[GRASS-user] v.rast.stats over a large vector file

Dear list I am trying to run v.rast.stats for a large vector file. It contains around 70 buildings representing buildings. here is my g.region info g.region -p projection: 99 (Transverse Mercator) zone: 0 datum: osgb36 ellipsoid: airy north: 183010.45829976 south:

Re: [GRASS-user] Memory problems with v.in.ogr

Hi, My guess: 7GB is a lot. 334611 primitives are many, but not that much, but: you got 18 millions vertices! (18459167) That seems a lot. Depending on how tangled your lines are, a potential mass of features can be generated. Just a guess, best, Achim Am 26.11.2010 03:14, schrieb Pierre

Re: [GRASS-user] v.rast.stats over a large vector file

Hi Sab, v.stats _IS_ very slow (for many primitives). Maybe you could analyse the database, where you can calculate the statistics you like. For spatial statistics you can analyse uploaded coordinates of centroids or sizes of area. Hope it helps a bit, Achim Am 26.11.2010 12:32, schrieb

Re: [GRASS-user] v.rast.stats over a large vector file

On Fri, Nov 26, 2010 at 12:32 PM, razmjoo...@faunalia.co.uk wrote: Dear list I am trying to run v.rast.stats for a large vector file. It contains around 70 buildings representing buildings. here is my g.region info g.region -p projection: 99 (Transverse Mercator) zone:       0

[GRASS-user] v.rast.stats No categories found in raster map

Hi, I'm trying to run the v.rast.stats script using a vector map and a dem as input. The strange thing is, that for one vector map the script works fine, and for another vector map I get the error No categories found in raster map. As far as I understood, this error is related to the vector map,

Re: [GRASS-user] v.rast.stats over a large vector file

Many thanks for your suggestions. I will give it try and let you know which one works. Cheers Sab I used StarSpan to do something similar (but with less vector feature: 6000). It worked pretty well. Maybee worth a try? http://starspan.projects.atlas.ca.gov/doku/doku.php Daniel On Fri,

Re: [GRASS-user] v.rast.stats No categories found in raster map

Markus Metz a écrit : On Fri, Nov 26, 2010 at 2:22 PM, sonja1 sonja.jankowf...@cemagref.fr wrote: Hi, I'm trying to run the v.rast.stats script using a vector map and a dem as input. The strange thing is, that for one vector map the script works fine, and for another vector map I get the

[GRASS-user] snap points to next lines

Hello Grass-Users! I'am using QGIS in combination with Grass GIS. I have the following problem: There are two shapes (point and line) and I would like to snap the points to nearest line. Is it possible to do it automatically? I would be glad if somebody could help me :-) Best Regards Steffen

[GRASS-user] file .img and Interrupted Goode Homolosine

Hy everyone. Two problems: 1) I can not import a file erdas why is not supported. gdalinfo image.img ERROR 4: `image.img' not recognised as a supported file format. gdalinfo failed - unable to open 'image.img'. 2) Projection: Interrupted Goode Homolosine I could not find the EPSG

Re: [GRASS-user] file .img and Interrupted Goode Homolosine

Hi, 2010/11/26 Gabriele N. gis...@libero.it: 1) I can not import a file erdas why  is not supported. gdalinfo image.img ERROR 4: `image.img' not recognised as a supported file format. strange, this formats seems to be supported by GDAL [1]. Martin [1] http://gdal.osgeo.org/frmt_hfa.html --

[GRASS-user] Re: file .img and Interrupted Goode Homolosine

Hi Martin. Yes, strange ... I tried also with QGIS, and obviously does not work ... : / This file is strange:) .. also because I can not understand how to create the location with the projection Interrupted Goode Homolosine...boooh Gabriele -- View this message in context:

[GRASS-user] Display 3-D volume

I would like to calculate and draw a 3-D volume, but I am not really sure if nviz can do it, or how to accomplish it. In this case I have two surfaces that are both in space over a boundary. In other words, there is a boundary on the ground and then there are two surfaces in space above

Re: [GRASS-user] snap points to next lines

On 11/26/2010 06:32 PM, mails-fo...@gmx-topmail.de wrote: Hello Grass-Users! I'am using QGIS in combination with Grass GIS. I have the following problem: There are two shapes (point and line) and I would like to snap the points to nearest line. Is it possible to do it automatically? I would