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# scipy.interpolate.BivariateSpline.ev

`BivariateSpline.``ev`(xi, yi, dx=0, dy=0)

  Evaluate the spline at points

  Returns the interpolated value at `(xi[i], yi[i]), i=0,...,len(xi)-1`.

  Parameters: | xi, yi : array_like Input coordinates. Standard Numpy broadcasting is obeyed. dx : int, optional Order of x-derivative New in version 0.14.0. dy : int, optional Order of y-derivative New in version 0.14.0.