You can compute a color string using PostgreSQL string functions: SELECT percentage || ‘ 0 0’ AS color FROM …
Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Do Wi Sent: Sunday, June 22, 2014 3:50 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] color attribute question hi! i have this scenario: i have a column in my postgis table which contains a double representing a percentage. i want to color my polygons in a gradient fashion based on that number. the docs states three ways to specify color: 1. three [1-255] numbers 2. hex string 3. [attribute] but the attribute must be a string by itself in the same format as options 1 or 2. how can i achieve something like COLOR [percentage]*255 0 0 or COLOR [percentage] 0 0 if percentageis already 0..255 for a red gradient for example? thanks allot!
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