def METHOD_NAME(self):
    plot = self.getPlotWidget()
    plot.clear()
    plot.getDefaultColormap().setName('viridis')
    nbPoints = 50
    x = numpy.random.rand(nbPoints)
    y = numpy.random.rand(nbPoints)
    value = numpy.random.rand(nbPoints)
    plot.addScatter(x=x, y=y, value=value)
    plot.resetZoom()