<div dir="ltr">Hi Markus,<br><div class="gmail_extra"><br><div class="gmail_quote">2014-11-05 9:59 GMT+01:00 Markus Metz <span dir="ltr"><<a href="mailto:markus.metz.giswork@gmail.com" target="_blank">markus.metz.giswork@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On Tue, Nov 4, 2014 at 11:17 PM, matteo marcantonio<br>
<<a href="mailto:matteo.marcantonio@fmach.it" target="_blank">matteo.marcantonio@fmach.it</a>> wrote:<br>
> Hello list,<br>
><br>
> I'm writing since I need to clean a line vector (road network) removing all<br>
> the line segments not connected to other segments. I guess that I need to<br>
> remove all the segment that have valence = 0.<br>
><br>
> I need to remove them to perform a network distance analysis avoiding the<br>
> issue of unreachable nodes.<br>
><br>
> Is there any way to do it?<br>
<br>
</span>You could use v.net.alloc with one node and then extract the allocated<br>
network. This will automatically discard all lines not connected to<br>
this node.<br></blockquote><div><br></div><div>This is a good suggestion but it is not exactly what I need.</div><div><br></div><div>I need to connect all my nodes to the main road network avoiding that a node is connected to a 'dead road segment' (being unreachable by v.net.distance).</div><div><br></div><div>So I need to clean my road network, removing all the 'isolated road segment' (or 'valence=0).</div><div><br></div><div>Any suggestion?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Markus M<br>
<span><br>
><br>
> Thanks for any help<br>
><br>
> Matteo<br></span></blockquote><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <span><br></span></blockquote><div>Matteo</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>
> --<br>
> --<br>
> Matteo Marcantonio<br>
><br>
> PhD Candidate<br>
> GIS & Remote Sensing<br>
> Fondazione Edmund Mach (FEM) - Research & Innovation Centre (CRI)<br>
><br>
> <a href="mailto:matteo.marcantonio@fmach.it" target="_blank">matteo.marcantonio@fmach.it</a><br>
><br>
> +39 461615669 (Office)<br>
> +39 3204240538 (Mobile)<br>
><br>
> <a href="http://gis.cri.fmach.it" target="_blank">http://gis.cri.fmach.it</a><br>
><br>
><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><div dir="ltr">-- <br><div dir="ltr"><div style="font-size:small;font-family:arial">Matteo Marcantonio</div><div style="font-size:small;font-family:arial"><br></div><div style="font-size:small;font-family:arial"><i>PhD Candidate</i></div><div style="font-size:small;font-family:arial"><i>GIS & Remote Sensing</i></div><div style="font-size:small;font-family:arial"><i><i>Fondazione Edmund Mach (FEM) - </i>Research & Innovation Centre (CRI)</i></div><div style="font-size:small;font-family:arial"><br></div><div style="font-size:small;font-family:arial"><a href="mailto:matteo.marcantonio@fmach.it" target="_blank">matteo.marcantonio@fmach.it</a></div><div style="font-size:small;font-family:arial"><br></div><div style="font-size:small;font-family:arial">+39 461615669 (Office)</div><div style="font-size:small;font-family:arial">+39 3204240538 (Mobile)</div><div style="font-size:small;font-family:arial"><br></div><div style="font-size:small;font-family:arial"><a href="http://gis.cri.fmach.it/people/" style="color:rgb(17,85,204)" target="_blank">http://gis.cri.fmach.it</a></div></div></div><br></div></div>
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