34 lines
877 B
Python
34 lines
877 B
Python
# -*- coding: utf-8 -*-
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"""
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Demonstrates basic use of ErrorBarItem
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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 QtGui, QtCore
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import numpy as np
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import pyqtgraph as pg
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import numpy as np
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pg.setConfigOptions(antialias=True)
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x = np.arange(10)
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y = np.arange(10) %3
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top = np.linspace(1.0, 3.0, 10)
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bottom = np.linspace(2, 0.5, 10)
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plt = pg.plot()
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plt.setWindowTitle('pyqtgraph example: ErrorBarItem')
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err = pg.ErrorBarItem(x=x, y=y, top=top, bottom=bottom, beam=0.5)
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plt.addItem(err)
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plt.plot(x, y, symbol='o', pen={'color': 0.8, 'width': 2})
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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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