From dad5d8f733f09942c703daf9a6e102803e3dbfc6 Mon Sep 17 00:00:00 2001
From: Pietro Zambelli <peter.zamb@gmail.com>
Date: Tue, 4 Mar 2014 16:56:56 +0000
Subject: [PATCH] Detect range of the image using bottleneck if available

---
 pyqtgraph/imageview/ImageView.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pyqtgraph/imageview/ImageView.py b/pyqtgraph/imageview/ImageView.py
index bf415bb3..c7c3206e 100644
--- a/pyqtgraph/imageview/ImageView.py
+++ b/pyqtgraph/imageview/ImageView.py
@@ -33,6 +33,11 @@ from .. import debug as debug
 
 from ..SignalProxy import SignalProxy
 
+try:
+    from bottleneck import nanmin, nanmax
+except ImportError:
+    from numpy import nanmin, nanmax
+
 #try:
     #from .. import metaarray as metaarray
     #HAVE_METAARRAY = True
@@ -526,7 +531,7 @@ class ImageView(QtGui.QWidget):
             sl = [slice(None)] * data.ndim
             sl[ax] = slice(None, None, 2)
             data = data[sl]
-        return data.min(), data.max()
+        return nanmin(data), nanmax(data)
 
     def normalize(self, image):
         """