How to remove left and right curve padding in the viewbox

[JJ]

When data is plotted there is a padding between the first and last x points by default.

For example, when I plot using the following, the first x axis value is approximately 1e-3 rather than 0.

How can I plot the data so that xmin and xmax on the x axis correspond to xmin and xmax of the plotted data? Do I have to manually set the x limits or is there a setting for this?

from PyQt5.QtCore import *

from PyQt5.QtGui import *

from PyQt5.QtWidgets import *

import pyqtgraph as pg

import numpy as np

import sys

class PlotWidget(pg.GraphicsLayoutWidget):

    

    def __init__(self):

        super().__init__()

        self.myplot = self.addPlot()

        self.viewbox = self.myplot.getViewBox() #correct method

        self.myplot.showGrid(True,True, 1)

        

        x = np.linspace(0,20e-3, 100)

        y = 2*np.sin(2*np.pi*50*x)

        curve = self.myplot.plot(x, y)

        self.show()

        

if __name__ == '__main__':

    app = QApplication(sys.argv)

    plot = PlotWidget()

    sys.exit(app.exec_())