--- /dev/null
+#!/usr/bin/gnuplot -persist
+#
+#
+# G N U P L O T
+# Version 5.0 patchlevel 1 last modified 2015-06-07
+#
+# Copyright (C) 1986-1993, 1998, 2004, 2007-2015
+# Thomas Williams, Colin Kelley and many others
+#
+# gnuplot home: http://www.gnuplot.info
+# faq, bugs, etc: type "help FAQ"
+# immediate help: type "help" (plot window: hit 'h')
+
+set border 1
+set nogrid
+set key autotitles nobox reverse Left enhanced vert left at graph 0, screen 0.98
+
+set noytics
+unset colorbox
+
+set xtics 5 out nomirror rotate by -45
+
+set yrange[0:0.7]
+set size ratio 0.3
+
+
+set style arrow 1 heads fill size screen .02,15 lc 'gray'
+set style arrow 2 nohead lc 'gray'
+
+_w = 1280
+_h = (_w * 0.39) * 2
+
+# a helper function
+max(a, b) = (a > b) ? a : b
+
+symbols_distances_data = 'symbols_distances_defaults.log'
+
+# Some other example
+#symbols_distances_data = 'symbols_distances_optimistic.log'
+#symbols_distances_data = 'symbols_distances_codex.log'
+#symbols_distances_data = 'symbols_distances_savemysugar.log'
+
+set terminal unknown
+
+plot symbols_distances_data using 7:9
+call_setup_time_min = GPVAL_DATA_X_MAX
+call_setup_time_max = GPVAL_DATA_Y_MAX
+
+plot symbols_distances_data using 0:20
+num_symbols = GPVAL_DATA_X_MAX + 1
+dot_distance_min = GPVAL_DATA_Y_MIN
+EOM_distance_min = GPVAL_DATA_Y_MAX
+
+plot symbols_distances_data using 0:16
+symbol_distance_min = GPVAL_DATA_X_MIN
+inter_call_distance = GPVAL_DATA_Y_MIN
+
+symbol_distance = 2 * (call_setup_time_max - call_setup_time_min)
+call_position = dot_distance_min - inter_call_distance
+
+max_x = EOM_distance_min + symbol_distance
+
+get_val(val) = val eq "inf" ? max_x : val
+call_time(sym_dist) = abs(call_setup_time_max - first_call_time) + sym_dist + abs(second_call_time - call_setup_time_min)
+symbol_bar_height(val) = (num_symbols - $0) / (2 * num_symbols)
+
+set xrange [0:max_x + 3]
+set yrange[0:0.6]
+
+set terminal qt 0 enhanced font "Georgia,14" size _w,_h
+#set terminal pngcairo notransparent nocrop truecolor rounded enhanced font "Georgia,14" fontscale 1.0 size _w,_h
+#set output 'pulse_distance_modulation.png'
+
+set multiplot layout 2, 1 title "Relative symbol distances (receiver)" font "Georgia,14"
+
+first_call_time = call_setup_time_max
+second_call_time = call_setup_time_min
+
+set title "Minimum call distance"
+plot \
+ symbols_distances_data using (0):(0):(call_position):(call_position + call_time($16)):(0):(symbol_bar_height($0)):0 with boxxy \
+ fs solid noborder lc palette notitle, \
+ symbols_distances_data using ($20):(0.53):(get_val(strcol(22)) - $20):(0) with vectors arrowstyle 1 title 'receiver symbol interval', \
+ symbols_distances_data using ($20):(0):(0):(0.55) with vectors arrowstyle 2 notitle, \
+ symbols_distances_data using ($20 + symbol_distance / 2):(0.55):(strcol(11)) with labels font "Courier,12" notitle, \
+
+first_call_time = call_setup_time_min
+second_call_time = call_setup_time_max
+
+set title "Maximum call distance"
+replot
+
+unset multiplot