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Hi Moritz,
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<div>Thanks to your help, I now have been able to run through a number of the vector network operations. Two that don't seem to work are v.net.steiner and v.net.spanningtree. But perhaps I am not doing it right.</div>
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<div>Here is the setup using Highschools from the schools_wake vector and streets_wake in the sc_08 demo data set.</div>
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<div>First I connect highschools (previously extracted from schools_wake) with the streets.</div>
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<div><a href="http://v.net">v.net</a> --overwrite input=streets_wake@grass7vect_sqlite points=highschools@spatialtech2012 output=hs_net operation=connect alayer=1 nlayer=2 thresh=200</div>
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<div>When I run v.net.stiener, it gives no error but doesn't create anything either. Here is the command:</div>
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<div>v.net.steiner input=hs_net@spatialtech2012 output=hs_steiner type=line alayer=1 nlayer=2 tcats=4,7,11,12,37,49,50,65,67,69,77,83,91,101,103,115,117,138,153,158,164,165</div>
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<div>When I run v.net.spanningtree, I do get results, but it is a complex street network that is almost the same as the original street network. Here is the command I am using:</div>
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<div>v.net.spanningtree --overwrite input=hs_net@spatialtech2012 output=hs_spanningtree alayer=1 nlayer=2</div>
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<div>Any suggestions?</div>
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<div>Michael</div>
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<div>____________________</div>
<div>C. Michael Barton</div>
<div>Director, Center for Social Dynamics & Complexity </div>
<div>Professor of Anthropology, School of Human Evolution & Social Change</div>
<div>Arizona State University</div>
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voice: <span class="Apple-tab-span" style="white-space: pre; "> </span>480-965-6262 (SHESC), 480-727-9746 (CSDC)<br>
fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)<br>
<div>www: <a href="http://www.public.asu.edu/~cmbarton">http://www.public.asu.edu/~cmbarton</a>,
<a href="http://csdc.asu.edu">http://csdc.asu.edu</a></div>
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