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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

An 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, except when x is of mode logical, then the return type is integer.

Author(s)

Henrik Bengtsson

See Also

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

Examples

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)
matrixStats

Functions that Apply to Rows and Columns of Matrices (and to Vectors)

v0.58.0
Artistic-2.0
Authors
Henrik Bengtsson [aut, cre, cph], Constantin Ahlmann-Eltze [ctb], Hector Corrada Bravo [ctb], Robert Gentleman [ctb], Jan Gleixner [ctb], Peter Hickey [ctb], Ola Hossjer [ctb], Harris Jaffee [ctb], Dongcan Jiang [ctb], Peter Langfelder [ctb], Brian Montgomery [ctb], Hugh Parsonage [ctb]
Initial release

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