[QGIS-trac] Re: [Quantum GIS] #2369: Cannot change column for existing graduated (or categorized) symbology

[Quantum GIS]

#2369: Cannot change column for existing graduated (or categorized) symbology
-----------------------------------------------------+----------------------
        Reporter:  sowelu                            |         Owner:  nobody       
            Type:  enhancement                       |        Status:  new          
        Priority:  major: does not work as expected  |     Milestone:  Version 1.5.0
       Component:  Symbology                         |       Version:  HEAD         
      Resolution:                                    |      Keywords:               
Platform_version:  ubuntu 9.10                       |      Platform:  All          
        Must_fix:  No                                |   Status_info:  0            
-----------------------------------------------------+----------------------
Comment (by ccrook):

 Also found this is a problem.  Looks like it was considered in the code
 (there are commented out connections signals when the data columns is
 changed, though there is no corresponding slot coded that I can see
 (qgsgraduatedsymbolrendererv2widget.cpp).

 I think that this is a necessary use-case - setting up classification
 ranges and symbology can take significant user input and it is reasonable
 to want to change the symbology to use a different columns (typically in a
 cross-tab type data set, with columns for a number of different,
 equivalent items)

 Currently workaround is to save the project, edit the column name in the
 .qgs project file, and reload.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/2369#comment:1>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats