1# -*- coding: utf-8 -*-
2"""
3ViewBox is the general-purpose graphical container that allows the user to
4zoom / pan to inspect any area of a 2D coordinate system.
5
6This example demonstrates many of the features ViewBox provides.
7"""
8
9import initExample ## Add path to library (just for examples; you do not need this)
10
11import pyqtgraph as pg
12from pyqtgraph.Qt import QtCore, QtGui
13import numpy as np
14
15x = np.arange(1000, dtype=float)
16y = np.random.normal(size=1000)
17y += 5 * np.sin(x/100)
18
19win = pg.GraphicsLayoutWidget(show=True)
20win.setWindowTitle('pyqtgraph example: ____')
21win.resize(1000, 800)
22win.ci.setBorder((50, 50, 100))
23
24sub1 = win.addLayout()
25sub1.addLabel("<b>Standard mouse interaction:</b><br>left-drag to pan, right-drag to zoom.")
26sub1.nextRow()
27v1 = sub1.addViewBox()
28l1 = pg.PlotDataItem(y)
29v1.addItem(l1)
30
31
32sub2 = win.addLayout()
33sub2.addLabel("<b>One-button mouse interaction:</b><br>left-drag zoom to box, wheel to zoom out.")
34sub2.nextRow()
35v2 = sub2.addViewBox()
36v2.setMouseMode(v2.RectMode)
37l2 = pg.PlotDataItem(y)
38v2.addItem(l2)
39
40win.nextRow()
41
42sub3 = win.addLayout()
43sub3.addLabel("<b>Locked aspect ratio when zooming.</b>")
44sub3.nextRow()
45v3 = sub3.addViewBox()
46v3.setAspectLocked(1.0)
47l3 = pg.PlotDataItem(y)
48v3.addItem(l3)
49
50sub4 = win.addLayout()
51sub4.addLabel("<b>View limits:</b><br>prevent panning or zooming past limits.")
52sub4.nextRow()
53v4 = sub4.addViewBox()
54v4.setLimits(xMin=-100, xMax=1100,
55             minXRange=20, maxXRange=500,
56             yMin=-10, yMax=10,
57             minYRange=1, maxYRange=10)
58l4 = pg.PlotDataItem(y)
59v4.addItem(l4)
60
61win.nextRow()
62
63sub5 = win.addLayout()
64sub5.addLabel("<b>Linked axes:</b> Data in this plot is always X-aligned to<br>the plot above.")
65sub5.nextRow()
66v5 = sub5.addViewBox()
67v5.setXLink(v3)
68l5 = pg.PlotDataItem(y)
69v5.addItem(l5)
70
71sub6 = win.addLayout()
72sub6.addLabel("<b>Disable mouse:</b> Per-axis control over mouse input.<br>"
73              "<b>Auto-scale-visible:</b> Automatically fit *visible* data within view<br>"
74              "(try panning left-right).")
75sub6.nextRow()
76v6 = sub6.addViewBox()
77v6.setMouseEnabled(x=True, y=False)
78v6.enableAutoRange(x=False, y=True)
79v6.setXRange(300, 450)
80v6.setAutoVisible(x=False, y=True)
81l6 = pg.PlotDataItem(y)
82v6.addItem(l6)
83
84if __name__ == '__main__':
85    pg.exec()
86