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#### Triangular Matrices -- Coercion and Methods
## FIXME: get rid of this (coerce to "triangular..") ?!?
setAs("dgeMatrix", "dtrMatrix", function(from) asTri(from, "dtrMatrix"))
setAs("dtrMatrix", "dtpMatrix",
dtr2dtp <- function(from) .Call(dtrMatrix_as_dtpMatrix, from))
setAs("dtrMatrix", "sparseMatrix", function(from)
.dense2C(from, kind="tri", uplo=from@uplo))
setAs("dtrMatrix", "CsparseMatrix", function(from)
.dense2C(from, kind="tri", uplo=from@uplo))
.dtr2mat <- function(from, keep.dimnames=TRUE)
.Call(dtrMatrix_as_matrix, from, keep.dimnames)
## needed for t() method
setAs("dtrMatrix", "matrix",
function(from) .Call(dtrMatrix_as_matrix, from, TRUE))
setAs("matrix", "dtrMatrix",
function(from) as(..2dge(from), "dtrMatrix"))
setAs("Cholesky", "lMatrix",
function(from) as(as(from, "dtrMatrix"), "lMatrix"))
setAs("BunchKaufman", "lMatrix",
function(from) as(as(from, "dtrMatrix"), "lMatrix"))
## Group Methods:
## TODO: carefully check for the cases where the result remains triangular
## instead : inherit them from "dgeMatrix" via definition in ./dMatrix.R
## Note: Just *because* we have an explicit dtr -> dge coercion,
## show( <ddenseMatrix> ) is not okay, and we need our own:
setMethod("show", "dtrMatrix", function(object) prMatrix(object))
setMethod("determinant", signature(x = "dtrMatrix", logarithm = "missing"),
function(x, logarithm, ...) callGeneric(x, TRUE))
setMethod("determinant", signature(x = "dtrMatrix", logarithm = "logical"),
function(x, logarithm, ...) mkDet(diag(x), logarithm))
setMethod("diag", signature(x = "dtrMatrix"),
function(x, nrow, ncol) .Call(dtrMatrix_getDiag, x),
valueClass = "numeric")
setMethod("diag<-", signature(x = "dtrMatrix"),
function(x, value) {
.Call(dtrMatrix_setDiag,
if(x@diag == "U") .dense.diagU2N(x, "d", isPacked=FALSE) else x,
value)
})
setMethod("norm", signature(x = "dtrMatrix", type = "character"),
function(x, type, ...)
if(identical("2", type)) norm2(x) else .Call(dtrMatrix_norm, x, type),
valueClass = "numeric")
setMethod("norm", signature(x = "dtrMatrix", type = "missing"),
function(x, type, ...)
.Call(dtrMatrix_norm, x, "O"),
valueClass = "numeric")
setMethod("rcond", signature(x = "dtrMatrix", norm = "character"),
function(x, norm, ...)
.Call(dtrMatrix_rcond, x, norm),
valueClass = "numeric")
setMethod("rcond", signature(x = "dtrMatrix", norm = "missing"),
function(x, norm, ...)
.Call(dtrMatrix_rcond, x, "O"),
valueClass = "numeric")
setMethod("chol2inv", signature(x = "dtrMatrix"),
function (x, ...) {
chk.s(..., which.call=-2)
if (x@diag != "N") x <- diagU2N(x)
.Call(dtrMatrix_chol2inv, x)
})
setMethod("solve", signature(a = "dtrMatrix", b="missing"),
function(a, b, ...) {
## warn, as e.g. CHMfactor have 'system' as third argument
chk.s(..., which.call=-2)
.Call(dtrMatrix_solve, a)
}, valueClass = "dtrMatrix")
setMethod("solve", signature(a = "dtrMatrix", b="ddenseMatrix"),
function(a, b, ...) {
chk.s(..., which.call=-2)
.Call(dtrMatrix_matrix_solve, a, b)
}, valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dtrMatrix", b="dMatrix"),
function(a, b, ...) {
chk.s(..., which.call=-2)
.Call(dtrMatrix_matrix_solve, a, as(b,"denseMatrix"))
}, valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dtrMatrix", b="Matrix"),
function(a, b, ...) {
chk.s(..., which.call=-2)
.Call(dtrMatrix_matrix_solve, a, as(as(b, "dMatrix"),
"denseMatrix"))
}, valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dtrMatrix", b="matrix"),
function(a, b, ...) {
chk.s(..., which.call=-2)
.Call(dtrMatrix_matrix_solve, a, b)
}, valueClass = "dgeMatrix")
setMethod("t", signature(x = "dtrMatrix"), t_trMatrix)
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