101 lines
2.4 KiB
Python
101 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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This example demonstrates a very basic use of flowcharts: filter data,
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displaying both the input and output of the filter. The behavior of
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he filter can be reprogrammed by the user.
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Basic steps are:
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- create a flowchart and two plots
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- input noisy data to the flowchart
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- flowchart connects data to the first plot, where it is displayed
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- add a gaussian filter to lowpass the data, then display it in the second plot.
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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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from pyqtgraph.flowchart import Flowchart
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from pyqtgraph.Qt import QtGui, QtCore
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import pyqtgraph as pg
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import numpy as np
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app = QtGui.QApplication([])
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win = QtGui.QMainWindow()
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cw = QtGui.QWidget()
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win.setCentralWidget(cw)
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layout = QtGui.QGridLayout()
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cw.setLayout(layout)
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fc = Flowchart(terminals={
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'dataIn': {'io': 'in'},
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'dataOut': {'io': 'out'}
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})
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w = fc.widget()
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layout.addWidget(fc.widget(), 0, 0, 2, 1)
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pw1 = pg.PlotWidget()
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pw2 = pg.PlotWidget()
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layout.addWidget(pw1, 0, 1)
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layout.addWidget(pw2, 1, 1)
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win.show()
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data = np.random.normal(size=1000)
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data[200:300] += 1
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data += np.sin(np.linspace(0, 100, 1000))
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fc.setInput(dataIn=data)
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pw1Node = fc.createNode('PlotWidget', pos=(0, -150))
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pw1Node.setPlot(pw1)
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pw2Node = fc.createNode('PlotWidget', pos=(150, -150))
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pw2Node.setPlot(pw2)
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fNode = fc.createNode('GaussianFilter', pos=(0, 0))
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fNode.ctrls['sigma'].setValue(5)
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fc.connectTerminals(fc.dataIn, fNode.In)
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fc.connectTerminals(fc.dataIn, pw1Node.In)
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fc.connectTerminals(fNode.Out, pw2Node.In)
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fc.connectTerminals(fNode.Out, fc.dataOut)
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#n1 = fc.createNode('Add', pos=(0,-80))
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#n2 = fc.createNode('Subtract', pos=(140,-10))
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#n3 = fc.createNode('Abs', pos=(0, 80))
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#n4 = fc.createNode('Add', pos=(140,100))
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#fc.connectTerminals(fc.dataIn, n1.A)
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#fc.connectTerminals(fc.dataIn, n1.B)
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#fc.connectTerminals(fc.dataIn, n2.A)
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#fc.connectTerminals(n1.Out, n4.A)
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#fc.connectTerminals(n1.Out, n2.B)
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#fc.connectTerminals(n2.Out, n3.In)
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#fc.connectTerminals(n3.Out, n4.B)
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#fc.connectTerminals(n4.Out, fc.dataOut)
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#def process(**kargs):
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#return fc.process(**kargs)
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#print process(dataIn=7)
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#fc.setInput(dataIn=3)
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#s = fc.saveState()
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#fc.clear()
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#fc.restoreState(s)
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#fc.setInput(dataIn=3)
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## Start Qt event loop unless running in interactive mode or using pyside.
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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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