otf.py 文件源码

def _make_interp_function(self):
        '''Generates an interpolation function for this instance of MTF, used to
            procure MTF at exact frequencies.`

        Args:
            none

        Returns:
            :class:`MTF`, this instance of an MTF object.

        '''
        if not hasattr(self, 'interpf'):
            self.interpf = interpolate.RegularGridInterpolator((self.unit_x, self.unit_y), self.data)

        return self