[GRASS-user] Signature not invertible

Hello list, I'm with a problem running the i.gensig. I do: i.gensig trainingmap=areasras...@portugal_9 group=gr...@portugal_9subgroup=subgrupo signaturefile=assinaturascomareas where areasrastes has 4 classes. The *r.stats -c input=areasras...@portugal_9* is 1 92 2 234 3 2434 4 3016 * 287024

[GRASS-user] Stratified sampling in GRASS

Hello to all, I'm trying to do a stratified sampling in GRASS, and I found nothing in GRASS about it. Does anyone knows how to do it? Thank in advance JD ___ grass-user mailing list grass-user@lists.osgeo.org

[GRASS-user] Problems with i.pr (II)

Hello to all, I've just install the i.pr, but there is several problems with it, mainly with the i.pr.training module. 1) There is no manual, so I can only guess I each input parameter really is. I've send a mail asking for information about i.pr, but aparently is scarce. 2) When I try to use

[GRASS-user] Difficulties with i.pr

Hello to all, Does anyone knows any working example of the i.pr add-on? I have install it, and I'm having some problems with the i.pr.training. I do: i.pr.training map=lis...@p9,lis...@p9,lis...@p9,lis...@p9 training=iprteste9 vector=area1 rows=3 cols=3 class=0 And the iprteste9 only has this:

Re: [GRASS-user] Difficulties with i.pr

. Is your vector file a point or polygon? I tested i.pr.training with points. You might get some ideas from this thread: http://www.mail-archive.com/grass-user@lists.osgeo.org/msg00153.html Regards, Daniel. joel dinis wrote: Hello to all, Does anyone knows any working example

[GRASS-user] A problem with i.gensigset.

Hello to all, I trying to classify remote sensing imagery, and I thought to try the i.smap module, but when I run the i.gensigset, I always get the same problem: ... Removed a singular subsignature number 1 (9 remain) Removed a singular subsignature number 1 (8 remain) Removed a singular

Re: [GRASS-user] A problem with i.gensigset.

Hello Nikos, In fact, I put maxsig=30. i.gensigset trainingmap=amostras group=grupo subgroup=subgrupo signaturefile=assinaturas maxsig=30 JD On Tue, Apr 6, 2010 at 4:04 PM, Nikos Alexandris nikos.alexand...@felis.uni-freiburg.de wrote: joel dinis wrote: I trying to classify remote sensing

Re: [GRASS-user] A problem with i.gensigset.

the classes... Maybe is something prior to the i.gensigset run. I'll investigate. On Tue, Apr 6, 2010 at 4:33 PM, Nikos Alexandris nikos.alexand...@felis.uni-freiburg.de wrote: (sorry for re-sorting the message, just to keep it easy to follow-up) joel dinis: I trying to classify

Re: [GRASS-user] A problem with i.gensigset.

-up) joel dinis: I trying to classify remote sensing imagery, and I thought to try the i.smap module, but when I run the i.gensigset, Nikos Alexandris: Please, could you copy-paste the exact command you used? Does the maxsig= (e.g. maxsig=20) make

Re: [GRASS-user] A problem with i.gensigset.

PM, Micha Silver mi...@arava.co.il wrote: joel dinis wrote: Hello Micha, I put r.info http://r.info/ -r amostras as sugested, get the following: min=112 max=512 So, if I understand correctly, you are trying to classify into 400 separate classes?! I'm a beginner with image

[GRASS-user] Raster stack with more than 3 rasters

Hello to all, I'm currently working multi-temporal LISS imagery and I intent to make a raster stack with 10 raster files to test a method. With GRASS, I know that is possible to make a stack with 3 rasters, but it's possible to do it with more than 3? Thanks JD

[GRASS-user] contour line algorithm

Hello to all, does anyone knows what kind of algorithm is implemented in the r.contour? It is the marching squares? JD ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] contour line algorithm

Thanks Hamish. On Mon, Mar 29, 2010 at 9:17 PM, Hamish hamis...@yahoo.com wrote: Joel: does anyone knows what kind of algorithm is implemented in the r.contour? It is the marching squares? see https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.contour/README Hamish

[GRASS-user] Can't install i.pr

Hello fellow GRASS users, I'm new with GRASS. At this point, I need to install the i.pr add-on, but I've met some dificulties: I download the package via svn, and that went just fine. But when I do make MODULE_TOPDIR=/usr/lib/grass64 I get this a huge stream of errors and warnings, e.g.

[GRASS-user] Image segmentation á-la eCognition

Hello fellow GRASS users, Can anyone tell if is possible to do image segmentation, like eCognition or SPRING, in GRASS. I did some reasearch, but I couldn't find anything about it. Thank you ___ grass-user mailing list grass-user@lists.osgeo.org