(Feature Suggestion) Capability to Edit Vertex Position of Saved User Defined Geometry.
Feature suggestion - capability to edit points of existing user define geometries. If a user has spent a lot of effort creating a user-defined polygon, then they may wish to edit the location of the vertices of that (saved) polygon at a later time. At the moment, it is not obvious how to do this ; perhaps this functionality does not exist.
No, it does not exist yet. Users currently must delete a selected geometry then draw a new one (see #401).
A workaround is to open ~/.cate/preferences.json in a text editor, then scroll to the element "placemarkCollection", then find the GeoJSON feature whose geometry you want to change using search term "title": "<my-title>" where <my-title> is the name of the place displayed in the GUI. In its "geometry" element you can edit the feature's coordinates.