From eb3674f0d0e4663e8970604f88828e3f240bd88b Mon Sep 17 00:00:00 2001
From: Michael Hanke <michael.hanke@gmail.com>
Date: Mon, 16 May 2011 12:13:24 -0400
Subject: [PATCH] Fix div by zero prob.

---
 survey/makestats | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/survey/makestats b/survey/makestats
index 7b229b1..09b0c94 100755
--- a/survey/makestats
+++ b/survey/makestats
@@ -187,7 +187,10 @@ def mkpic_os_per_env(db, destdir):
             stats[os_family_rev[os]] += counts[os]
         total_count = np.sum(stats.values())
         for osf in stats:
-            stats[osf] = float(stats[osf]) / total_count
+            if not total_count:
+                stats[osf] = 0
+            else:
+                stats[osf] = float(stats[osf]) / total_count
         env_stats[env] = stats
     # make stacked barplot
     pl.figure(figsize=(6.4, 4.8))
-- 
2.39.2