Re: Custom data colors in a surface plot

[Micha B. <kri...@us...>]

.. but

> double stepR = abs(r1-r2)/dsize;

is > 0

Later in your loop:

> rgb.r = r1-i*stepR;

sgives value <= 0. These values will be clamped, because a color
component has values 0.0 <= comp_col <= 1.0;

Micha  
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