49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
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"""
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Demonstrates the usage of DateAxisItem in a layout created with Qt Designer.
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The spotlight here is on the 'setAxisItems' method, without which
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one would have to subclass plotWidget in order to attach a dateaxis to it.
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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 sys
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import time
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import numpy as np
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from PyQt5 import QtWidgets, QtCore, uic
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import pyqtgraph as pg
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pg.setConfigOption('background', 'w')
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pg.setConfigOption('foreground', 'k')
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BLUE = pg.mkPen('#1f77b4')
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Design, _ = uic.loadUiType('DateAxisItem_QtDesigner.ui')
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class ExampleApp(QtWidgets.QMainWindow, Design):
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def __init__(self):
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super().__init__()
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self.setupUi(self)
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now = time.time()
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# Plot random values with timestamps in the last 6 months
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timestamps = np.linspace(now - 6*30*24*3600, now, 100)
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self.curve = self.plotWidget.plot(x=timestamps, y=np.random.rand(100),
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symbol='o', symbolSize=5, pen=BLUE)
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# 'o' circle 't' triangle 'd' diamond '+' plus 's' square
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self.plotWidget.setAxisItems({'bottom': pg.DateAxisItem()})
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self.plotWidget.showGrid(x=True, y=True)
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app = QtWidgets.QApplication(sys.argv)
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app.setStyle(QtWidgets.QStyleFactory.create('Fusion'))
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app.setPalette(QtWidgets.QApplication.style().standardPalette())
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window = ExampleApp()
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window.setWindowTitle('pyqtgraph example: DateAxisItem_QtDesigner')
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window.show()
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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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app.exec_()
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