[Qgis-user] Simple way to toggle all classes invisible?

[Richard Duivenvoorde]

Hi All,

Somebody shows me a project in which there is one layer with 61 classes (Categorized styling: fauna species), the user wants to analyze one specie at a time, so I proposed: toggle the species-classes off first, and then one by one enable them to do your visual analysis...

But... I could not find a way to toggle visibility of all classes (in one layer) in one go? 

The little icons in the Layers panel only work for layers and layer groups, but not for the little check-boxes in front of the classes.

Anybody a clever idea for this?
OR should I propose to create a button in the styling panel (next to the 'Delete All' button) to 'Toggle visibility' or so?

Regards,

Richard Duivenvoorde

PS another observation: the user having a Windows/4K screen, the labeling of the 10000 features was rather slow in combination with the WMTS background layers...