Why I cannot do TIN Interpolation in QGIS?
I had the same issue. I converted a dxf file into a shape file and then I tried to use Tin interpolation but it didn't work. Then I realized that, in my dxf file, there were some very very small lines and polyline and, after removing them, the interpolation went just fine. I don't really have an explanation but maybe this could help you.
I want to do TIN Interpolation on a layer but when I fill all the fields with the right data (vector layer, interpolation attribute, extent etc) the algorithm does not run and shows me this message:
Traceback (most recent call last):
File "C:/PROGRA~1/QGIS 3.14/apps/qgis/./python/plugins\processing\algs\qgis\TinInterpolation.py", line 188, in processAlgorithm
writer.writeFile(feedback)
Exception: unknown
Execution failed after 0.08 seconds
Does anybody have an idea about it?? Thank you