# # Nonlinear color axis # Confirm equivalence of "set log cb" and # "set nonlinear cb via log10(z) inv 10**z" # set style function pm3d set palette cubehelix negative unset key set title offset 0, -3 set view 65, 34, 1.00627, 1.41667 unset border unset xtics; unset ytics set cbtics add (450) offset -0.5,0 unset mcbtics set isosamples 20, 20 set xyplane at 0 set xrange [ -2.00 : 6.00 ] set yrange [ -5.00 : 5.00 ] set zrange [ -50.0 : 450. ] set cbrange [ 0.100 : 450. ] set multiplot layout 1,3 # Linear colors # set title "Linear cb axis" set ztics set border 16 splot 5 + 100.*sin(sqrt(x**2+y**2))/(x**2+y**2) # Log-scale colors # set title "set log cb" set logscale cb 10 unset ztics unset border replot # Nonlinear color axis (log scale) # set title "set nonlinear cb\nvia log10(z) inv 10**z" unset log cb set nonlinear cb via log10(z) inverse 10**z set cbtics log replot unset multiplot pause -1 " to continue" reset