# HG changeset patch
# User Chris Cannam
# Date 1439391718 -3600
# Node ID 5acce45e2ec6442a356fca1b9b08cc089d9a1673
# Parent  506f57984407224f2226f44c59d7ce4b06e41ede
Avoid NaN in empty notes in template matrix

diff -r 506f57984407 -r 5acce45e2ec6 src/LiveInstruments.cpp
--- a/src/LiveInstruments.cpp	Wed Aug 12 15:03:30 2015 +0100
+++ b/src/LiveInstruments.cpp	Wed Aug 12 16:01:58 2015 +0100
@@ -77,7 +77,9 @@
         for (auto &d: t.data) {
             float sum = 0.f;
             for (auto v: d) sum += v;
-            for (auto &v: d) v /= sum;
+            if (sum > 0.f) {
+                for (auto &v: d) v /= sum;
+            }
         }
     }