From c87f43ed299cf64a1e064893832b5e8a98ea2a59 Mon Sep 17 00:00:00 2001
From: Tamas Gal <tgal@km3net.de>
Date: Sat, 12 Jan 2019 21:36:12 +0100
Subject: [PATCH] Check if rates are emtpy and skip if needed

---
 scripts/trigger_rates.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/trigger_rates.py b/scripts/trigger_rates.py
index 5670d1e..bc7a207 100755
--- a/scripts/trigger_rates.py
+++ b/scripts/trigger_rates.py
@@ -115,6 +115,9 @@ class TriggerRate(kp.Module):
         fig, ax = plt.subplots(figsize=(16, 4))
 
         for trigger, rates in self.trigger_rates.items():
+            if not rates:
+                self.log.warning("Empty rates, skipping...")
+                continue
             timestamps, trigger_rates = zip(*rates)
             ax.plot(timestamps, trigger_rates,
                     **self.styles[trigger],
-- 
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