#### Logical Sparse Triangular Matrices in Triplet format
### contains = "nsparseMatrix"
setAs("matrix", "ntTMatrix",
function(from) as(as(from, "ntrMatrix"), "TsparseMatrix"))
setAs("ntTMatrix", "ngTMatrix",
function(from) tT2gT(from, cl = "ntTMatrix", toClass = "ngTMatrix"))
setAs("ntTMatrix", "generalMatrix",
function(from) tT2gT(from, cl = "ntTMatrix", toClass = "ngTMatrix"))
setAs("ntTMatrix", "ntCMatrix",
function(from) .Call(Tsparse_to_Csparse, from, TRUE))
setAs("ntTMatrix", "ngCMatrix",
function(from) as(.Call(Tsparse_to_Csparse, from, TRUE), "ngCMatrix"))
setAs("ntTMatrix", "dtTMatrix",
function(from) new("dtTMatrix", i = from@i, j = from@j,
x = rep.int(1, length(from@i)), uplo = from@uplo,
diag = from@diag,
Dim = from@Dim, Dimnames = from@Dimnames))
setAs("ntTMatrix", "ntrMatrix",
function(from) .Call(ntTMatrix_as_ntrMatrix, from))
setAs("ntTMatrix", "matrix",
function(from) as(as(from, "ntrMatrix"), "matrix"))
setMethod("t", "ntTMatrix",
function(x)
new("ntTMatrix", Dim = x@Dim[2:1], Dimnames = x@Dimnames[2:1],
i = x@j, j = x@i, diag = x@diag,
uplo = if (x@uplo == "U") "L" else "U"))
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