<table cellspacing="0" cellpadding="0" border="0"><tr><td valign="top"><div id='yahoo__compose_area' style="background-color:white; display:block; font-family:HelveticaNeue-Regular,Helvetica;">Hi all,<div><br></div><div>I Know, We are on qgisforum, perhaps we could use openjump gis (1.8)This software purpose interpolation with breacklines.</div><div><br></div><div>Brest regards<br><br><br><a href="https://yho.com/footer0">Envoyé depuis Yahoo Mail pour iPad</a></div></div><div id='yahoo__original_message' class='yQTDBase'><br><blockquote style="margin:0 0 0 .8ex; border-left:1px #ccc solid; padding-left:1ex; ">Le 20 nov. 2015 17:51:30, Alex Mandel<tech_dev@wildintellect.com> a écrit :<div id="msgSandbox_ALphUtQAABHPVk9Pkgg9YGV2FLdo_TEXT" class="msgSandbox" style="padding: 1.5em 0.5em 0.5em 1.2em; word-wrap: break-word;">On 11/20/2015 02:56 AM, Neumann, Andreas wrote:<br clear="none">> <br clear="none">> <br clear="none">> Hi, <br clear="none">> <br
clear="none">> At my workplace we have to generate terrain models (contour lines) from<br clear="none">> irregularly input points with heights. We also have break lines (e.g.<br clear="none">> walls) that we would like to take into account during interpolation. <br clear="none">> <br clear="none">> While there are quite a few interpolation available in GRASS or SAGA, I<br clear="none">> can't find any interpolation methods that also take break lines. <br clear="none">> <br clear="none">> I found <a shape="rect" href="http://grasswiki.osgeo.org/wiki/TIN_with_breaklines " target="_blank">http://grasswiki.osgeo.org/wiki/TIN_with_breaklines </a> - which<br clear="none">> seems to do what I want, but is a separate module and builds on a<br clear="none">> "triangle" executable and is not distributed with GRASS. <br clear="none">> <br clear="none">> I have therefore two questions: <br clear="none">> <br clear="none">> 1. Is this the only FOSSGIS option we
have, if breaklines should be<br clear="none">> considerered during interpolation? Or are there alternatives? <br clear="none">> <br clear="none">> 2. Did someone use v.traingle. this in a production environment? Does it<br clear="none">> work properly? I am just asking before I try to install it. <br clear="none">> <br clear="none">> 3. If this works fine - can we try to distribute it with OSGeo4W? <br clear="none">> <br clear="none">> Thanks, <br clear="none">> <br clear="none">> Andreas <br clear="none"><br clear="none"><a shape="rect" href="https://grass.osgeo.org/grass70/manuals/addons/v.surf.icw.html" target="_blank">https://grass.osgeo.org/grass70/manuals/addons/v.surf.icw.html</a><br clear="none"><br clear="none">"Inverse cost weighting is like inverse distance weighted (IDW)<br clear="none">interpolation, but uses cost instead of shortest Euclidean distance. In<br clear="none">this way solid barriers and molasses zones may be correctly taken
into<br clear="none">account."<br clear="none"><br clear="none"><br clear="none">There may also be a way in R, or a more general method that could be<br clear="none">achieved with existing tools used in a slightly different way as<br clear="none">described here<br clear="none"><a shape="rect" href="http://gis.stackexchange.com/a/33678" target="_blank">http://gis.stackexchange.com/a/33678</a><br clear="none"><br clear="none">-Alex<div class="yQTDBase yqt7493764420" id="yqtfd62207"><br clear="none">_______________________________________________<br clear="none">Qgis-user mailing list<br clear="none"><a shape="rect" ymailto="mailto:Qgis-user@lists.osgeo.org" href="javascript:return">Qgis-user@lists.osgeo.org</a><br clear="none">List info: <a shape="rect" href="http://lists.osgeo.org/mailman/listinfo/qgis-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-user</a><br clear="none">Unsubscribe: <a shape="rect"
href="http://lists.osgeo.org/mailman/listinfo/qgis-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-user</a></div></div><div></div></blockquote></div></html></td></tr></table>