From 736411b04284dbb0c859e925d7c8caba6a9de23b Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Thu, 24 Mar 2022 13:29:45 -0400
Subject: [PATCH] Clear ds line graphics on switch back to bars

---
 piker/ui/_ohlc.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/piker/ui/_ohlc.py b/piker/ui/_ohlc.py
index c6dbf67c..3887b9ba 100644
--- a/piker/ui/_ohlc.py
+++ b/piker/ui/_ohlc.py
@@ -599,8 +599,10 @@ class BarItems(pg.GraphicsObject):
             self._pi.removeItem(self)
 
             curve, ds = self.get_ds_line(ds=0)
+
             last_curve = self._ds_line
             assert last_curve is curve
+
             self._pi.addItem(curve)
             curve.show()
             curve.update()
@@ -619,6 +621,7 @@ class BarItems(pg.GraphicsObject):
             last_curve = self._ds_line
             assert last_curve is curve
             curve.hide()
+            curve.clear()
             self._pi.removeItem(curve)
 
             # XXX: is this actually any faster?