1# -*- coding: utf-8 -*- 2""" 3Simple logarithmic plotting test 4""" 5 6import initExample ## Add path to library (just for examples; you do not need this) 7 8 9from pyqtgraph.Qt import QtGui, QtCore 10import numpy as np 11import pyqtgraph as pg 12 13app = pg.mkQApp("Log Plot Example") 14 15win = pg.GraphicsLayoutWidget(show=True, title="Basic plotting examples") 16win.resize(1000,600) 17win.setWindowTitle('pyqtgraph example: LogPlotTest') 18 19 20p5 = win.addPlot(title="Scatter plot, axis labels, log scale") 21x = np.random.normal(size=1000) * 1e-5 22y = x*1000 + 0.005 * np.random.normal(size=1000) 23y -= y.min()-1.0 24mask = x > 1e-15 25x = x[mask] 26y = y[mask] 27p5.plot(x, y, pen=None, symbol='t', symbolPen=None, symbolSize=10, symbolBrush=(100, 100, 255, 50)) 28p5.setLabel('left', "Y Axis", units='A') 29p5.setLabel('bottom', "Y Axis", units='s') 30p5.setLogMode(x=True, y=False) 31 32 33if __name__ == '__main__': 34 pg.exec() 35