Hi, this is something we have in our roadmap. We were waiting for the new legend refactoring to start something. I will also wait 2.4 to be released, in mainly do courses and testing by now. The first idea is to have a working legend for diagrams both for colors and size. We also need legend for data defined parameters.. and this is a completely different approach than classical predefined legend. We still need to investigate what is possible to do, total automatic on currently displayed objects, semi automated parsing the whole dataset with manual modifications.. I also discovered mapserver new legend filtered on displayed objects.. As said before, we can have so many combinations, with both continuous expressions on some parameters, conditional expressions, mixed with several markers in symbols, and with overlapping datadefined parameters on marker level, and advanced fields on symbol options... can be crazy unreadable.. or not. We probably need to remove those overlapping features in GUI, and redesign the GUI using labeling dialog model (small widgets with colors when activated) to make room for that new dynamic legend. So, if some of you have ideas on how to do that in a clean way, help would be nice. We can start a wiki page if you want to. Cheers all, Régis
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