Re: [GRASS-user] Vector to 2D Raster

Thanks – I will try and let you know the results. Sent from Mail for Windows 10 From: Markus Neteler Sent: May 8, 2018 5:42 PM To: Andrea Balotti Cc: GRASS user list Subject: Re: [GRASS-user] Vector to 2D Raster On Tue, May 8, 2018 at 5:47 PM, wrote: > > Hi Francois, > >

Re: [GRASS-user] Vector to 2D Raster

On Tue, May 8, 2018 at 5:47 PM, wrote: > > Hi Francois, > > I think you can use directly v.vol.rst directly on a 3D vector (v.in.ascii > with -z flag) to interpolate the points and obtain the 3D raster. Good hint - I have added above to this section:

Re: [GRASS-user] To import from or to link to data stored in a PostgreSQL data base?

On Tue, May 8, 2018 at 4:01 PM, Nikos Alexandris wrote: > > Dears, > > the following concerns an update of an existing workflow, part of which > is GRASS GIS, that makes use of a large PostgreSQL data base which does > not reside locally. > > > The original data set

Re: [GRASS-user] To import from or to link to data stored in a PostgreSQL data base?

Hei Nikos, What about using gdal_rasterize and then r.external output=MASK? Cheers Stefan From: grass-user on behalf of Nikos Alexandris Sent: Tuesday, May 8, 2018 4:01:14 PM To: GRASS-GIS user

Re: [GRASS-user] Vector to 2D Raster

Hi Francois, I think you can use directly v.vol.rst directly on a 3D vector (v.in.ascii with -z flag) to interpolate the points and obtain the 3D raster. Cheers, Andrea Balotti Il 08/05/2018 02:26, Francois Chartier ha scritto: Hi, I am trying to build a Raster out of a vector file

Re: [GRASS-user] Clustering process in i.segment

Thanks for your explanation Marcus. It was very useful for better understanding results of my segmentation. Giuseppe 2018-05-08 8:22 GMT+02:00 Markus Metz : > > > On Mon, May 7, 2018 at 4:03 PM, Giuseppe Esposito > wrote: > > > > Dear GRASS

[GRASS-user] To import from or to link to data stored in a PostgreSQL data base?

Dears, the following concerns an update of an existing workflow, part of which is GRASS GIS, that makes use of a large PostgreSQL data base which does not reside locally. The original data set consists of tens of thousands of (overlapping) polygons. The data are required solely to build raster

Re: [GRASS-user] Experience with extracting a DTM from a DSM ?

Hello Moritz, if you mean trying to filter a point cloud which is not especially produced by a lidar (e.g. 3d reconstruction tools such as Micmac), I would suggest you to have a look at Canupo : http://nicolas.brodu.net/en/recherche/canupo/index.html Vincent. Le mardi 08 mai 2018 à 12:58

Re: [GRASS-user] Experience with extracting a DTM from a DSM ?

On 08/05/18 13:40, Markus Neteler wrote: Hi, Moritz Lennert > schrieb am Di., 8. Mai 2018, 12:58: Hi, Does anyone have experience with extracting a DTM (ground) from a DSM ? Any special GRASS modules I missed ?

Re: [GRASS-user] Experience with extracting a DTM from a DSM ?

Hi, Moritz Lennert schrieb am Di., 8. Mai 2018, 12:58: > Hi, > > Does anyone have experience with extracting a DTM (ground) from a DSM ? > Any special GRASS modules I missed ? Any hints ? > Do you mean from a raster DSM? Markus >

[GRASS-user] Experience with extracting a DTM from a DSM ?

Hi, Does anyone have experience with extracting a DTM (ground) from a DSM ? Any special GRASS modules I missed ? Any hints ? Moritz ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] v.external to layer in PostGIS database

Just to document here the way out: 1. First, and not posted here previously, there was a "problem" related to the number of object locks allocated for each transaction: ``` db.tables -p DBMI-PostgreSQL driver error: Unable to select view names. ERROR: out of shared memory HINT: You might need

Re: [GRASS-user] Clustering process in i.segment

On Mon, May 7, 2018 at 4:03 PM, Giuseppe Esposito wrote: > > Dear GRASS GIS experts, > > I’m approaching segmentation in GRASS GIS and some doubts arised when reading the manual of the i.segment module ( https://grass.osgeo.org/grass74/manuals/i.segment.html). For this