Bug report #19097
Data defined size legend symbols do not show if you use a field or an expression to scale the symboŀ, and not the DD assistant
| Status: | Open | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Map Legend | ||
| Affected QGIS version: | 3.1(master) | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 26927 |
Description
If you scale a point symbol size with the data-defined override feature, and you'd later want to display the scales in the legend or layer tree, you'll be able to get a sized symbol legend only if you used the data-defined assistant. Using an existing field or an expression (even when you copy the one returned by the assistant dialog) does nothing: the legend ignores the scaling and seems to be triggered by only the assistant dialog.
This makes the feature less interesting and a bit shaky.