view.py 文件源码

def __init__(self, width, height, box):
        """Create the view with a width an height and a box bounds"""
        super(PolarLogView, self).__init__(width, height, box)
        if not hasattr(box, '_rmin') or not hasattr(box, '_rmax'):
            raise Exception(
                'Box must be set with set_polar_box for polar charts')

        self.log10_rmax = log10(self.box._rmax)
        self.log10_rmin = log10(self.box._rmin)
        if self.log10_rmin == self.log10_rmax:
            self.log10_rmax = self.log10_rmin + 1