Super - thank you! I will give this a go first and get back to you if I get stuck. Thanks again.
Cheers Le gach dea ghui, *Shane Carey* *GIS and Data Solutions Consultant* On Tue, May 1, 2018 at 12:01 PM, Stefan Blumentrath < [email protected]> wrote: > Hi Shane, > > > > If your network dataset is directed, you could use: > > https://github.com/NINAnor/gudbrand_hydro/blob/master/v.igraph.order.py > > to classify the nodes from which you then can generate the outlet vector > point map for v.stream.order. > > > > If your network is not directed, you could use v.to.points or v.net to > dump the points, add altitude information from a terrain model > (v.what.rast), and then extract the lowest points as outlets (requires some > SQL). > > > > For more support we would need a bit more information about your data… > > > > Cheers > > Stefan > > > > > > *From:* Shane Carey <[email protected]> > *Sent:* tirsdag 1. mai 2018 10.29 > *To:* Stefan Blumentrath <[email protected]> > *Subject:* Re: [GRASS-user] Stream order from existing stream network > layer > > > > Hi Stefan, > > I had a look at this, but it requires a point layer also - which I don't > have unfortunately. > > Thanks > > > Le gach dea ghui, > > *Shane Carey* > > *GIS and Data Solutions Consultant* > > > > On Tue, May 1, 2018 at 7:57 AM, Stefan Blumentrath < > [email protected]> wrote: > > Hi Shane, > > > > Please have a look at: > > https://grass.osgeo.org/grass74/manuals/addons/v.stream.order.html > > Then you can use v.rast.stats to collect some statistics… > > > > Cheers > > Stefan > > > > *From:* grass-user <[email protected]> *On Behalf Of *Shane > Carey > *Sent:* tirsdag 1. mai 2018 00.37 > *To:* grass-user grass-user <[email protected]> > *Subject:* [GRASS-user] Stream order from existing stream network layer > > > > Hi, > > Is there way of calculating the stream order from an existing vector > dataset in Grass GIS? The vector layer has been created from manual > digitising. > > In addition, is it possible to obtain other stream characteristics for > this layer that you would obtain from *"r.stream.segment"* > > Thanks in advance > > Le gach dea ghui, > > *Shane Carey* > > *GIS and Data Solutions Consultant* > > >
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