feval

Evaluate a tensor spline at matching-size query arrays.

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Declaration

 values = feval(spline,X1,...,Xn,options)

Parameters

• spline TensorSpline instance
• X1,...,Xn matching-size query locations as one array per dimension
• options.D derivative order per dimension

Returns

• values spline values with the same shape as the query input

Discussion

This is a thin wrapper around valueAtPoints(...). Paired column vectors give pointwise queries, while matching ndgrid arrays give gridded evaluation on a tensor-product lattice.

  values = feval(spline, xq, yq);
  [Xq,Yq] = ndgrid(linspace(-1,1,40), linspace(0,2,50));
  F = feval(spline, Xq, Yq);