Yes I agree this would be very handy and something I was thinking about how to tackle today. Larry has been working on some stuff for the data-defined labels to make it easier to use from the UI and the code so I'm thinking we can use the same code for that in the symbols.
I would also like to be able to bind controls together, things like fill and outline so they always stay in sync. I have a few ideas how this could work so I'm going to try and have a go at some stage, or at least draft up the idea more. - Nathan On Tue, Nov 27, 2012 at 6:35 PM, Andreas Neumann <a.neum...@carto.net>wrote: > Hi, > > In many of my projects I need to do several classifications for different > graphical variables, like fill-color, stroke-color, size, orientation, etc. > > As an example I need to represesent manholes where the symbol shape (SVG) > is based on manhole type, the symbol stroke colors based on the usage, and > the size based on dimensions. > > I know that it is currently possible to reach this goal by either > > * using the rule based renderer - it would result in a lot of rules or > refined rules - a lot of work > * or concatenating the three attribute values into one attribute and using > the unique value renderer - but this results in many, many combinations. > Too many classes to handle. > > So my question/suggestion: > > Can we introduce multiple parallel/simultaneous categorized > classifications where each attributes controls one visual variable? > > I don't know how one could display a legend then with such parallel > classifications ... but other than that it would be more convenient for the > user. > > There may also be technical issues making this impossible. > > Any thoughts on this? > > Andreas > > -- > -- > Andreas Neumann > Böschacherstrasse 10A > 8624 Grüt (Gossau ZH) > Switzerland > ______________________________**_________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/**mailman/listinfo/qgis-**developer<http://lists.osgeo.org/mailman/listinfo/qgis-developer> >
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