ModSim ass4 taddeus: Added comparison plot script.

modsim/ass4_taddeus/vibstring/plot_compare.py

+#!/usr/bin/env python
+from sys import argv
+from pylab import plot, xlabel, ylabel, show, savefig, ylim, legend
+
+# Collect data
+x = []
+seq = []
+par = []
+lines = open('compare.txt').readlines()[1:]
+
+for i in range(len(lines))[::3]:
+    n = int(lines[i][:-1])
+    s = float(lines[i + 1][:-1])
+    p = float(lines[i + 2][:-1])
+
+    # Use the minimum of all measurements
+    if len(x) and x[-1] == n:
+        if seq[-1] > s:
+            seq[-1] = s
+        if par[-1] > p:
+            par[-1] = p
+    else:
+        x.append(n)
+        seq.append(s)
+        par.append(p)
+
+# Plot and optionally save data
+plot(x, seq, 'o-', label='Sequentieel')
+plot(x, par, 'o-', label='Parallel (9 nodes)')
+ylim(ymin=0)
+legend()
+xlabel('Aantal afstandsstappen')
+ylabel('Tijd (s)')
+if len(argv) > 1:
+    savefig(argv[1])
+show()