Add a script to plot histograms

scripts/plot_histogram.py

@@ -0,0 +1,27 @@
+#!/usr/bin/python
+
+"""This program shows `hyperfine` benchmark results as a histogram."""
+
+import argparse
+import json
+import matplotlib.pyplot as plt
+
+parser = argparse.ArgumentParser(description=__doc__)
+parser.add_argument("file", help="JSON file with benchmark results")
+parser.add_argument("--title", help="Plot title")
+args = parser.parse_args()
+
+with open(args.file) as f:
+    results = json.load(f)["results"]
+
+commands = [b["command"] for b in results]
+all_times = [b["times"] for b in results]
+
+plt.hist(all_times, label=commands, bins="auto", histtype="bar")
+plt.legend(prop={'family': ['Source Code Pro', 'Fira Mono', 'Courier New']})
+
+plt.xlabel("Time [s]")
+if args.title:
+    plt.title(args.title)
+
+plt.show()