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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks, Jiao!! This helps a lot!!!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Pedro<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Jiao Wang [mailto:jiao@hawaii.edu] <br><b>Sent:</b> Tuesday, January 28, 2014 1:02 PM<br><b>To:</b> Pedro Camargo<br><b>Cc:</b> GRASS user list<br><b>Subject:</b> Re: [GRASS-user] Processing NAIP images<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi Pedro,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I did a test run and created an unsupervised classification image.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Here are the steps I did:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>1 MrSID to tiff in QGIS<o:p></o:p></p></div><div><p class=MsoNormal>2 import tiff in GRASS (i.in.gdal)<o:p></o:p></p></div><div><p class=MsoNormal>3 create group and subgroup (i.group ---check "Define also sub-group(same name as group)"--- in the "Layers in selected group" keep one band file as described in i.cluster manual)<o:p></o:p></p></div><div><p class=MsoNormal>4 classification --signature(i.cluster)<o:p></o:p></p></div><div><p class=MsoNormal>5 classification--map (i.maxlik)<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Hope it helps.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Best,<o:p></o:p></p></div><div><p class=MsoNormal>Jiao<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Tue, Jan 28, 2014 at 9:00 AM, Pedro Camargo <<a href="mailto:veigacamargo@gmail.com" target="_blank">veigacamargo@gmail.com</a>> wrote:<o:p></o:p></p><div><div><div><div><div><div><div><p class=MsoNormal>Hi,<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'> I am trying to generate land use maps (looking to identify roadways only, actually) using NAIP imagery.<br><br> Since I am using the pre-compiled GRASS, I do not have MrSID inside GRASS, so converted the images to TIFF using QGIS.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'> I believe I can use i.maxlik or something like that, but I do not know how to start. It keeps asking for groups, but I do not know what is a group image.<o:p></o:p></p></div><p class=MsoNormal> <o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'> I googled a lot on this and looked into several tutorials, but still did not figure out how to start this. I have been educating myself through a few papers, but I guess I still need to find a good summarized tutorial on how to do this with multi band images such as NAIP.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Does anybody have ideas to help?<o:p></o:p></p></div><p class=MsoNormal>Thanks,<br><br>Pedro<o:p></o:p></p></div><p class=MsoNormal><br>_______________________________________________<br>grass-user mailing list<br><a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><br><a href="http://lists.osgeo.org/mailman/listinfo/grass-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/grass-user</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>