Thanks, Jiao!! This helps a lot!!!
Pedro From: Jiao Wang [mailto:[email protected]] Sent: Tuesday, January 28, 2014 1:02 PM To: Pedro Camargo Cc: GRASS user list Subject: Re: [GRASS-user] Processing NAIP images Hi Pedro, I did a test run and created an unsupervised classification image. Here are the steps I did: 1 MrSID to tiff in QGIS 2 import tiff in GRASS (i.in.gdal) 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) 4 classification --signature(i.cluster) 5 classification--map (i.maxlik) Hope it helps. Best, Jiao On Tue, Jan 28, 2014 at 9:00 AM, Pedro Camargo <[email protected]> wrote: Hi, I am trying to generate land use maps (looking to identify roadways only, actually) using NAIP imagery. Since I am using the pre-compiled GRASS, I do not have MrSID inside GRASS, so converted the images to TIFF using QGIS. 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. 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. Does anybody have ideas to help? Thanks, Pedro _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
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