"nsyMatrix" class is the class of symmetric, dense nonzero-pattern
matrices in non-packed storage and "nspMatrix" is the class of
of these in packed storage. Only the upper triangle or the
lower triangle is stored.new("nsyMatrix", ...)."nsyMatrix" extends class "ngeMatrix", directly, whereas
"nspMatrix" extends class "ndenseMatrix", directly. Both extend class "symmetricMatrix", directly,
and class "Matrix" and others, indirectly, use
showClass("nsyMatrix"), e.g., for details.
t() and coercion methods (for
as(.); use, e.g.,
showMethods(class="dsyMatrix") for details.ngeMatrix Matrix t(s0 <- new("nsyMatrix"))
(M2 <- Matrix(c(TRUE, NA,FALSE,FALSE), 2,2)) # logical dense (ltr)
(sM <- M2 & t(M2)) # "lge"
class(sM <- as(sM, "nMatrix")) # -> "nge"
(sM <- as(sM, "nsyMatrix")) # -> "nsy"
str ( sM <- as(sM, "nspMatrix")) # -> "nsp": packed symmetricRun the code above in your browser using DataLab