上面的程序运行起来, X轴的刻度是 数字, 如果我们希望轴刻度是文字怎么做呢?
我们参考了这个网址的介绍: https://stackoverflow.com/questions/31775468/show-string-values-on-x-axis-in-pyqtgraph?lq=1
需要定义从数字到字符串的映射列表,参考如下代码
import pyqtgraph as pg # 刻度表,注意是双层列表 xTick = [[(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd'), (4, 'e'), (5, 'f')]] x = [0,1,2,3,4,5] y = [1, 2, 3, 4, 5, 6] win = pg.GraphicsWindow() stringaxis = pg.AxisItem(orientation='bottom') stringaxis.setTicks(xTick) plot = win.addPlot(axisItems={'bottom': stringaxis}) curve = plot.plot(x,y) pg.QtGui.QApplication.exec_()
如果使用 PlotWidget,则要获取轴对象,参考代码如下
# self.ui.historyPlot 就是 PlotWidget对象 xax = self.ui.historyPlot.getAxis('bottom') xax.setTicks(xTick)
标签:plot,stringaxis,bottom,xTick,刻度,字符串,pg From: https://www.cnblogs.com/gooutlook/p/17268661.html