Re: [GRASS-user] Null or 0?

Hi Andre, On raster algebra, operations using null will return null while operations with 0 behaves like expected. Ex: 12 x null = null 12 x 0 = 0 Null is interesting to use on areas you don't have / want to represent, like an ocean... Hope it helps Daniel On Feb 5, 2012 12:03 AM, ALT SHN

[GRASS-user] Coordinates from distances

Hi all, Might be a bit off topic but here we go: I need to calculate coordinates for several points, something similar to m.cogo, but instead of having distance + bearing information, I'll have distance from at least 3 fixed, known landmarks. Is there a tool already built for this? If not, I

[GRASS-user] Re: [GRASSLIST:644] Re: Fwd: Fwd: Developing a forest fragmentation index

Hi, has this script ever been implemented into current grass releases? However, I've been using this script right now and it helped me a lot to get the algorithm from Riitters et al. running, so thanks a lot for your work, Manning. I made some changes to the script, because I did not understand

Re: [GRASS-user] Re: [GRASSLIST:644] Re: Fwd: Fwd: Developing a forest fragmentation index

On Sun, Feb 5, 2012 at 2:26 PM, Stefan Sylla stefansy...@gmx.de wrote: Hi, has this script ever been implemented into current grass releases? However, I've been using this script right now and it helped me a lot to get the algorithm from Riitters et al. running, so thanks a lot for your

Re: [GRASS-user] ps.map rotatecolumn argument

Hello Hamish, thank you for your reply, I knew you were the author of this feature ;-), read this in a former post. (I had to cope the whole day with ice in pipes, so sorry for the late reaction...) I run grass on a 64bit linux system (debian), freshly updated 6.4 version from svn. Angles are

Re: [GRASS-user] Coordinates from distances

Daniel wrote: Might be a bit off topic but here we go: I need to calculate coordinates for several points, something similar to m.cogo, but instead of having distance + bearing information, I'll have distance from at least 3 fixed, known landmarks. Is there a tool already built for this?

Re: [GRASS-user] Coordinates from distances

Hi Hamish, Thanks for the help. The search and rescue exemples are realy interesting. Just one question though. I can find v.overlay in the grass manual but I cannot find v.overlap (for the Venn overlap area)... is that an add on? Did not find it in the addon repository also... Thanks Daniel On

[GRASS-user] Error using g.region and visualizing LAS files

I am a first time GRASS user working on a project through the Department of Transportation. We're trying to visualize LiDAR data we have collected from a particular segment of roadway so that we can better analyze and present our finding to the DoT, and I have been encountering some issues

Re: [GRASS-user] Coordinates from distances

Daniel wrote: Thanks for the help. The search and rescue exemples are realy interesting. Just one question though. I can find v.overlay in the grass manual but I cannot find v.overlap (for the Venn overlap area)... is that an add on? Did not find it in the addon repository also... just a

Re: [GRASS-user] landsat import with python-script

Stefan wrote: I tried to perform an automated import of landsat imagery using the python script (found here: http://grass.osgeo.org/wiki/LANDSAT#Automated_data_import). After starting the python-script, I get the following error-message: The structure of the folder