[Qgis-user] Problems using TIN tool

[Nicolas Cadieux]

Hi, 
I normally use the gdal raster interpolation tool (what you are using) rather than the TIN tool for the same reason. The TIN tool work well with a few points.  I don't know why exactly. 
If you are non commercial, and have under a million points, you could use lastools to do the TIN. I you have line across your DEM, it means you have busted the lastools license. 
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 10, 2015 1:46 PM, "hersala [via OSGeo.org]" <ml-node+s1560n5235579h10 at n6.nabble.com> wrote: 

	Dear QGIS users, Do you know if the Interpolation Tool (TIN method) has a defined limitation in the number of points to be interpolated (or in any other limitation). I ask this because I have no problem in create a DEM using the Raster/Analysis/Grid (Interpolation) tool. But I when I try with TIN interpolation, I obtain a "empty" raster DEM layer with "nan" as minimun and maximun values.  In both cases the shp file used as input has ~100.000 DGPS points, is it too big to be used with TIN interpolation? I'm using QGIS 2.8.2-Wien in MS-Windows. Thanks in advance! Hernán 
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