Hi, Has anyone worked on rasters with different levels of alpha transparency?
I am OK with bitonal/boolean images and setting a 'background' colour to transparent. I have also played (unsucessfully) with adding an alpha into an RGB foreground colour override. What I would like to do is have an overlay (eg flood-plain type) that has a 100% transparency on one background and then be able to set a variable (like 70%) transparency on the remainder of the image so that other raster mapping provides the background context. If I have an alpha setting in the original image is that then preserved in processing for the map request? Should I continue based on knowledge this approach will work or not? It could be converted to a vector but would add a lot to processing source data that I would rather avoid. Many thanks, Crispin -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Partial-Raster-Transparency-tp5059085.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapguide-users
