fix error: threshold to be returned by refine_channel

locklost/plugins/refine.py

@@ -13,8 +13,9 @@ from .. import data
 def refine_time(event):
     """Refine lock loss event time
 
+    Save refined time to event, create tag and graphs
+
     """
-    gps = event.transition_gps
     refined_gps = None
 
     # find indicator channel to use based on guardian state
@@ -24,7 +25,8 @@ def refine_time(event):
 
     window = config.REFINE_WINDOW
 
-    refined_gps = refine_channel(
+    # find threshold and refined time using indicator channel
+    threshold, refined_gps = refine_channel(
         event,
         params,
         window,
@@ -48,12 +50,11 @@ def refine_time(event):
     )
 
 
-def refine_channel(event, params, window):
-    """Refine lockloss event time using channel specified 
+def refine_channel(event, params, window, refined_gps=None, threshold=None):
+    """Refine lockloss event time using channel specified
 
     """
     gps = event.transition_gps
-    refined_gps = None
 
     channels = [
         params['CHANNEL'],
@@ -92,13 +93,16 @@ def refine_channel(event, params, window):
             ind = np.min(inds)
             refined_gps = buf.tarray[ind]
             logging.info("refined time: {}".format(refined_gps))
-            return refined_gps
-
         else:
             logging.info("no threshold crossings, unable to resolve time")
 
+    return threshold, refined_gps
+
 
 def plot_indicators(event, params, refined_gps=None, threshold=None):
+    """Create graphs showing indicators of refined time
+
+    """
     t0 = event.transition_gps
     trans = event.transition_index