[mapguide-trac] #465: Rendering enhancement: user-defined palettes for PNG8

[MapGuide Open Source]

#465: Rendering enhancement:  user-defined palettes for PNG8
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 Reporter:  jbirch             |         Owner:     
     Type:  enhancement        |        Status:  new
 Priority:  medium             |     Milestone:     
Component:  Rendering Service  |       Version:     
 Severity:  major              |    Resolution:     
 Keywords:                     |   External_id:     
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Comment (by jbirch):

 You start running into problems with this if you're using transparency or
 raster layers.  I wonder if the number of cases where enumerating the
 styles wouldn't be sufficient is large enough that you'd want to avoid
 implementing it as a partial solution (raises more questions than it's
 worth?)

 My preferred solution would be a tool that gridded the map at each visible
 scale range, visited each tile, and generated a custom palette for that
 scale range from the colours in those tiles.  Hopefully, there would be a
 way of tweaking this so that commonly occurring colours don't totally
 exclude uncommon but important (nothing else close to them) colours.

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Ticket URL: <https://trac.osgeo.org/mapguide/ticket/465#comment:2>
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