Re: [Gnuplot-info] set palette maxcolors different behavior in 5.0?

[Patrick A. <pat...@Co...>]

> 
> Moreland gives the generating equations for the MSH color space used
> to generate the palette you started with.  You could either use these to
> describe a continuous palette using "set palette functions" or you could
> contribute a new bit of code to select the MSH colorspace as an alternative
> to RGB/CMY/HSV/YIQ/etc.   Either way the "maxcolors" option would then
> work to sample from a continuous palette.
> 
> Here is a quick try at defining a similar (but not exact) continuous palette:
> 
>         R(x) = 0.2 + 0.8 * sin(x*2.2)
>         B(x) = 0.2 + 0.8 * sin(0.9 + x*2.2)
>         G(x) = 0.3 + 0.83 * sin(x * 3.) - 0.4*x
>         set palette functions R(gray), G(gray), B(gray)
>         set palette maxcolors 5
>         test palette
> 
> If those continuous functions are not close enough to the Moreland palette,
> you can replace them with the equations from the paper.
> 
>     Ethan
> 

Ok, thanks for the info. It does seem that the 'x11' terminal is doing
some sort of simple interpolation on the 256 points to honor the
maxcolors 5 setting. This should be trivial to implement for the other
terminals, but I won't push the issue any more.