[Gnuplot-info] logscale cb for 2d plots

[Kevin M. <km...@et...>]

Does anyone know if it is possible to use 'set logscale cb' to color a
set of 2d plots?

I have attached a script that attempts to do this. The problem I am
running into is that the colors on the logscaled color bar do not
match up with the line colors. They do if I revert to a linear cb
scale but I would really like to keep the cb scale logarithmic. For
example, the cb=0.1 line (the middle one) should be purple but it is
orange.

I have tried running this on v4.4, v4.42 and v4.5(dev) and I get the
same results.

The code is below and I attached a file as well. Any help is most appreciated.

Regards,
Kevin McPeak

# Gnuplot script file for attempting to use 'set logscale cb' for 2d plots

reset
set term windows color

set size 0.9,1.0
set origin 0,0

set logscale cb 10
set palette model RGB rgbformulae 7,5,15
set cbrange [0.01:10]

# Line Styles
set style line 1 lt -1 lw 2 lc palette cb 0.05
set style line 2 lt -1 lw 2 lc palette cb 0.1
set style line 3 lt -1 lw 2 lc palette cb 8

set lmargin 7
set rmargin 0.5
set tmargin 1
set bmargin 3

set colorbox vertical user origin 0.9, 0.16 size 0.02,0.80
set cblabel "cb" rotate by 90 offset -4, 0

unset label                            # remove any previous labels
set mxtics 5
set xtics 0.25
set ytics 0.25
set mytics 5
set pointsize 2
set xr [0:1]
set yr [0:1]

a(x) = 0.5*x
b(x) = (0.5*x)+0.1
c(x) = (0.5*x)+0.2

plot a(x) title 'cb=0.05' ls 1, b(x) title 'cb=0.1' ls 2, c(x) title 'cb=8' ls 3

reset

# End

-- 
Kevin McPeak Ph.D.
Postdoctoral Researcher
ETH Zürich
Optical Materials Engineering Laboratory
Universitaetsstrasse 6, CNB F121
CH-8092 Zurich, Switzerland
Voice: +41 44 632 6594
Email: km...@et...