From efed2282a74d97caf64f9ef3d68a23cfa30fc445 Mon Sep 17 00:00:00 2001
From: pcain <pcain@usgs.gov>
Date: Wed, 25 Aug 2021 08:53:03 -0600
Subject: [PATCH] add_empty_channel = True for derived inputs

---
 geomagio/DerivedTimeseriesFactory.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geomagio/DerivedTimeseriesFactory.py b/geomagio/DerivedTimeseriesFactory.py
index 648a33f9..273b18dd 100644
--- a/geomagio/DerivedTimeseriesFactory.py
+++ b/geomagio/DerivedTimeseriesFactory.py
@@ -99,7 +99,7 @@ class DerivedTimeseriesFactory(TimeseriesFactory):
                 channels=missing_inputs,
                 type=data_type,
                 interval=interval,
-                add_empty_channels=False,
+                add_empty_channels=True,
             )
         output_timeseries = Stream()
         for channel in channels:
-- 
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