# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'sharpen.1.png'
set grid nopolar
set grid xtics nomxtics noytics nomytics noztics nomztics nortics nomrtics \
 nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid layerdefault   linecolor rgb "gray"  linewidth 0.200 dashtype solid,  linecolor rgb "gray"  linewidth 0.200 dashtype solid
set key title "lgamma(x)" enhanced   center
set key fixed right center vertical Right noreverse enhanced autotitle nobox
set key noinvert samplen 0 spacing 1 width 0 height 0
set samples 300, 300
set style data lines
set xtics  norangelimit 1 
set trange [ * : * ] noreverse nowriteback
set urange [ * : * ] noreverse nowriteback
set vrange [ * : * ] noreverse nowriteback
set xrange [ -10.0000 : 2.00000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ -15.0000 : 5.00000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
NO_ANIMATION = 1
## Last plot was a multiplot
# saved multiplot
set multiplot layout 2,1 title "Effect of 'sharpen' filter"
plot lgamma(x) title "no filters"
if (GPVAL_VERSION >= 6.0) {;    plot lgamma(x) sharpen title "  sharpen";} else {;    set label 1 center at graph 0.5, 0.5 "This copy of gnuplot does not support 'sharpen'";    unset key; plot NaN;}
unset multiplot