'Set size or scale of the chart.
Args:
options: A dictionary of chart size options.
Returns:
Nothing.'

def set_size(self, options):

    self.width = options.get('width', self.width)
    self.height = options.get('height', self.height)
    self.x_scale = options.get('x_scale', 1)
    self.y_scale = options.get('y_scale', 1)
    self.x_offset = options.get('x_offset', 0)
    self.y_offset = options.get('y_offset', 0)
