scipy.interpolate
RectBivariateSpline.
integral
Evaluate the integral of the spline over area [xa,xb] x [ya,yb].
The end-points of the x integration interval.
The end-points of the y integration interval.
The value of the resulting integral.
scipy.interpolate.RectBivariateSpline.get_residual
scipy.interpolate.NdPPoly