font color="#274e13" face="courier new, monospace">#Display RGB enhanced map</font></div><div class="gmail_default"><font color="#274e13" face="courier new, monospace">i.landsat.rgb blue=lsat7_2000_10 green=lsat7_2000_20 red=lsat7_2000_30</font><br>
</div><div class="gmail_default"><font color="#274e13" face="courier new, monospace"><div class="gmail_default">d.rgb blue=lsat7_2000_10 green=lsat7_2000_20 red=lsat7_2000_30</div><div class="gmail_default">#"Real color" map</div>
<div class="gmail_default">r.composite red=lsat7_2000_30 green=lsat7_2000_20 blue=lsat7_2000_10 output=lsat7_2000_RGB</div><div class="gmail_default">#Group images to process</div><div class="gmail_default">i.group group=lsat7_2000_RGB subgroup=lsat7_2000_RGB input=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30<br>
</div><div class="gmail_default">#Unsupervised classification</div><div class="gmail_default"><div class="gmail_default">i.cluster group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=clustlsat7 classes=20 report=rep_clust_lsat7.txt</div>
<div class="gmail_default">i.maxlik group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=clustlsat7 class=lsat7_classes reject=lsat7_classes_rej<br></div></div><div class="gmail_default">#Supervised classification</div>
<div class="gmail_default">
<div class="gmail_default">i.class map=lsat7_2000_RGB group=lsat7_2000_RGB subgroup=lsat7_2000_RGB outsig=classlsat7</div><div class="gmail_default">i.maxlik group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=classlsat7 class=lsat7_class_sup<br>
</div></div></font></div><div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">Here I get the error in which i.maxlik can't read the signature file created by i.class (classlsat7) but read the one created by i.cluster flawlessly</div>
<div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">This is what I'm selecting on the i.class monitor, I named it vegetation:</div><div class="gmail_default" style="color:rgb(39,78,19)">
<img src="cid:ii_142951613f84b528" alt="Imagen integrada 1"><br></div><div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">And the contents of the classlsat7 signature file are the following:</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="gmail_default" style="color:rgb(39,78,19);display:inline">
<font face="courier new, monospace"></font></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<font color="#274e13" face="courier new, monospace">#</font></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<font color="#274e13" face="courier new, monospace">#vegetation</font></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<font color="#274e13" face="courier new, monospace">166</font></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div class="gmail_default" style="color:rgb(39,78,19);display:inline"></div><br></blockquote><div class="gmail_default" style="color:rgb(39,78,19)"><br></div><div class="gmail_default" style="color:rgb(39,78,19)">Am I doing something wrong or is it some kind of bug?</div>
<div><br></div>-- <br><div dir="ltr"><div style="text-align:right"><b style="color:rgb(39,78,19)">César Augusto Ramírez Franco</b></div>
<font color="#274e13"><div style="text-align:right">Laboratorio de Sistemas Complejos Naturales</div><span style="font-family:Arial;vertical-align:baseline;white-space:pre-wrap"><div style="text-align:right">Escuela de Geociencias</div>
</span></font><div><div style="text-align:right"><span style="white-space:pre-wrap;font-family:Arial;color:rgb(39,78,19)">Facultad de Ciencias</span></div><font color="#274e13"><div style="text-align:right">Universidad Nacional de Colombia - Sede Medellín</div>
</font></div><font color="#274e13"><div style="text-align:right">Teléfono: (57-4) 430 9369 -<font face="arial, helvetica, sans-serif"> 301 389 5607</font></div></font></div>
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