# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 # set output 'key.6.png' set key at 0, 0, 0 right bottom horizontal Right noreverse enhanced autotitles box linetype -1 linewidth 1.000 set key noinvert samplen 0.2 spacing 1 width 0 height 0 set arrow 1 from -3, 0, 0 to 3, 0, 0 nohead back nofilled linetype -1 linewidth 1.000 set arrow 2 from 0, -3, 0 to 0, 3, 0 nohead back nofilled linetype -1 linewidth 1.000 set title "Key ( horiz bot right)" set xrange [ -15.0000 : 5.00000 ] noreverse nowriteback plot x,-x