[ncl-talk] How to define the size of color box when drawing a contour map using res at cnFillMode= "RasterFill" ?

[heaven_bird334]

Dear All,
         Is there anyone know how to define the size of the color box when drawing a contour map using res at cnFillMode= "RasterFill" ?
I'm draw a RasterFill map, but the defalt size of the color box are too big (bigger than the resolution of input data), so I want to make the color box smaller. However, it seems there are no instructions about such kind of setting in the following web site: http://www.ncl.ucar.edu/Applications/raster.shtml . 
        Any information or help is grateful.
Best Regards,
Xiaofeng
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