On Wed, Sep 27, 2017 at 1:11 PM, Johannes Radinger < johannesradin...@gmail.com> wrote: > > Hi, > > I have a GRASS vector network that represents a river network (with many first order tributaries) and that has additional connected nodes that represent sampling sites. > > I'd like to extract a minimum subnetwork of the full network that still connects a set of selected nodes (e.g. identified by their cat). However, network edges (i.e. river segments) that are not necessary to connect the sampling points should be excluded in the new subnetwork. Is there a function or process in GRASS GIS to extract such a subnetwork that fully connects a set of selected nodes?
You could try v.net.steiner. A Steiner tree is probably overkill for a river network, but it should work. Markus M > > Cheers, > Johannes > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-user
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