Plotting.py 2.84 KB
 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 ``````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() `````` Luke Campagnola committed Apr 21, 2012 38 ``````p4 = win.addPlot(title="Parametric, grid enabled") `````` Luke Campagnola committed Mar 01, 2012 39 40 41 ``````x = np.cos(np.linspace(0, 2*np.pi, 1000)) y = np.sin(np.linspace(0, 4*np.pi, 1000)) p4.plot(x, y) `````` Luke Campagnola committed Apr 21, 2012 42 ``````p4.showGrid(x=True, y=True) `````` Luke Campagnola committed Mar 01, 2012 43 `````` `````` Luke Campagnola committed Apr 21, 2012 44 ``````p5 = win.addPlot(title="Scatter plot, axis labels, log scale") `````` Luke Campagnola committed Mar 01, 2012 45 46 ``````x = np.random.normal(size=1000) * 1e-5 y = x*1000 + 0.005 * np.random.normal(size=1000) `````` Luke Campagnola committed Apr 21, 2012 47 ``````y -= y.min()-1.0 `````` Luke Campagnola committed Mar 01, 2012 48 49 50 ``````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') `````` Luke Campagnola committed Apr 21, 2012 51 ``````p5.setLogMode(x=True, y=False) `````` Luke Campagnola committed Mar 01, 2012 52 53 54 55 56 57 58 59 60 `````` 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: `````` Luke Campagnola committed Mar 18, 2012 61 `````` p6.enableAutoRange('xy', False) ## stop auto-scaling after the first data set is plotted `````` Luke Campagnola committed Mar 01, 2012 62 63 64 65 66 67 68 69 `````` ptr += 1 timer = QtCore.QTimer() timer.timeout.connect(update) timer.start(50) win.nextRow() `````` Luke Campagnola committed Apr 21, 2012 70 ``````p7 = win.addPlot(title="Filled plot, axis disabled") `````` Luke Campagnola committed Mar 01, 2012 71 72 ``````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 Apr 21, 2012 73 ``````p7.showAxis('bottom', False) `````` Luke Campagnola committed Mar 01, 2012 74 75 `````` `````` Luke Campagnola committed Mar 09, 2012 76 77 78 79 80 81 82 83 84 85 ``````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) `````` Luke Campagnola committed Apr 22, 2012 86 87 88 89 90 91 92 ``````def updatePlot(): p9.setXRange(*lr.getRegion(), padding=0) def updateRegion(): lr.setRegion(p9.getViewBox().viewRange()[0]) lr.sigRegionChanged.connect(updatePlot) p9.sigXRangeChanged.connect(updateRegion) updatePlot() `````` Luke Campagnola committed Mar 09, 2012 93 `````` `````` Luke Campagnola committed Mar 17, 2012 94 95 96 ``````## 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 97 `````` app.exec_() `````` Luke Campagnola committed Mar 17, 2012 98