Fix has_any_channels method

The has_any_channels method in TimeseriesUtility.py did not properly
handle streams with multiple traces with the same channel, but different
stations (or networks, or locations). It should work now.

geomagio/TimeseriesUtility.py

@@ -388,17 +388,20 @@ def has_any_channels(stream, channels, starttime, endtime):
     bool: True if any data found between starttime/endtime
     """
     # process if any channels have data not covering the time range
-    input_gaps = get_stream_gaps(stream=stream, channels=channels)
-    for channel in channels:
-        if channel not in input_gaps:
-            continue
-        channel_gaps = input_gaps[channel]
-        if len(channel_gaps) == 0:
-            # no gaps in channel
-            return True
-        for gap in channel_gaps:
-            if not (starttime >= gap[0] and starttime <= gap[1] and endtime < gap[2]):
-                # gap doesn't span channel
+    for trace in stream:
+        if trace.stats.channel in channels:
+            gaps = get_trace_gaps(trace)
+            if len(gaps) == 0:
+                # no gaps in trace;
+                # "any" critierion achieved for stream
+                return True
+            nodata = [
+                (starttime >= gap[0] and starttime <= gap[1] and endtime < gap[2])
+                for gap in gaps
+            ]
+            if not any(nodata):
+                # no gaps in trace span interval;
+                # "any" criterion achieved for stream
                 return True
     # didn't find any data
     return False