added auto-ranging example

examples/PlotAutoRange.py

@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+
+## This example demonstrates the different auto-ranging capabilities of ViewBoxes
+
+
+import initExample ## Add path to library (just for examples; you do not need this)
+
+
+from pyqtgraph.Qt import QtGui, QtCore
+import numpy as np
+import pyqtgraph as pg
+
+#QtGui.QApplication.setGraphicsSystem('raster')
+app = QtGui.QApplication([])
+#mw = QtGui.QMainWindow()
+#mw.resize(800,800)
+
+win = pg.GraphicsWindow(title="Plot auto-range examples")
+win.resize(800,600)
+
+
+d = np.random.normal(size=100)
+d[50:54] += 10
+p1 = win.addPlot(title="95th percentile range", y=d)
+p1.enableAutoRange('y', 0.95)
+
+
+p2 = win.addPlot(title="Auto Pan Only")
+p2.setAutoPan(y=True)
+curve = p2.plot()
+def update():
+    t = pg.time()
+    
+    data = np.ones(100) * np.sin(t)
+    data[50:60] += np.sin(t)
+    global curve
+    curve.setData(data)
+    
+timer = QtCore.QTimer()
+timer.timeout.connect(update)
+timer.start(50)
+
+
+## Start Qt event loop unless running in interactive mode or using pyside.
+import sys
+if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
+    app.exec_()
+