Bug report #17061
Using Data Defined Assistant on symbol size property set the symbol invisible in the layer properties dialog
|Affected QGIS version:||3.4.3||Regression?:||Yes|
|Operating System:||Easy fix?:||No|
|Pull Request or Patch supplied:||Yes||Resolution:|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||24960|
Take a point layer --> Layer Properties --> Single symbol
Use the Assistant option of the data defined button near the size property to draw a proportional symbol
Back to the single symbol dialog, you'll notice that there is no symbol beside the "Marker" text at the top of the dialog.
Note that you do not have this issue if you just pick a field from the data-defined button nor if you copy paste the assistant expression in the expression builder (though i'm not sure the behavior of the legend is then the right one).
Using the "old-way" DD assistant in 2.18 does work well.
Use first feature in layer to generate symbol preview icon in widget
Uses the first feature found in a layer in order to create a better
preview for the symbol in the symbol selector dialog. This allows
data defined settings to be evaluated correctly (at least, for the
first feature) and avoids missing previews due to missing
attribute values when data defined settings are present.
#4 Updated by Harrissou Santanna over 3 years ago
- Resolution deleted (
- Status changed from Closed to Reopened
- File DDproportionalv2.PNG added
Using e1a344f725, this is still true. actually, the symbol is displayed in the right side of the dialog but nothing in the tree view nor the layers panel (see DDproportionalv2 screenshot)
#8 Updated by Harrissou Santanna over 2 years ago
- Subject changed from Using Data Defined Assistant on symbol size property set the symbol invisible to Using Data Defined Assistant on symbol size property set the symbol invisible in the layer properties dialog
- File unavailablePreview.png added
- Status changed from Feedback to Open
- Affected QGIS version changed from 3.1(master) to 3.4.3
It's kind of still there: the symbol is now shown next to the topmost "marker" text but nothing is shown at the "Simple marker" level in the tree, nor as a preview on the right. See the unavailablePreview.png attached file.