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1. Heatmap

   

   map.txt

   n_0_0   , n_0_1   , ..., n_0_100
   ...
   n_2682_0, n_2682_1, ..., n_2682_100
   

   heatmap.gp

   set terminal png
   set output "heatmap.png"
   set size ratio 0.5
   set title "USD/CHF: PnL following daily trend, in pips"
   
   set xlabel "SL/TP - 200"
   set ylabel "Days since 2007-01-01"
   
   set tic scale 0
   
   set palette rgbformulae 22,13,10
   set palette negative
   
   set cbrange [-10000:10000]
   #unset cbtics
   
   set xrange [0:99.5]
   set yrange [0:2683]
   
   set view map
   
   splot 'map.txt' matrix with image
   

   Drawing the map

   $ gnuplot heatmap.gp && open heatmap.png