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1. Cumulative Flow Chart

   

   loc.txt

   # date      iphone  common  ipad    xxx
   2010-02-08  9370       0       0       0    # iphone 1.0
   2010-04-22  9602       0       0       0    # iphone 2.0
   2010-06-03  9602    1354    4820       0    # ipad 1.0
   2010-10-07  9602    1869    5536       0    # ipad 2.0
   2011-03-01  8892    4041    9356    6046    # xxx 1.0
   2011-05-06  8648    5973    6960    6046    # iphone 3.0
   

   loc.gp

   set terminal png size 600, 350
   
   set output "loc.png"
   
   set title "Projects Lines of Code"
   set key left
   
   set timefmt "%Y-%m-%d"
   set format x "%Y-%m-%d"
   set grid
   
   set xdata time
   set xtics rotate by -45
   set xrange ["2010-03-01":"2011-06-01"]
   
   plot "loc.txt" using 1:($5+$4+$3+$2) title "xxx" with filledcurves y1=0 lt rgb "#cc3333", \
        "loc.txt" using 1:($4+$3+$2) title "iPad" with filledcurves y1=0 lt rgb "#cc9933", \
        "loc.txt" using 1:($3+$2) title "Common Lib" with filledcurves y1=0 lt rgb "#669933", \
        "loc.txt" using 1:2 title "iPhone" with filledcurves y1=0 lt rgb "#336699"
   

   Drawing the chart

   $ gnuplot loc.gp && open loc.png
   

2. 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