[QGIS-trac] [Quantum GIS] #1503: Impose color gradient on unique vector symbol classification

[Quantum GIS]

#1503: Impose color gradient on unique vector symbol classification
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   Reporter:  jctull                           |              Owner:  nobody       
       Type:  enhancement                      |             Status:  new          
   Priority:  minor: annoyance or enhancement  |          Milestone:  Version 1.0.1
  Component:  Symbology                        |            Version:  HEAD         
   Keywords:                                   |   Platform_version:               
   Platform:  All                              |           Must_fix:  No           
Status_info:  0                                |  
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 It would be good to have the Unique Value symbology assignments have the
 option of producing a color gradient in addition to the default
 randomization of colors that now exists.

 Because the Graduated Symbol option that currently exists is limited to
 fields of integer or real format (which makes sense algorithmically as you
 have a numeric scale to sort), it is not possible to use a string field
 with the Graduated Symbol option. Extending this to somehow operate on
 string data would be one possibility, but the number of categories would
 have to be equal to the number of rows in the attribute table. This might
 be too clunky. Alternatively, start and end colors might be optional in
 the Unique Value symbology legend type. A gradient would be created
 between them based on the number of unique items.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/1503>
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