Nothing
Mefa <-
function(xtab, samp, taxa,
join = c("left", "inner"), drop = FALSE) {
if (missing(xtab))
stop("'xtab' must be supplied")
if (is.null(dimnames(xtab))) {
dimnames(xtab) <- list(1:nrow(xtab), 1:ncol(xtab))
warnings("dimnames for 'xtab' added, it was NULL")
}
if (missing(samp)) {
samp <- NULL
sid <- rownames(xtab)
} else sid <- rownames(samp)
if (missing(taxa)) {
taxa <- NULL
tid <- colnames(xtab)
} else tid <- rownames(taxa)
xrid <- rownames(xtab)
xcid <- colnames(xtab)
join <- match.arg(join)
if (join == "left") {
rkeep <- xrid
ckeep <- xcid
}
if (join == "inner") {
rkeep <- if (!is.null(samp))
intersect(xrid, sid) else xrid
ckeep <- if (!is.null(taxa))
intersect(xcid, tid) else xcid
}
xtab <- xtab[rkeep, ckeep, drop=FALSE]
if (!is.null(samp)) {
samp <- samp[rkeep,,drop=FALSE]
rownames(samp) <- rkeep
}
if (!is.null(taxa)) {
taxa <- taxa[ckeep,,drop=FALSE]
rownames(taxa) <- ckeep
}
if (drop) {
samp[] <- lapply(samp, function(z) z[drop = TRUE])
taxa[] <- lapply(taxa, function(z) z[drop = TRUE])
}
new("Mefa",
# xtab = as(xtab, "dgCMatrix"),
xtab = as(as(as(xtab, "dMatrix"), "generalMatrix"), "CsparseMatrix"),
samp = samp, taxa = taxa,
join = join)
}
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