reconstruct_interp_matrix(idx, proj)
The interpolation matrix can be reconstructed from the ID indices and coefficients idx
and :None:None:`proj`
, respectively, as:
P = numpy.hstack([numpy.eye(proj.shape[0]), proj])[:,numpy.argsort(idx)]
The original matrix can then be reconstructed from its skeleton matrix :None:None:`B`
via:
numpy.dot(B, P)
See also reconstruct_matrix_from_id
and reconstruct_skel_matrix
.
<Comment: |value: '.. This function automatically detects the matrix data type and calls the\n appropriate backend. For details, see :func:`_backend.idd_reconint` and\n :func:`_backend.idz_reconint`.' |>
Column index array.
Interpolation coefficients.
Interpolation matrix.
Reconstruct interpolation matrix from ID.
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