[Qgis-developer] Multiple geometry columns per layer

Matthias Kuhn matthias.kuhn at gmx.ch
Thu Nov 29 06:32:21 PST 2012

I think rendering one at a time is enough (as in my first mail: one as 
the default to display), with time one could include fun stuff like LOD, 
subitems in the layer legend, or whatever somebody might come up with ( 
intersection etc).

More interesting for me is the possibility to access additional geometry 
columns from a plugin, and therefore having the dataProvider ready for this.

The idea of having multiple layers, pointing to the same table sounds 
interesting as well. This would probably mean separating the pretty 
strong linkage between layer (as representation) <=> table (as data), 
we've got now.


On 11/29/2012 03:21 PM, Nathan Woodrow wrote:
> But how would you render that? Even if you have three geometry columns 
> in one table are you expecting QGIS to be able to render them all in 
> one QgsVectorLayer in the canvas.  Or do you want a different layer in 
> QGIS for each column but that all point to the same database table?
> - Nathan

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