Thanks Moritz, I couldn't find r.composite :working:..too much work. As far as the 6.4, I'm looking forward to giving it a shot.
Thanks again, mitch Moritz Lennert wrote: > > On 18/02/09 17:17, mitch_TX wrote: >> Hi community, >> >> This semester I'm teaching an Intro Remote Sensing course using >> commercial >> softwares. Since I'm a free spirit, my goal at the end of the semester is >> to >> show the students that everything could be done using GRASS rather than >> Envi,Erdas or Idrisi. >> Given the fact that they are familiar with GUIs, I'd like to use >> “graphical” >> commands as much as possible (I don't want to scare them) >> >> I have a few questions: >> >> How do I actually save a color composite image as a raster? I know how to >> create it and visualize it >> (GUI: Add RGB or HIS layer → I choose the bands → Display active layer on >> the Map Display) >> (Command: d.rgb red=lsat5_1987...@landsat green=lsat5_1987...@landsat >> blue=lsat5_1987...@landsat -o) >> ...but I don't know how to save it, say, to use it as a base image to >> draw >> ground truth for a supervised classification. > > r.composite > (Raster->Manage map colors->Create RGB) > >> >> >> The other question is something that has been getting me crazy for a >> couple >> of days: classifications. > > [...] > >> Is this a bug or am I “the bug” :-) ?? >> I know that if the command line works, you all may not “see what the >> problem >> is”? But as I said I'd like to use the GUI. > > There were issues in 6.3 with the GUI appending @MAPSET to names whereas > the i.* commands couldn't deal with such names. This was corrected since > (but probably after 6.3 came out). You might want to try with 6.4 (IIUC, > there should be a Lenny package available in the gfoss.it repository > soon). > >> >> >> Let's try with the Supervised using the group and sub-group that worked >> before: >> (GUI: Imagery → Classify image → Interactive input for supervised >> classifications) >> >> i.class window, say I want to use the NIR band to draw my truths: >> >> lsat5_1987_40 >> (good) >> >> group >> lsat_try (the group that worked before) >> (good) >> >> sub (if I type list to see the available sub-groups I get: no subgruop >> available in the current mapset) >> >> the same happens if I create a group and sub in the user mapset using the >> copied images. >> >> What am I doing wrong? :,( > > Can't help you on this one, but maybe same issue of file naming ? > > Moritz > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > > -- View this message in context: http://n2.nabble.com/Long-post---Remote-Sensing---Classifications-tp2347807p2348306.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
