I'd like to find in QGIS the same tool as in ArcGIS "Create Tin from Features" from the 3D Analyst Toolbar. How can I do that ?
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In QGIS you have the interpolation plugin. Go to raster->interpolation and choose interpolation method->TIN. Also you could check this links:
How Can I Create a Tin from Elevation Points in QGIS
Can I create a TIN from contours lines (shp) in QGIS?