Merge branch 'develop'0.3.0

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diff --git a/examples/profiles.py b/examples/profiles.py
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+""" profiles.py
+
+Simple example showing some functionality of distance profiles.
+
+Copyright 2015, Mario Mulansky <mario.mulansky@gmx.net>
+
+Distributed under the BSD License
+"""
+
+
+from __future__ import print_function
+
+import pyspike as spk
+
+spike_trains = spk.load_spike_trains_from_txt("PySpike_testdata.txt",
+                                              edges=(0, 4000))
+
+##### ISI PROFILES #######
+
+# compute the ISI profile of the first two spike trains
+f = spk.isi_profile(spike_trains[0], spike_trains[1])
+
+# ISI values at certain points
+t = 1200
+print("ISI value at t =", t, ":", f(t))
+t = [900, 1100, 2000, 3100]
+print("ISI value at t =", t, ":", f(t))
+print("Average ISI distance:", f.avrg())
+print()
+
+# compute the multivariate ISI profile
+f = spk.isi_profile_multi(spike_trains)
+
+t = 1200
+print("Multivariate ISI value at t =", t, ":", f(t))
+t = [900, 1100, 2000, 3100]
+print("Multivariate ISI value at t =", t, ":", f(t))
+print("Average multivariate ISI distance:", f.avrg())
+print()
+print()
+
+# for plotting, use the get_plottable_data() member function, see plot.py
+
+
+##### SPIKE PROFILES #######
+
+# compute the SPIKE profile of the first two spike trains
+f = spk.spike_profile(spike_trains[0], spike_trains[1])
+
+# SPIKE distance values at certain points
+t = 1200
+print("SPIKE value at t =", t, ":", f(t))
+t = [900, 1100, 2000, 3100]
+print("SPIKE value at t =", t, ":", f(t))
+print("Average SPIKE distance:", f.avrg())
+print()
+
+# compute the multivariate SPIKE profile
+f = spk.spike_profile_multi(spike_trains)
+
+# SPIKE values at certain points
+t = 1200
+print("Multivariate SPIKE value at t =", t, ":", f(t))
+t = [900, 1100, 2000, 3100]
+print("Multivariate SPIKE value at t =", t, ":", f(t))
+print("Average multivariate SPIKE distance:", f.avrg())