# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'heatmap_points.2.png'
set dgrid3d 25,25 gauss  kdensity 3, 3
unset key
set label 1 "Heat map of point density " at screen 0.5, 0.93, 0 center norotate font ":Bold" front nopoint
set label 2 "set dgrid 25,25 gauss  kdensity 3, 3" at screen 0.5, 0.87, 0 center norotate front nopoint
set label 3 "assign all points equal weight" at screen 0.5, 0.82, 0 center norotate front nopoint
set label 4 "Score" at graph 1.1, 1.1, 0 center norotate back nopoint
set view map scale 1
set style data lines
set xtics border in scale 0,0 mirror norotate  autojustify
set xtics  norangelimit 10 
set ytics border in scale 0,0 mirror norotate  autojustify
set ytics  norangelimit 10 
set ztics border in scale 0,0 nomirror norotate  autojustify
set cbtics border in scale 0,0 mirror norotate  autojustify
set rtics border in scale 0,0 nomirror norotate  autojustify
set xrange [ * : * ] noreverse noextend
set yrange [ * : * ] noreverse noextend
set tmargin  4
set palette negative nops_allcF maxcolors 0 gamma 1.5 color model RGB 
set palette cubehelix start 0.5 cycles -1.5 saturation 1
NO_ANIMATION = 1
## Last datafile plotted: "mask_pm3d.dat"
splot 'mask_pm3d.dat' using 1:2:(1) with pm3d,       '' using 1:2:(1) with points lc "black" pt 7 ps 0.6 nogrid