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Re: Color question
Ok, here is some sample code that will hopefully demonstrate
problem of grainy colors using TV on a postscript device. You
will need a color postscript printer to verify this.
DEVICE, Bits_Per_Pixel=8, /Color
TEK_COLOR ; or create your own discrete colormap
FOR i=0,999 DO bar(*,i)=i*9/1000
TV, bar, /Device
PLOT, INDGEN(10), Color=7, Charthick=3, Thick=5, /Noerase
Print it out and you should see that the plot is a "pure"
yellow but the bar yellow is "grainy."
I guess there is a difference between a plot and an image
on a postscript device. Plots seem to use filled polygons
(which give pure colors) while images appear to use pixels