<div dir="ltr"><div>Super - thank you! I will give this a go first and get back to you if I get stuck. Thanks again.<br><br></div>Cheers<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Le gach dea ghui,<br></div><div><span style="color:rgb(61,133,198)"><b><span style="background-color:rgb(255,255,255)"><i>Shane Carey</i></span></b></span></div><div><span style="color:rgb(61,133,198)"><b><span style="background-color:rgb(255,255,255)"><i>GIS and Data Solutions Consultant</i></span></b></span><br></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Tue, May 1, 2018 at 12:01 PM, Stefan Blumentrath <span dir="ltr"><<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Shane,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">If your network dataset is directed, you could use:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><a href="https://github.com/NINAnor/gudbrand_hydro/blob/master/v.igraph.order.py" target="_blank">https://github.com/NINAnor/<wbr>gudbrand_hydro/blob/master/v.<wbr>igraph.order.py</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">to classify the nodes from which you then can generate the outlet vector point map for v.stream.order.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">If your network is not directed, you could use v.to.points or <a href="http://v.net" target="_blank">v.net</a> 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).<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">For more support we would need a bit more information about your data…<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Cheers<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Stefan<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US"> Shane Carey <<a href="mailto:careyshan@gmail.com" target="_blank">careyshan@gmail.com</a>>
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<b>Sent:</b> tirsdag 1. mai 2018 10.29<br>
<b>To:</b> Stefan Blumentrath <<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>><br>
<b>Subject:</b> Re: [GRASS-user] Stream order from existing stream network layer<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Stefan,<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I had a look at this, but it requires a point layer also - which I don't have unfortunately.<u></u><u></u></p>
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<p class="MsoNormal">Thanks<u></u><u></u></p>
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<p class="MsoNormal">Le gach dea ghui,<u></u><u></u></p>
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<p class="MsoNormal"><b><i><span style="color:#3d85c6;background:white">Shane Carey</span></i></b><u></u><u></u></p>
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<p class="MsoNormal"><b><i><span style="color:#3d85c6;background:white">GIS and Data Solutions Consultant</span></i></b><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Tue, May 1, 2018 at 7:57 AM, Stefan Blumentrath <<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Hi Shane,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Please have a look at:</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"><a href="https://grass.osgeo.org/grass74/manuals/addons/v.stream.order.html" target="_blank">https://grass.osgeo.org/<wbr>grass74/manuals/addons/v.<wbr>stream.order.html</a></span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Then you can use v.rast.stats to collect some statistics…</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Cheers</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d" lang="EN-GB">Stefan</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US"> grass-user
 <<a href="mailto:grass-user-bounces@lists.osgeo.org" target="_blank">grass-user-bounces@lists.<wbr>osgeo.org</a>>
<b>On Behalf Of </b>Shane Carey<br>
<b>Sent:</b> tirsdag 1. mai 2018 00.37<br>
<b>To:</b> grass-user grass-user <<a href="mailto:grass-user@lists.osgeo.org" target="_blank">grass-user@lists.osgeo.org</a>><br>
<b>Subject:</b> [GRASS-user] Stream order from existing stream network layer</span><u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi,<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">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.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">In addition, is it possible to obtain other stream characteristics for this layer that you would obtain from
<i>"r.stream.segment"</i><u></u><u></u></p>
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<p class="MsoNormal">Thanks in advance<br>
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<p class="MsoNormal">Le gach dea ghui,<u></u><u></u></p>
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<p class="MsoNormal"><b><i><span style="color:#3d85c6;background:white">Shane Carey</span></i></b><u></u><u></u></p>
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<p class="MsoNormal"><b><i><span style="color:#3d85c6;background:white">GIS and Data Solutions Consultant</span></i></b><u></u><u></u></p>
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