I'm trying to generate contour lines/isolines from groundwater points (groundwater depth) with SAGA (I tried before with QGIS, contour plugin, but the result was not good looking, too angular lines).
I have uploaded my groundwater points into SAGA, but I can't find the right tool or the steps to draw the contour lines. Can somebody tell me the steps to do it?
Do I need to generate a grid first ?