From 8fd7d4b670dd2a09e0012183b4d213246ca47974 Mon Sep 17 00:00:00 2001
From: Thomas Wang <17309187+datability-io@users.noreply.github.com>
Date: Mon, 22 Apr 2019 11:53:08 -0700
Subject: [PATCH] improve not rich tooltip (#7345)

---
 superset/viz.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/superset/viz.py b/superset/viz.py
index 026581e142..7607675e6b 100644
--- a/superset/viz.py
+++ b/superset/viz.py
@@ -1230,7 +1230,9 @@ class NVD3TimeSeriesViz(NVD3Viz):
         comparison_type = fd.get('comparison_type') or 'values'
         df = self.process_data(df)
         if comparison_type == 'values':
-            chart_data = self.to_series(df)
+            # Filter out series with all NaN
+            chart_data = self.to_series(df.dropna(axis=1, how='all'))
+
             for i, (label, df2) in enumerate(self._extra_chart_data):
                 chart_data.extend(
                     self.to_series(