Re: [GRASS-user] Problem with v.class.mIR

No one can help me? GC Il giorno mer 20 nov 2019 alle ore 14:06 Giuseppe Cillis < giucil...@gmail.com> ha scritto: > Thanks for the answer. > > *v.class.mlR segments_map=gbbb@PERMANENT training_map=tainning@PERMANENT > train_class_column=fd output_class_column=vote outpu

[GRASS-user] how to install some addons

Hi, I have problems in finding and installing some addons on my grass 7.8. In particular: i.ortho.target, i.ortho.elev, i.ortho.camera, i.ortho.init, i.ortho.rectify. I hope the question is not stupid... I'm just starting out with grass! Thanks Giuseppe

Re: [GRASS-user] Problem with v.class.mIR

:18 Moritz Lennert < mlenn...@club.worldonline.be> ha scritto: > On 20/11/19 11:55, Giuseppe Cillis wrote: > > Hi, > > I'm trying to use this module for classification of an old aerial photos. > > After a segmentation (i.segment and i.segment.stats), I would t

[GRASS-user] Problem with v.class.mIR

Hi, I'm trying to use this module for classification of an old aerial photos. After a segmentation (i.segment and i.segment.stats), I would to use a machine learning approach for the real classification. I tried with v.class.mIR which use also R. But there is an error and I don't know how to solve

[GRASS-user] Semi-automatic classification of old thematic map

Dear all, I would like to classify in a semi-automatic way, an old scanned thematic map of land use. The different classes of land use are represented by polygons of different colors. Which module can I use to identify the different land use classes? Thanks GC

[GRASS-user] remove sliver polygons and dissolving adjacent ones

Dear all, First, I would like all polygons with area less than, for example, 100 squaremeters, to be joined to adjacent ones with a larger area. There is a module linked to the polygons sliver, right? Finally, the thing to which I just can not give a solution. I would like to "merge/dissolve" just

Re: [GRASS-user] i.maxlik problem

I solved with the synthetic channels generation. Thanks GC Il giorno mer 19 set 2018 alle ore 22:39 Markus Neteler ha scritto: > On Wed, Sep 19, 2018 at 12:43 PM Giuseppe Cillis > wrote: > > > > Thanks for the message, > > but when I try to run i.cluster with jus

Re: [GRASS-user] i.maxlik problem

Thanks for the message, but when I try to run i.cluster with just one raster, the module doesn't work because: " subgroup need two images" . GC Il giorno mar 18 set 2018 alle ore 21:34 Markus Metz < markus.metz.gisw...@gmail.com> ha scritto: > > > On Tue, Sep 18, 2018 a

[GRASS-user] i.maxlik problem

Hi, I am in the first experiences with GRASS and I have a problem with the i.maxlik module. I have to semi-automatically classify two orthophotos already geo-referenced and rectified. As a first operation, I create a group and a subgroup in which I put the two orthophotos. Next, I create a

Re: [GRASS-user] Semi-automatic classification with GRASS modules

Thanks you for the answers! The aerial photos classification is a common problem. In particular when there is a need to classify small elements. I have alway done a manual classification but now I need to eleborate many photos to distinguish the forest from the agricultural areas. So, I will try

[GRASS-user] Semi-automatic classification with GRASS modules

Hello everyone, I'm applying between QGIS and GRASS to apply a semi-automatic classification of aerial photos. In practice I would like to use the combination of the grass modules in the processing of QGIS; i.cluster and i.maxlink. My problem is that with i.cluster I can not create the "spectral