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-rw-r--r--pyspike/cython/python_backend.py12
1 files changed, 8 insertions, 4 deletions
diff --git a/pyspike/cython/python_backend.py b/pyspike/cython/python_backend.py
index 830dc69..69a420f 100644
--- a/pyspike/cython/python_backend.py
+++ b/pyspike/cython/python_backend.py
@@ -399,10 +399,14 @@ def coincidence_python(spikes1, spikes2, t_start, t_end, max_tau):
st[0] = t_start
st[len(st)-1] = t_end
- c[0] = c[1]
- c[len(c)-1] = c[len(c)-2]
- mp[0] = mp[1]
- mp[len(mp)-1] = mp[len(mp)-2]
+ if N1 + N2 > 0:
+ c[0] = c[1]
+ c[len(c)-1] = c[len(c)-2]
+ mp[0] = mp[1]
+ mp[len(mp)-1] = mp[len(mp)-2]
+ else:
+ c[0] = 1
+ c[1] = 1
return st, c, mp