[Qgis-user] Interpolation with breaklines

[Nicolas Cadieux]

Hi, 
In the QGIS interpolation plugin where you can do a tin (not the gdal grid functions), you can select points but also lines.  I assume these are break line.  I don't use this much as this function seem to crash after a few thousand points but under that, you use it. 
Nicolas Cadieux M.Sc. 
Les Entreprises Archéotec inc.  
8548, rue Saint-Denis Montréal H2P 2H2 
Téléphone: 514.381.5112  Fax: 514.381.4995 
www.archeotec.ca 
On Nov 20, 2015 5:47 AM, "Neumann, Andreas [via OSGeo.org]	" <ml-node+s1560n5237598h99 at n6.nabble.com> wrote: 

	
Hi, 
At my workplace we have to generate terrain models (contour lines) from irregularly input points with heights. We also have break lines (e.g. walls) that we would like to take into account during interpolation. 
While there are quite a few interpolation available in GRASS or SAGA, I can't find any interpolation methods that also take break lines. 
I found  http://grasswiki.osgeo.org/wiki/TIN_with_breaklines   - which seems to do what I want, but is a separate module and builds on a "triangle" executable and is not distributed with GRASS. 
I have therefore two questions: 
1. Is this the only FOSSGIS option we have, if breaklines should be considerered during interpolation? Or are there alternatives? 
2. Did someone use v.traingle. this in a production environment? Does it work properly? I am just asking before I try to install it. 
3. If this works fine - can we try to distribute it with OSGeo4W? 
Thanks, 
Andreas 
  

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