38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Demonstrates selecting plot curves by mouse click
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"""
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import initExample ## Add path to library (just for examples; you do not need this)
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import pyqtgraph as pg
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from pyqtgraph.Qt import QtCore, QtGui
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import numpy as np
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win = pg.plot()
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win.setWindowTitle('pyqtgraph example: Plot data selection')
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curves = [
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pg.PlotCurveItem(y=np.sin(np.linspace(0, 20, 1000)), pen='r', clickable=True),
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pg.PlotCurveItem(y=np.sin(np.linspace(1, 21, 1000)), pen='g', clickable=True),
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pg.PlotCurveItem(y=np.sin(np.linspace(2, 22, 1000)), pen='b', clickable=True),
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]
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def plotClicked(curve):
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global curves
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for i,c in enumerate(curves):
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if c is curve:
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c.setPen('rgb'[i], width=3)
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else:
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c.setPen('rgb'[i], width=1)
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for c in curves:
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win.addItem(c)
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c.sigClicked.connect(plotClicked)
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## Start Qt event loop unless running in interactive mode or using pyside.
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if __name__ == '__main__':
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import sys
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if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
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QtGui.QApplication.instance().exec_()
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