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View of /pkg/man/tcrossprod.Rd

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Fri Nov 12 21:02:51 2004 UTC (14 years, 10 months ago) by bates
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update methods
\title{Cross-product of transpose}
  Take the cross-product of the transpose of a matrix.
  This is formally equivalent to, but faster than, the
  call \code{x \%*\% t(x)}.
  \item{x}{a matrix-like object}
  For some classes in the \code{Matrix} package, such as the
  \code{\link{cscMatrix-class}}, it is much faster to calculate the
  cross-product of the transpose directly instead of calculating the
  transpose first and then its cross-product.
  An object of an appropriate symmetric matrix class.
    \item{x = "cscMatrix"}{method for compressed, sparse,
      column-oriented matrices.}
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