From ae9bce665c9d1a3e91f02cec0a08be7e6c332727 Mon Sep 17 00:00:00 2001
From: HashSplat <jtengel08@gmail.com>
Date: Wed, 9 Aug 2017 14:36:50 -0400
Subject: [PATCH] Fixed issue where setData only updated opts if data is given

---
 pyqtgraph/graphicsItems/PlotDataItem.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pyqtgraph/graphicsItems/PlotDataItem.py b/pyqtgraph/graphicsItems/PlotDataItem.py
index d7ea5100..c5b642fb 100644
--- a/pyqtgraph/graphicsItems/PlotDataItem.py
+++ b/pyqtgraph/graphicsItems/PlotDataItem.py
@@ -442,6 +442,8 @@ class PlotDataItem(GraphicsObject):
         
 
         if y is None:
+            self.updateItems()
+            profiler('update items')
             return
         if y is not None and x is None:
             x = np.arange(len(y))