Bug report #19970

Different default M values depending on the function

Added by Jerome P about 2 years ago.

Affected QGIS version:3.2.3 Regression?:No
Operating System:Windows 7 x64 Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:27792


I'm using QGIS 3.2.3-Bonn (QGIS code revision 9b176802e5) on Windows x64.
I have a spatialite layer with geometry from type LineStringM.

When I use the button "Add Line Feature" and click a few time in the map to add a new feature, the M-values of the new points are automatically set to 0.0, which is what I expected.

Now if I use the button "Vertex tool" to add points to an existing feature and then click a the "+" symbol between two vertex (or the one at the end of the feature), the M-value of the new point is "nan". I would have expected to get 0.0 like when adding a new feature.

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