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\alias{write_stm_CLUTO}
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\title{Read and Write Sparse Matrix Format Files}
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Read and write CLUTO sparse matrix format files.
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write_stm_CLUTO(x, file)
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\item{file}{a character string with the name of the file to read or
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\item{x}{a matrix object.}
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Documentation for CLUTO including its sparse matrix format is
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available from \url{http://www-users.cs.umn.edu/~karypis/cluto/}.
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\code{read_stm_CLUTO} reads CLUTO sparse matrices, returning a
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\link[slam:matrix]{simple triplet matrix}.
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\code{write_stm_CLUTO} writes CLUTO sparse matrices.
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Argument \code{x} must be coercible to a simple triplet matrix via
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\code{\link[slam:matrix]{as.simple_triplet_matrix}}.