id summary reporter owner description type status priority milestone component version severity resolution keywords cc external_id 465 Rendering enhancement: user-defined palettes for PNG8 jbirch "Now that MapGuide supports 8bit PNG, there is a use case for also supporting custom palettes. Both MapServer and GeoServer have implemented this functionality. I haven't tested the experimental tiled PNG 8 support, but I have seen other implementations where small differences between the individually re-mapped tiles make the boundaries between the images visually distracting. Ensuring consistent tiles would be the primary incentive to add support for paletted images. However, there are potential benefits for non-tiled applications as well: - It may allow legend images to be transformed using a known palette so the legend actually matches the map. - If performance numbers are similar to the geoserver ones, some situations will see considerable performance gains: [http://geoserver.org/display/GEOSDOC/Paletted+images+tutorial GeoServer Paletted Images] - In some cases, this will allow carto-geeks more control over map presentation I believe that an ideal implementation of this would allow for the use of separate palettes for each zoom level within a map or tiled map group. " enhancement new medium Rendering Service major