pyqtgraph/examples/linkedViews.py

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# -*- coding: utf-8 -*-
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"""
This example demonstrates the ability to link the axes of views together
Views can be linked manually using the context menu, but only if they are given
names.
"""
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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
app = pg.mkQApp("Linked Views Example")
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#mw = QtGui.QMainWindow()
#mw.resize(800,800)
x = np.linspace(-50, 50, 1000)
y = np.sin(x) / x
win = pg.GraphicsLayoutWidget(show=True, title="pyqtgraph example: Linked Views")
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win.resize(800,600)
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win.addLabel("Linked Views", colspan=2)
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win.nextRow()
p1 = win.addPlot(x=x, y=y, name="Plot1", title="Plot1")
p2 = win.addPlot(x=x, y=y, name="Plot2", title="Plot2: Y linked with Plot1")
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p2.setLabel('bottom', "Label to test offset")
p2.setYLink('Plot1') ## test linking by name
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## create plots 3 and 4 out of order
p4 = win.addPlot(x=x, y=y, name="Plot4", title="Plot4: X -> Plot3 (deferred), Y -> Plot1", row=2, col=1)
p4.setXLink('Plot3') ## Plot3 has not been created yet, but this should still work anyway.
p4.setYLink(p1)
p3 = win.addPlot(x=x, y=y, name="Plot3", title="Plot3: X linked with Plot1", row=2, col=0)
p3.setXLink(p1)
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p3.setLabel('left', "Label to test offset")
#QtGui.QApplication.processEvents()
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if __name__ == '__main__':
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pg.exec()
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