diff

Return a tensor spline representing mixed partial derivatives.

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Declaration

 dspline = diff(self,derivativeOrders)

Parameters

• self TensorSpline instance
• derivativeOrders derivative order per dimension

Returns

• dspline TensorSpline representing the derivative

Discussion

Use a scalar derivative order in 1-D or a derivative-order vector with one entry per dimension.

The implementation differentiates the tensor-product coefficients along each requested dimension and reduces the degree in those dimensions by the corresponding derivative orders.

  dspline = diff(spline);
  dFdx = diff(spline, [1 0]);