On the way to stable magnitude determination, still buggy!

pylot/core/analysis/magnitude.py

@@ -6,7 +6,7 @@ Revised/extended summer 2017.
 
 :author: Ludger Küperkoch / MAGS2 EP3 working group
 """
-
+import pdb
 import matplotlib.pyplot as plt
 import numpy as np
 import obspy.core.event as ope
@@ -381,8 +381,13 @@ class MomentMagnitude(Magnitude):
             # NLLoc: time_weight = 0 => do not use onset!
             if a.time_weight == 0:
                 continue
-            pick = a.pick_id.get_referred_object()
             station = pick.waveform_id.station_code
+            if len(self.stream) <= 2:
+                print("Station:", station)
+                print("WARNING: No instrument corrected data available, \
+                       no magnitude calculation possible! Go on.")
+                continue
+            pick = a.pick_id.get_referred_object()
             scopy = self.stream.copy()
             wf = scopy.select(station=station)
             if not wf: