https://github.com/cran/Matrix
Tip revision: c7633495f22d21bd0e6756d6b2013a886015e419 authored by Douglas Bates on 14 November 2005, 00:00:00 UTC
version 0.99-2
version 0.99-2
Tip revision: c763349
dsparseMatrix.R
## For multiplication operations, sparseMatrix overrides other method
## selections. Coerce a ddensematrix argument to a dgeMatrix.
setMethod("%*%", signature(x = "dsparseMatrix", y = "ddenseMatrix"),
function(x, y) callGeneric(x, as(y, "dgeMatrix")))
setMethod("%*%", signature(x = "ddenseMatrix", y = "dsparseMatrix"),
function(x, y) callGeneric(as(x, "dgeMatrix"), y))
setMethod("crossprod", signature(x = "dsparseMatrix", y = "ddenseMatrix"),
function(x, y = NULL) callGeneric(x, as(y, "dgeMatrix")))
setMethod("crossprod", signature(x = "ddenseMatrix", y = "dsparseMatrix"),
function(x, y = NULL) callGeneric(as(x, "dgeMatrix"), y))
## and coerce dsparse* to dgC*
setMethod("%*%", signature(x = "dsparseMatrix", y = "dgeMatrix"),
function(x, y) callGeneric(as(x, "dgCMatrix"), y))
setMethod("%*%", signature(x = "dgeMatrix", y = "dsparseMatrix"),
function(x, y) callGeneric(x, as(y, "dgCMatrix")))
setMethod("crossprod", signature(x = "dsparseMatrix", y = "dgeMatrix"),
function(x, y = NULL) callGeneric(as(x, "dgCMatrix"), y))
## NB: there's already
## ("CsparseMatrix", "missing") and ("TsparseMatrix", "missing") methods
setMethod("crossprod", signature(x = "dgeMatrix", y = "dsparseMatrix"),
function(x, y = NULL) callGeneric(x, as(y, "dgCMatrix")))
setMethod("image", "dsparseMatrix",
function(x, ...) image(as(x, "dgTMatrix"), ...))
setMethod("kronecker", signature(X = "dsparseMatrix", Y = "dsparseMatrix"),
function (X, Y, FUN = "*", make.dimnames = FALSE, ...)
callGeneric(as(X, "dgTMatrix"),as(Y, "dgTMatrix")))
## Group Methods, see ?Arith (e.g.)
## -----
## NOT YET (first need 'dgCMatrix' method):
## setMethod("Arith", ## "+", "-", "*", "^", "%%", "%/%", "/"
## signature(e1 = "dsparseMatrix", e2 = "dsparseMatrix"),
## function(e1, e2) callGeneric(as(e1, "dgCMatrix"),
## as(e2, "dgCMatrix")))
## setMethod("Arith",
## signature(e1 = "dsparseMatrix", e2 = "numeric"),
## function(e1, e2) callGeneric(as(e1, "dgCMatrix"), e2))
## setMethod("Arith",
## signature(e1 = "numeric", e2 = "dsparseMatrix"),
## function(e1, e2) callGeneric(e1, as(e2, "dgCMatrix")))
setMethod("Math",
signature(x = "dsparseMatrix"),
function(x) {
r <- callGeneric(as(x, "dgCMatrix"))
if(is(r, "dsparseMatrix")) as(r, class(x))
})
if(FALSE) ## unneeded with "Math2" in ./dMatrix.R
setMethod("Math2",
signature(x = "dsparseMatrix", digits = "numeric"),
function(x, digits) {
r <- callGeneric(as(x, "dgCMatrix"), digits = digits)
if(is(r, "dsparseMatrix")) as(r, class(x))
})
### cbind2 / rbind2
if(paste(R.version$major, R.version$minor, sep=".") >= "2.2") {
## for R 2.2.x (and later):
### cbind2
setMethod("cbind2", signature(x = "dsparseMatrix", y = "numeric"),
function(x, y) {
d <- dim(x); nr <- d[1]; nc <- d[2]; cl <- class(x)
x <- as(x, "dgCMatrix")
if(nr > 0) {
y <- rep(y, length.out = nr) # 'silent procrustes'
n0y <- y != 0
n.e <- length(x@i)
x@i <- c(x@i, (0:(nr-1))[n0y])
x@p <- c(x@p, n.e + sum(n0y))
x@x <- c(x@x, y[n0y])
} else { ## nr == 0
}
x@Dim[2] <- nc + 1:1
if(is.character(dn <- x@Dimnames[[2]]))
x@Dimnames[[2]] <- c(dn, "")
x
})
## the same, (x,y) <-> (y,x):
setMethod("cbind2", signature(x = "numeric", y = "dsparseMatrix"),
function(x, y) {
d <- dim(y); nr <- d[1]; nc <- d[2]; cl <- class(y)
y <- as(y, "dgCMatrix")
if(nr > 0) {
x <- rep(x, length.out = nr) # 'silent procrustes'
n0x <- x != 0
y@i <- c((0:(nr-1))[n0x], y@i)
y@p <- c(0:0, sum(n0x) + y@p)
y@x <- c(x[n0x], y@x)
} else { ## nr == 0
}
y@Dim[2] <- nc + 1:1
if(is.character(dn <- y@Dimnames[[2]]))
y@Dimnames[[2]] <- c(dn, "")
y
})
setMethod("cbind2", signature(x = "dsparseMatrix", y = "matrix"),
function(x, y) callGeneric(x, as(y, "dgCMatrix")))
setMethod("cbind2", signature(x = "matrix", y = "dsparseMatrix"),
function(x, y) callGeneric(as(x, "dgCMatrix"), y))
setMethod("cbind2", signature(x = "dsparseMatrix", y = "dsparseMatrix"),
function(x, y) {
nr <- rowCheck(x,y)
ncx <- x@Dim[2]
ncy <- y@Dim[2]
## beware of (packed) triangular, symmetric, ...
hasDN <- !is.null(dnx <- dimnames(x)) |
!is.null(dny <- dimnames(y))
x <- as(x, "dgCMatrix")
y <- as(y, "dgCMatrix")
ne.x <- length(x@i)
x@i <- c(x@i, y@i)
x@p <- c(x@p, ne.x + y@p[-1])
x@x <- c(x@x, y@x)
x@Dim[2] <- ncx + ncy
if(hasDN) {
## R and S+ are different in which names they take
## if they differ -- but there's no warning in any case
rn <- if(!is.null(dnx[[1]])) dnx[[1]] else dny[[1]]
cx <- dnx[[2]] ; cy <- dny[[2]]
cn <- if(is.null(cx) && is.null(cy)) NULL
else c(if(!is.null(cx)) cx else rep.int("", ncx),
if(!is.null(cy)) cy else rep.int("", ncy))
x@Dimnames <- list(rn, cn)
}
x
})
### rbind2 -- analogous to cbind2 --- more to do for @x though:
}## R-2.2.x ff