The new mode "Snap to anchor nodes (single layer only)" makes sure that any two vertices of the vector layer are at least at distance given by the threshold value.
This algorithm comes handy when doing vector overlay operations such as intersection, union or difference to prevent possible topological errors caused by numerical errors if coordinates are very close to each other. After running the algorithm some previously valid geometries may become invalid and therefore it may be useful to run Fix geometries algorithm afterwards.
This feature was funded by InaSAFE DFAT
This feature was developed by Martin Dobias (Lutra Consulting)