matrixStats (version 0.54.0)

rowCumsums: Cumulative sums, products, minima and maxima for each row (column) in a matrix

Description

Cumulative sums, products, minima and maxima for each row (column) in a matrix.

Usage

rowCumsums(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
colCumsums(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
rowCumprods(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
colCumprods(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
rowCummins(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
colCummins(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
rowCummaxs(x, rows = NULL, cols = NULL, dim. = dim(x), ...)
colCummaxs(x, rows = NULL, cols = NULL, dim. = dim(x), ...)

Arguments

x

A numeric NxK matrix.

rows, cols

A vector indicating subset of elements (or rows and/or columns) to operate over. If NULL, no subsetting is done.

dim.

An integer vector of length two specifying the dimension of x, also when not a matrix.

...

Not used.

Value

Returns a numeric NxK matrix of the same mode as x.

See Also

See cumsum(), cumprod(), cummin(), and cummax().

Examples

# NOT RUN {
x <- matrix(1:12, nrow = 4, ncol = 3)
print(x)

yr <- rowCumsums(x)
print(yr)

yc <- colCumsums(x)
print(yc)

yr <- rowCumprods(x)
print(yr)

yc <- colCumprods(x)
print(yc)

yr <- rowCummaxs(x)
print(yr)

yc <- colCummaxs(x)
print(yc)

yr <- rowCummins(x)
print(yr)

yc <- colCummins(x)
print(yc)
# }