# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'lnGamma.1.png'
set border 895 front lt black linewidth 1.000 dashtype solid
unset cornerpoles
set grid nopolar
set grid xtics nomxtics ytics nomytics ztics nomztics nortics nomrtics \
 nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid vertical layerdefault   lt 0 linecolor 0 linewidth 1.000,  lt 0 linecolor 0 linewidth 1.000
unset key
set view 66, 304, 1.00286, 1.2
set samples 401, 401
set isosamples 400, 400
set style data lines
set xyplane at 0
set xtics border in scale 1,0.5 mirror norotate  offset character 0, -0.5, 0 autojustify
set xtics  norangelimit 1 
set ytics border in scale 1,0.5 mirror norotate  offset character 0, -0.5, 0 autojustify
set ytics  norangelimit 1 
set cbtics  norangelimit logscale autofreq 
set title "{/Times:Italic=16 Γ(x+iy) }{/Times:Normal=18  = exp(lnGamma(x + y*I)}" 
set title  offset character 0, 0.5, 0 font "" textcolor lt -1 norotate
set xlabel "{/Times:Italic=16 x}" 
set xlabel  offset character -3, -1, 0 font "" textcolor lt -1 norotate
set xrange [ -3.50000 : 3.50000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set ylabel "{/Times:Italic=16 iy}" 
set ylabel  offset character 5, -1, 0 font "" textcolor lt -1 rotate
set yrange [ -3.00000 : 3.00000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ 0.00000 : 8.00000 ] noreverse nowriteback
set cbrange [ 0.0100000 : 20.0000 ] noreverse nowriteback
set rrange [ * : * ] noreverse writeback
set logscale cb 10
set pm3d lighting primary 0.5 specular 0.2 spec2 0.4
set pm3d spotlight rgb 0xff0044 rot_x 50 rot_z 90 Phong 4.0
set palette negative nops_allcF maxcolors 0 gamma 2 color model RGB 
set palette cubehelix start 0 cycles 2 saturation 1
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
unset colorbox
Gamma(z) = exp(lnGamma(z))
NO_ANIMATION = 1
save_encoding = "utf8"
splot abs(Gamma(x + y*I)) with pm3d title "{/Times:Italic=16 Γ(x+iy)}"