Make 3-layer group act like RGB image bands

Discussion created by tim.haverland_noaa on Aug 27, 2012
Latest reply on Sep 28, 2012 by tim.haverland_noaa

Let's say I have three polygon layers. Does anyone know of a way to make each layer act as a color band (layer1=red, layer2=green, layer3=blue) and when overlayed, have the resulting color be the combination of the three bands, much like the bands of an RGB image work?

I thought about transforming all of my data values for each layer to the range 0-255, then somehow using those values to "calculate" the resulting color, but there's got to be an easier way!

I can't convert to individual rasters because my polygon layers are designed for animation (a set of polygons for each day).