[GRASS-user] specifying length of segments to v.out.vtk

When using v.out.vtk to export a vector map with boundary GRASS breaks and writes out the segments in file. Is there a way to control the nominal size of the segments when exporting it to VTK format. For example, I want to be able to specify it to creates segments that are 1m in legth, or 5m. In

Re: [GRASS-user] specifying length of segments to v.out.vtk

Thanks. I was able to use v.to.points with 'dmax' option for my purpose. Jitu On Tue, Oct 7, 2014 at 11:27 AM, Markus Neteler nete...@osgeo.org wrote: On Tue, Oct 7, 2014 at 4:32 PM, Jitendra Kumar jitendra.n...@gmail.com wrote: When using v.out.vtk to export a vector map with boundary

[GRASS-user] Adding attributes to vector map

I want to be able to add additional attributes to existing vector layer in GRASS. For point and polygons I want to query the existing cat or attributes and then add data in a new field from information from a external file. For example, I want to query the US County map polygons for county name

Re: [GRASS-user] preserving original resolution with r.in.gdal

Hello GRASS-Users: While importing a raster map using r.in.gdal it uses the resolution of the current region for the resulting raster map. Is there a way to preserve the original resolution of the raster while importing it in irrespective of the settings of the current region. I can check the

[GRASS-user] error reprojecting

Hi, I have a GRASS location using Lambert Conformal Conic projection. g.region -p projection: 99 (Lambert Conformal Conic) zone: 0 datum: wgs84 ellipsoid: wgs84 north: 200 south: -3135000 west: -220 east: 3352000 nsres: 1000 ewres: 1000 rows:

[GRASS-user] Raster color tables missing entries

Some of the raster color table files in the 'colr' directory appears to be missing entries for some categories. However, if I plot the maps using d.rast color appears for all the categories. How do I make sure that color table has exactly same (and all) RGB values in the color table file in 'colr'

[GRASS-user] Color table across multiple rasters

I need to create a histogram equalized color table for a set of rasters. I can use r.colors for each raster individually but then the color tables are not comparable across the maps. Any suggestions on how to create a color table across multiple rasters? Thanks, Jitu

[GRASS-user] Color table for multiple rasters

I need to create a histogram equalized color table for a set of rasters. I can use r.colors for each raster individually but then the color tables are not comparable across the maps. Any suggestions on how to create a color table across multiple rasters? Thanks, Jitu

[GRASS-user] v.what.rast for lines

Hi, v.what.rast allows to extract the values from the raster at the vector points. How to do a similar operation for a vector map consisting of lines instead of points. I have road network as vector and I wish to extract the average value over each line segment from a raster. I thought of several

[GRASS-user] importing TIN mesh in GRASS

Hi, I have a TIN mesh from a simulation model that I want to bring in the GRASS. I was able to bring in the grid nodes in the vector map but am not sure how to create the triangles. I know GRASS has routines for triangulation, but couldn't find how to to import a already triangulated mesh. Would