'Constructor.'

def __init__(self, options=None):

    super(ChartRadar, self).__init__()
    if (options is None):
        options = {}
    self.subtype = options.get('subtype')
    if (not self.subtype):
        self.subtype = 'marker'
        self.default_marker = {'type': 'none'}
    self.x_axis['defaults']['major_gridlines'] = {'visible': 1}
    self.set_x_axis({})
    self.label_position_default = 'center'
    self.label_positions = {'center': 'ctr'}
    self.y_axis['major_tick_mark'] = 'cross'
