sp2Matrix – Convert sparse matrix

sp2Matrix converts a sparse matrix in three column coordinate form to a Matrix object.

sp2Matrix(x, dense = FALSE, triplet = FALSE)

`x`	A three column matrix containing the row and column indices and the matrix element, respectively, of the sparse matrix.
`dense`	If `TRUE` (the default is `FALSE`), the result is stored as a dense symmetric `dspMatrix` object, otherwise a sparse symmetric matrix.
`triplet`	If `TRUE` (the default is `FALSE`), the result is a `CsparseMatrix`, otherwise a `TsparseMatrix` (triplet form).

If the sparse matrix inherits class ginv, the returned object preserves the A^-1attributes.

Updated on June 22, 2021