Petr Mikulík
Gnuplot supports various plotting styles which require continuous palette, such as two-dimensional pm3d and image surfaces or one-dimensional colour-variable lines or points. Palettes can be defined in RGB, HSV, CMY, YIQ or XYZ models using pre-defined or analytical colour mapping formulae.
The examples below show the original default pm3d colour gradient by Petr Mikulík from Masaryk University, nice rgb schemes listed in “help palette rgbformulae” and gradients from the pm3dcolors.dem demo script.
f 21 22 23
f 23 28 3
f 30 31 32
f 3 11 6
f 33 13 10
f 34 35 36
pm3d01
pm3d02
pm3d03
pm3d04
pm3d05
pm3d06
pm3d07
pm3d08
pm3d09
pm3d10
pm3d11
pm3d12
pm3d13
pm3d14
pm3d15
pm3d20
pm3d21