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#### Superclass Methods for all sparse logical matrices
C2l <- function(from) {
if(extends(cld <- getClassDef(class(from)), "lsparseMatrix"))
return(from)
## else
if(!(is.n <- extends(cld, "nsparseMatrix"))) {
## len.x <- length(from@x)
from <- .Call(Csparse_drop, from, 0)
## did.drop <- length(from@x) != len.x
}
r <- as(.C2nC(from, extends(cld, "triangularMatrix")), "lsparseMatrix")
if(!is.n && any(ina <- is.na(from@x))) { ## NAs must remain NA
## since we dropped, we "know" that the 'x' slots match:
stopifnot(length(from@x) == length(r@x))
is.na(r@x) <- ina
}
r
}
setAs("CsparseMatrix", "lMatrix", C2l)
setAs("CsparseMatrix", "lsparseMatrix", C2l)
setAs("lsparseMatrix", "matrix",
function(from) as(as(from, "ldenseMatrix"), "matrix"))
setAs("lsparseMatrix", "dsparseMatrix", function(from) as(from, "dMatrix"))
setMethod("image", "lsparseMatrix", function(x, ...) image(as(x,"dMatrix"), ...))
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