[QGIS-Developer] Might snap change a 2D layer to 3D? discussion how to fix https://issues.qgis.org/issues/16927

[Tom Chadwin]

I'm not sure. What happens now? Are there circumstances in which either:

- single gets silently converted to multi or vice versa

- a user cannot do something they think should be possible, because the
geometry cannot convert from single to multi or vice versa

If either can happen, I think this is undesirable, and options/warnings
similar to your proposal for the existing issue should be implemented.

Apologies if this is too broad for this issue. I was just interested by the
"incompatible geometry" error, and wondered if there were possible causes
other than 2D/3D.

Thanks

Tom



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