Add `plot_statistics_one.py`

plot_statistics_one.py

+import json
+import math
+import matplotlib.pyplot as plt
+
+SHOW_TARGET_RECOMPUTATION = False
+
+with open('data.json') as f:
+    data = json.load(f)
+
+with open('data_constant_difficulty.json') as f:
+    dataConstantDifficulty = json.load(f)
+
+fig, targetsAxis = plt.subplots()
+fig.subplots_adjust(right = 0.8)
+fig.subplots_adjust(bottom = 0.4)
+compressedScoreAxis = targetsAxis.twinx()
+axes = [targetsAxis, targetsAxis.twinx(), compressedScoreAxis, targetsAxis.twinx(), compressedScoreAxis]
+
+targets = data['targets']
+
+for x, (target, nextTarget) in enumerate(zip(targets, targets[1:])):
+    if nextTarget < target:
+        firstTargetDecreaseCurve = plt.axvline(x = x, color = 'purple', label = 'first target decrease')
+        break
+
+targetRecomputationCurve = []
+if SHOW_TARGET_RECOMPUTATION:
+    for x in range(0, len(targets), 2016):
+        targetRecomputationCurve = [plt.axvline(x = x, alpha = 0.1, label = 'target recomputation')]
+
+for x, (target, nextTarget) in enumerate(zip(targets, targets[1:])):
+    if nextTarget > target:
+        targetIncreaseCurve = plt.axvline(x = x, alpha = 0.5, color = 'red', label = 'target increase')
+
+axesColors = ['blue', 'green', 'brown', 'orange', 'brown']
+axesLabels = ['targets', 'compressed blockchain size (in blocks)', 'compressed blockchain score', 'constant difficulty compressed blockchain size (in blocks)', 'constant difficulty compressed blockchain score']
+axesYValues = [targets, data['compressSize'], data['compressScore'], dataConstantDifficulty['compressSize'], dataConstantDifficulty['compressScore']]
+
+curves = []
+for curvesIndex, (axis, color, label, yValues) in enumerate(zip(axes, axesColors, axesLabels, axesYValues)):
+    dashes = (None, None) if curvesIndex != 4 else [1, 25]
+    alpha = 1 if curvesIndex != 3 else 0.5
+    curves += axis.plot(yValues, label = label, color = color, dashes = dashes, alpha = alpha)
+
+targetsAxis.set_yscale('log', base=2)
+
+axes[2].spines.right.set_position(('axes', 1.1))
+axes[2].set_yscale('log')
+
+axes[-2].spines.right.set_position(('axes', 1.2))
+
+legendNewLine = targetsAxis.plot([], [], color='none', label=' ')
+curves.insert(-2, legendNewLine[0])
+
+curves += legendNewLine + targetRecomputationCurve + [firstTargetDecreaseCurve] + [targetIncreaseCurve]
+labels = [curve.get_label() for curve in curves]
+
+plt.legend(curves, labels, loc='upper center', framealpha=1, bbox_to_anchor=(0.5, -0.125))
+
+targetsAxis.set_xlabel('Block height')
+
+for ax, color in zip(axes, axesColors):
+    ax.tick_params(axis='y', colors=color)
+
+title = 'Variable difficulty Bitcoin compressed blockchain evolution'
+plt.title(title)
+
+#plt.show()
+fig.set_size_inches((11.2, 7.5), forward=False)
+plt.savefig(f'{title.lower().replace(" ", "_")}.svg')