From 515ae5f6e3bf289e5e2656ff702006e191fdae5a Mon Sep 17 00:00:00 2001
From: Nils Nemitz <nils.nemitz@gmx.de>
Date: Sat, 17 Apr 2021 18:18:14 +0900
Subject: [PATCH] add axisOrder='col-major'

---
 pyqtgraph/graphicsItems/ColorBarItem.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyqtgraph/graphicsItems/ColorBarItem.py b/pyqtgraph/graphicsItems/ColorBarItem.py
index 7c4e9c2d..86b7e9c8 100644
--- a/pyqtgraph/graphicsItems/ColorBarItem.py
+++ b/pyqtgraph/graphicsItems/ColorBarItem.py
@@ -98,7 +98,7 @@ class ColorBarItem(PlotItem):
         self.axis.unlinkFromView()
         self.axis.setRange( self.values[0], self.values[1] )
 
-        self.bar = ImageItem()
+        self.bar = ImageItem(axisOrder='col-major')
         if self.horizontal:
             self.bar.setImage( np.linspace(0, 1, 256).reshape( (-1,1) ) )
             if label is not None: self.getAxis('bottom').setLabel(label)