The Color Ramp plugin uses an underlying heightfield in addition to a color ramp file to generate RGBA images from single band datasets such as elevation or temperature.
Example usage:
<image name="color ramp" driver="colorramp">
<elevation name="readymap_elevation" driver="tms">
<url>http://readymap.org/readymap/tiles/1.0.0/9/</url>
</elevation>
<ramp>..\data\colorramps\elevation.clr</ramp>
</image>
Ramp files:
A file that defines how values match to colors. Each line should contain a value and the RGB color it’s mapped to with values in the range 0-255
For example:
0 255 0 0
1000 255 255 0
5000 0 0 255
Properties:
elevation: Definition of an elevation layer to sample. ramp: Path to the ramp file to use to color the layer.
Also see:
colorramp.earth sample in the repo tests folder.