pointsFromGridVectors

Convert rectilinear grid vectors into an explicit point matrix.

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Declaration

 [pointMatrix,gridSize] = pointsFromGridVectors(gridVectors)

Parameters

• gridVectors cell array of grid vectors

Returns

• pointMatrix matrix with one row per grid point
• gridSize number of points along each dimension

Discussion

Use this helper to convert rectilinear grid vectors into the point-matrix format accepted by TensorSpline.matrixForPointMatrix.

If [X1,...,Xd] = ndgrid(gridVectors{:}), then the returned matrix is

\[\mathrm{pointMatrix} = [X_1(:)\ \cdots\ X_d(:)].\]

  [points, gridSize] = TensorSpline.pointsFromGridVectors({x,y});
  B = TensorSpline.matrixForPointMatrix(points, knotPoints=tKnot, S=[3 3]);