Hi Anita, I was not sure on first message of Vincent, but now I'm sure, I'm the funder of such features ;-). I did not spoil that work before, because that took us a loooong time to validate the contract. We should have make it for 2.8 at start.. 2.10 will be the goal. Discussion with community is more than welcome of course!
What we need is : - use data defined widget used in labeling windows in symbology screens. This will be more consistent and was discussed previously on the list. I found some money for that, hope community still agrees - add graduated classification for size, with same classification options as for current renderer. This will be possible to set both color graduated legend and size varying legend that way, with legend enabled. - add a GUI assistant to help users define expressions for continuous size varying expressions. We currently have that in "advanced fields", which appears to be confusing to users here. We would like to plug that assistant with "label" expressions widgets. We only propose squaretail (= circle surface or exp 0.5), linear and flannery (exp 0.57) at start. If you know other interesting functions, feel free to submit. Flannery gives good results and is considered as better classification method by some cartographers. No objection to keep circle surface as default instead if you have other references. This topic needs precise mockups because it's not easy to understand interactions of datadefined tools on symbol / marker level from a UX point of view. - when using the GUI assistant or the graduated classification, we will enable a legend for mapcanvas and composer 's legend. That legend will be of this type [0] - we will also add test and documentation in english and french in qgis documentation. Please tell us how that sounds to you. Cheers, Régis [0] http://s14.postimage.org/3jr9kcmgh/muesure.png -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Data-defined-buttons-for-en-masse-size-and-rotation-tp5181954p5182425.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer