Plotting.py 2.51 KB
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 Luke Campagnola committed Mar 01, 2012 1 ``````# -*- coding: utf-8 -*- `````` Luke Campagnola committed Mar 17, 2012 2 3 4 5 6 7 8 `````` ## This example demonstrates many of the 2D plotting capabilities ## in pyqtgraph. All of the plots may be panned/scaled by dragging with ## the left/right mouse buttons. Right click on any plot to show a context menu. import initExample ## Add path to library (just for examples; you do not need this) `````` Luke Campagnola committed Mar 01, 2012 9 10 `````` `````` Luke Campagnola committed Mar 01, 2012 11 ``````from pyqtgraph.Qt import QtGui, QtCore `````` Luke Campagnola committed Mar 01, 2012 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 ``````import numpy as np import pyqtgraph as pg #QtGui.QApplication.setGraphicsSystem('raster') app = QtGui.QApplication([]) #mw = QtGui.QMainWindow() #mw.resize(800,800) win = pg.GraphicsWindow(title="Basic plotting examples") win.resize(800,600) p1 = win.addPlot(title="Basic array plotting", y=np.random.normal(size=100)) p2 = win.addPlot(title="Multiple curves") p2.plot(np.random.normal(size=100), pen=(255,0,0)) p2.plot(np.random.normal(size=100)+5, pen=(0,255,0)) p2.plot(np.random.normal(size=100)+10, pen=(0,0,255)) p3 = win.addPlot(title="Drawing with points") p3.plot(np.random.normal(size=100), pen=(200,200,200), symbolBrush=(255,0,0), symbolPen='w') win.nextRow() p4 = win.addPlot(title="Parametric") x = np.cos(np.linspace(0, 2*np.pi, 1000)) y = np.sin(np.linspace(0, 4*np.pi, 1000)) p4.plot(x, y) p5 = win.addPlot(title="Scatter plot with labels") x = np.random.normal(size=1000) * 1e-5 y = x*1000 + 0.005 * np.random.normal(size=1000) p5.plot(x, y, pen=None, symbol='t', symbolPen=None, symbolSize=10, symbolBrush=(100, 100, 255, 50)) p5.setLabel('left', "Y Axis", units='A') p5.setLabel('bottom', "Y Axis", units='s') p6 = win.addPlot(title="Updating plot") curve = p6.plot(pen='y') data = np.random.normal(size=(10,1000)) ptr = 0 def update(): global curve, data, ptr, p6 curve.setData(data[ptr%10]) if ptr == 0: p6.enableAutoRange('xy', False) ptr += 1 timer = QtCore.QTimer() timer.timeout.connect(update) timer.start(50) win.nextRow() p7 = win.addPlot(title="Filled plot") y = np.sin(np.linspace(0, 10, 1000)) + np.random.normal(size=1000, scale=0.1) p7.plot(y, fillLevel=-0.3, brush=(50,50,200,100)) `````` Luke Campagnola committed Mar 09, 2012 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 ``````x2 = np.linspace(-100, 100, 1000) data2 = np.sin(x2) / x2 p8 = win.addPlot(title="Region Selection") p8.plot(data2, pen=(255,255,255,200)) lr = pg.LinearRegionItem([400,700]) lr.setZValue(-10) p8.addItem(lr) p9 = win.addPlot(title="Zoom on selected region") p9.plot(data2) def update(): p9.setXRange(*lr.getRegion()) lr.sigRegionChanged.connect(update) update() `````` Luke Campagnola committed Mar 17, 2012 88 89 90 ``````## Start Qt event loop unless running in interactive mode or using pyside. import sys if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'): `````` Luke Campagnola committed Mar 01, 2012 91 `````` app.exec_() `````` Luke Campagnola committed Mar 17, 2012 92