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### ============================================================================
### rowCumsums
###
### ----------------------------------------------------------------------------
### Non-exported methods
###
.DelayedMatrix_block_rowCumsums <- function(x, rows = NULL, cols = NULL,
..., useNames = TRUE) {
# Check input type
stopifnot(is(x, "DelayedMatrix"))
DelayedArray:::.get_ans_type(x, must.be.numeric = TRUE)
# Subset
x <- ..subset(x, rows, cols)
# Compute result
val <- rowblock_APPLY(x = x,
FUN = rowCumsums,
...,
useNames = useNames)
if (length(val) == 0L) {
return(numeric(ncol(x)))
}
val <- do.call(rbind, val)
if (!useNames) {
val <- unname(val)
}
val
}
### ----------------------------------------------------------------------------
### Exported methods
###
# ------------------------------------------------------------------------------
# General method
#
#' @inherit MatrixGenerics::rowCumsums
#' @importMethodsFrom DelayedArray seed
#' @rdname colCummaxs
#' @export
#' @examples
#'
#' # Only use rows 2-4
#' rowCumsums(dm_Matrix, rows = 2:4)
setMethod("rowCumsums", "DelayedMatrix",
function(x, rows = NULL, cols = NULL,
force_block_processing = FALSE, ..., useNames = TRUE) {
.smart_seed_dispatcher(x, generic = MatrixGenerics::rowCumsums,
blockfun = .DelayedMatrix_block_rowCumsums,
force_block_processing = force_block_processing,
rows = rows,
cols = cols,
...,
useNames = useNames)
}
)
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