Bug report #21101
Legend content issue when using atlas and themes
Status: | Open | ||
---|---|---|---|
Priority: | Normal | ||
Assignee: | - | ||
Category: | Map Legend | ||
Affected QGIS version: | 3.4.4 | Regression?: | No |
Operating System: | Windows 10 | Easy fix?: | No |
Pull Request or Patch supplied: | No | Resolution: | |
Crashes QGIS or corrupts data: | No | Copied to github as #: | 28919 |
Description
Greetings,
Here is the behavior I noticed:
When using themes and an atlas to generate automatically maps, the current selected sub item in the map will be used rather than the setting of the theme.
IE: If I have a layer with 7 classes and I want one of them to be displayed for 2 themes and all the classes for 1 other theme.
The legend will display the classes that are currently activated in the map regardless of what is displayed by the theme on the canvas.
This mean that I must set my map to match the theme of the canvas in order to display the proper categories in the legend, otherwise only one, none or all the classes for a given layer will be displayed depending on the current map theme and regardless of the canvas theme.
Thanks and have a nice day!
History
#1 Updated by Alexis Roy-L over 5 years ago
This is not an issue with the auto-update activated. But the auto-update displays too much information(basemap, etc.), which makes it more annoying to use.
#2 Updated by Giovanni Manghi over 5 years ago
- Status changed from Open to Feedback
Please always test with the latest version available, now is 3.4.4. Thanks.
#3 Updated by Alexis Roy-L over 5 years ago
Giovanni Manghi wrote:
Please always test with the latest version available, now is 3.4.4. Thanks.
Bug is still present in 3.4.4
Here is how to replicate it:
1 Make a layer with categories.
2 save themes with some categories disabled
3 Make a file with the name of the theme in a field to act as the atlas
4 in the layout deactivate auto update and add the layer to the atlas, set the legend to filter visible elements
5 use the atlas field to set the canvas map theme and activate the theme option.
6 cycle through the atlas.
You will see that only the map preset will be used to determine which layer categories will be displayed in the legend.
#4 Updated by Giovanni Manghi over 5 years ago
- Affected QGIS version changed from 3.4.0 to 3.4.4
- Status changed from Feedback to Open