def METHOD_NAME(self):
    plot = self.getPlotWidget()
    plot.clear()
    plot.getDefaultColormap().setName('viridis')
    # Add an image to the plot
    x = numpy.outer(
        numpy.linspace(-10, 10, 200), numpy.linspace(-10, 5, 150))
    image = numpy.sin(x) / x
    plot.addImage(image)
    plot.resetZoom()