Revision e903a69b2aa125d9836cba37a3b46895643f8344 authored by Doug and Martin on 07 March 2008, 00:00:00 UTC, committed by Gabor Csardi on 07 March 2008, 00:00:00 UTC
1 parent eb1f7fc
dgCMatrix.R
#### Sparse Matrices in Compressed column-oriented format
### contains = "dsparseMatrix", "CsparseMatrix"
## Specific conversions, should they be necessary. Better to convert as
## as(x, "TsparseMatrix") or as(x, "denseMatrix")
## Moved to ./Csparse.R :
## setAs("dgCMatrix", "dgTMatrix", ....
## setAs("dgCMatrix", "dgeMatrix", ....
## setAs("dgeMatrix", "dgCMatrix", ....
## rather use Csparse* to lsparse* in ./lsparseMatrix.R ,
## but this is for "back-compatibility" (have had tests for it..):
setAs("dgCMatrix", "ngCMatrix",
function(from) .Call(Csparse_to_nz_pattern, from, FALSE))
setAs("dgCMatrix", "lgCMatrix",
function(from) { ## FIXME use .Call() too!
r <- new("lgCMatrix")
r@x <- as.logical(from@x)
## and copy the other slots
for(nm in c("i", "p", "Dim", "Dimnames"))
slot(r, nm) <- slot(from, nm)
r
})
setMethod("image", "dgCMatrix",
function(x, ...) {
x <- as(x, "dgTMatrix")
callGeneric()
})
## Group Methods, see ?Arith (e.g.)
## -----
##
## "Arith" is now in ./Ops.R
##
## "Math" is up in ./Csparse.R
##
## "Math2" is up in ./dMatrix.R
###---- end {Group Methods} -----------------
## "[<-" methods { setReplaceMethod()s } are now in ./Csparse.R
## setMethod("writeHB", signature(obj = "dgCMatrix"),
## function(obj, file, ...) {
## .Deprecated("writeMM")
## .Call(Matrix_writeHarwellBoeing, obj,
## as.character(file), "DGC")
## })
##-> ./colSums.R for colSums,... rowMeans
setMethod("qr", signature(x = "dgCMatrix"),
function(x, tol = 1e-07, LAPACK = FALSE)
.Call(dgCMatrix_QR, x, TRUE))
setMethod("qr", signature(x = "sparseMatrix"),
function(x, tol, ...)
qr(as(as(x, "CsparseMatrix"), "dsparseMatrix"), ...))
setMethod("lu", signature(x = "dgCMatrix"),
function(x, ...) .Call(dgCMatrix_LU, x, TRUE, 1))
setMethod("lu", signature(x = "sparseMatrix"),
function(x, ...) lu(as(as(x, "CsparseMatrix"), "dsparseMatrix"), ...))
setMethod("solve", signature(a = "dgCMatrix", b = "matrix"),
function(a, b, ...) .Call(dgCMatrix_matrix_solve, a, b),
valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dgCMatrix", b = "ddenseMatrix"),
function(a, b, ...) .Call(dgCMatrix_matrix_solve, a, b),
valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dgCMatrix", b = "dsparseMatrix"),
function(a, b, ...)
.Call(dgCMatrix_matrix_solve, a, as(b, "denseMatrix")),
valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dgCMatrix", b = "missing"),
function(a, b, ...) .Call(dgCMatrix_matrix_solve, a, b=NULL),
valueClass = "dgeMatrix")
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