From b30ab69ad223d9cb0430436220c1d499d413ee2c Mon Sep 17 00:00:00 2001
From: marcel <marcel.paffrath@rub.de>
Date: Mon, 21 Aug 2017 15:33:00 +0200
Subject: [PATCH] [bugfix] teach comparison to cope without pick

---
 pylot/core/util/widgets.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pylot/core/util/widgets.py b/pylot/core/util/widgets.py
index 08b8e003..87978ea1 100644
--- a/pylot/core/util/widgets.py
+++ b/pylot/core/util/widgets.py
@@ -271,6 +271,10 @@ class ComparisonDialog(QDialog):
         # _axes.cla()
         station = self.plotprops['station']
         phase = self.plotprops['phase']
+        if not phase in self.data.comparison[station]:
+            _axes.set_title('No pick found for phase {}.'.format(phase))
+            self.canvas.draw()
+            return
         pdf = self.data.comparison[station][phase]
         x, y, std, exp = pdf.axis, pdf.data, pdf.standard_deviation(), \
                          pdf.expectation()