I have array of matrices. Every matrix has only one non-zero element in every row. So I want to save it as array of sparse matrices. How can I do it? sparse(A) where A is array of matrices returns error "Undefined function 'sparse' for input arguments of type 'double' and attributes 'full 3d real'."

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John D'Errico
John D'Errico le 9 Mai 2015

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You CAN have a cell array of sparse matrices. So every cell may contain a sparse matrix. But you cannot have a sparse 3-d matrix.

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James Tursa
James Tursa le 10 Mai 2015
Modifié(e) : James Tursa le 10 Mai 2015

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Yes, but not directly with inbuilt MATLAB functionality. Instead, you can use this FEX submission by Matt J:

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