# 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   lt 0 linecolor 0 linewidth 0.500,  lt 0 linecolor 0 linewidth 0.500
set key title "lgamma(x)" 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 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
plot lgamma(x) sharpen title "  sharpen"