From 7e096b9e8710d38bc424e02e66ee5375701803c3 Mon Sep 17 00:00:00 2001
From: Thomas Fillon <thomas@parisson.com>
Date: Wed, 19 Mar 2014 14:05:53 +0100
Subject: [PATCH] Analyzer/odf : fix NaN issue

---
 timeside/analyzer/odf.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/timeside/analyzer/odf.py b/timeside/analyzer/odf.py
index 3f157fc..c302445 100644
--- a/timeside/analyzer/odf.py
+++ b/timeside/analyzer/odf.py
@@ -104,7 +104,9 @@ class OnsetDetectionFunction(Analyzer):
 
         # Summation along the frequency axis
         odf_diff = S_diff.sum(axis=1)
-        odf_diff = odf_diff / np.median(odf_diff)  # Normalize
+        odf_median = np.median(odf_diff)
+        if odf_median:
+            odf_diff = odf_diff / odf_median  # Normalize
 
         odf = self.new_result(data_mode='value', time_mode='framewise')
         #odf.parameters = {'FFT_SIZE': self.FFT_SIZE}
-- 
2.39.5