[GRASS-user] features not reachable in network

Hi all, I'm trying to measure the distance between points along a vector representing a stream network. I tried this first with the 'stream' vector in the North Carolina sample data set, following the example from the documentation for v.net.allpairs: 1. v.split to split network into segments

Re: [GRASS-user] v.net vector orientation when creating a stream network with gauges

Hi Chris, d.vect has an option to display the direction of lines, and the vector digitizer has a tool to flip the direction of things. The man pages have details about those things work. Regards, Will On Wed, Mar 9, 2016 at 2:28 PM, Bartolomei.Chris wrote: >

Re: [GRASS-user] stream network

Hi Janet, Can you give some more information about what you mean by larger watershed basins? Did you do any preprocessing of the elevation raster before you tried to extract the stream networks? Were you using an elevation raster that had been merged from different rasters? I've ran into

Re: [GRASS-user] What algorithm does r.drain use?

You might also take a look at the r.connectivity.* tools: http://grass.osgeo.org/grass65/manuals/addons/r.connectivity.corridors.html It looks like it uses the igraph package in R, which has good documentation. Regards, Will On Thu, Jan 8, 2015 at 6:03 PM, Markus Metz

[GRASS-user] v.net.centrality closeness

I'm using v.net.centrality to do some calculations, and I had a question about how closeness centrality is calculated by the module: Is the value for closeness centrality actually farness (the sum of the distance from a site in a network to all other sites in the network)? v.net.centrality is