# set terminal svg size 600,400 dynamic enhanced font 'arial,10' mousing name "pm3dcolors_2" butt dashlength 1.0 
# set output 'pm3dcolors.2.svg'
set format cb "%3.1f" 
unset key
set view map scale 1
set samples 101, 101
set isosamples 2, 2
set style function pm3d
set xtics  norangelimit 2 
unset ytics
unset ztics
set cbtics  norangelimit 0.1 
set title "set palette defined" 
set xrange [ -10.0000 : 10.0000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ 0.00000 : 1.00000 ] noreverse nowriteback
set rrange [ * : * ] noreverse writeback
set palette defined ( 0 0.05 0.05 0.2, 0.1 0 0 1, 0.3 0.05 0.9 0.4,\
     0.5 0.9 0.9 0, 0.7 1 0.6471 0, 0.8 1 0 0, 0.9 0.94 0.195 0.195,\
     1 1 0.8 0.8 )
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
g(x)=x
f(x)=(x+10)/20
NO_ANIMATION = 1
splot f(x)