Feature request #17064
Data Defined size legend: Prepopulate the size classes with the values used
|Pull Request or Patch supplied:||No||Resolution:|
|Easy fix?:||No||Copied to github as #:||24963|
Layer Properties > Diagram, set the options in order to enable the Legend entries for diagram size in the Legend tab
in the Data Defined size legend dialog that opens, it could be nice to by default populate the "Manual size classes" frame, with the values used to preview the legend (even though they are grayed).
This way if the user wants to customize, he can use some of the existing values. Also it'll make the frame more obvious (ie, you enable the checkox in order to modify these shown default values)