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

Hi Giuseppe try to take a look also here, if you find something that can help you http://hdl.handle.net/2434/574065 I tried a combination of i.segment.uspo, i.segment and v.class.mlR (Grippa et al. 2017) to classify an aerial images of Alpine areas. I get low a accuracy in classification

Re: [GRASS-user] r3.in.xyz

Any ideas for this question? On Sun, Jul 1, 2018, 13:27 Francois Chartier, wrote: > Hi, > > > > I am reposting the initial question: > > > > “I am working with a data set that consists of borehole logs with a Top of > a layer (layer 1) and the top of the underlying layer (layer 2) (which is >

[GRASS-user] Finding EPSG code based on prj.adf; importing with v.in.gdal

The ESRI GRID formatted LiDAR raw data file can be imported using r.in.gdal using the appropriately defined location. Running 'gdalinfo | less' on the prj.adf file reports: Coordinate System is: PROJCS["unnamed", GEOGCS["Unknown datum based upon the GRS 1980 ellipsoid",

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

It is good to know about these more sophisticated alternatives for image classification. Nonetheless, if GRASS maintains i.cluster and i.maxlink in the default module distribution, it would be helpful to know why this is not working and/or have some kind of an error/warning message generated. I

Re: [GRASS-user] Importing lat-lon points into projected location [RESOLVED]

On Wed, 4 Jul 2018, Markus Neteler wrote: To which page should this be added? Markus, I didn't provide the URL because it does not point to the specific page: . The specific page is titles, 'GRASS startup program' and that's a link from

[GRASS-user] Importing googleearth image

I would appreciate pointers on using GoogleEarth views in grassu7. I find many URLs on saving points ('places') and routes to .kml files, and on loading .kml files of points and routes to GoogleEarth, but not how to save the viewed image as a georeferenced point vector or raster file. I can

Re: [GRASS-user] Importing lat-lon points into projected location [RESOLVED]

Rich, Rich Shepard schrieb am Mi., 4. Juli 2018, 16:56: > On Wed, 4 Jul 2018, Markus Neteler wrote: > > > Where should we improve the documentation? > > Markus, > >The only improvement I can suggest is with this example (and the > following > one for EPSG:5514:3): > > grass75 -c EPSG:4326

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

On Wed, Jul 4, 2018 at 11:36 AM, Giuseppe Cillis wrote: > > 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.

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

Hi all, you may want to consider topography-driven classification: by that I mean a classification restricted to proper sub-areas; in particular we have explored the use of both rectangular areas and slope units, for the specific purpose of landlisde mapping, in this paper:

Re: [GRASS-user] Importing lat-lon points into projected location [RESOLVED]

On Wed, 4 Jul 2018, Markus Neteler wrote: Where should we improve the documentation? Markus, The only improvement I can suggest is with this example (and the following one for EPSG:5514:3): grass75 -c EPSG:4326 $HOME/grassdata/mylocation Creates new GRASS location with EPSG code 4326

Re: [GRASS-user] Inconsistent number of column in the table

Hi Micha, It worked! I only had to make a minor change to process all inside grass. So for future reference, what I did was: db.execute sql='update solos set horizonte = replace(horizonte, char(10), " ")' I could not use the line break in the db.execute sql statement. But I found that char(10)

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

Hi Giuseppe, On Wed, Jul 4, 2018 at 11:36 AM, Giuseppe Cillis wrote: > 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

[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