[GRASS-user] Extract subnet from grass vector network based on selected nodes

[Moritz Lennert]

Le 27 septembre 2017 13:11:54 GMT+02:00, Johannes Radinger <johannesradinger at gmail.com> a écrit :
>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?

not sure but maybe v.net.spanningtree ?

Moritz