Re: [GRASS-user] Obtain land use within 50 km buffers around vector points

2017-06-01 Thread Moritz Lennert
On 01/06/17 16:41, Moritz Lennert wrote: Currently, the best way I see is to create a correspondance table between the pieces and the original cat values. You can get that by running v.category buffers op=add layer=2 out=buffers_2_layers [...] Then just run v.rast.stats once per class (each

Re: [GRASS-user] Obtain land use within 50 km buffers around vector points

2017-06-01 Thread Moritz Lennert
On 01/06/17 13:07, Johannes Radinger wrote: Hi, I have a vector map of 50 km buffers surrounding 4000 points in entire Europe. The single buffers where calculated using v.buffer with the -t flag. Thus, many of my buffers overlap (i.e. geometries of buffers are not merged but split up). Now, I

[GRASS-user] Obtain land use within 50 km buffers around vector points

2017-06-01 Thread Johannes Radinger
Hi, I have a vector map of 50 km buffers surrounding 4000 points in entire Europe. The single buffers where calculated using v.buffer with the -t flag. Thus, many of my buffers overlap (i.e. geometries of buffers are not merged but split up). Now, I want to obtain for each 50 km buffer the

Re: [GRASS-user] increase performance of r.neighbors

2017-06-01 Thread Moritz Lennert
On 01/06/17 10:49, Giuseppe Amatulli wrote: Thanks all for the inputs. In the end I implemented a scripting procedure outside grass using pktools (pkfilter). I first tiled the image with some overlap area, than run pkfilter -f stdev , than crop the overlap area and then merge back the full

Re: [GRASS-user] increase performance of r.neighbors

2017-06-01 Thread Giuseppe Amatulli
Thanks all for the inputs. In the end I implemented a scripting procedure outside grass using pktools (pkfilter). I first tiled the image with some overlap area, than run pkfilter -f stdev , than crop the overlap area and then merge back the full image. Best Regards Giuseppe On 28 May 2017 at

Re: [GRASS-user] error in remove mask

2017-06-01 Thread Giuseppe Amatulli
Thanks, I implemented accordingly and seams to work fine. Thank you. Best Giuseppe On 28 May 2017 at 17:18, Markus Metz wrote: > > > On Thu, May 25, 2017 at 5:24 PM, Giuseppe Amatulli < > giuseppe.amatu...@gmail.com> wrote: > > > > Hi Markus, > > in reality the