matrixStats (version 0.53.1)

rowMads: Standard deviation estimates for each row (column) in a matrix

Description

Standard deviation estimates for each row (column) in a matrix.

Usage

rowMads(x, rows = NULL, cols = NULL, center = NULL, constant = 1.4826,
  na.rm = FALSE, dim. = dim(x), ...)
colMads(x, rows = NULL, cols = NULL, center = NULL, constant = 1.4826,
  na.rm = FALSE, dim. = dim(x), ...)
rowSds(x, rows = NULL, cols = NULL, na.rm = FALSE, center = NULL,
  dim. = dim(x), ...)
colSds(x, rows = NULL, cols = NULL, na.rm = FALSE, center = NULL,
  dim. = dim(x), ...)

Arguments

x

A numeric NxK matrix.

rows, cols

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

center

(optional) The center, defaults to the row means for the SD estimators and row medians for the MAD estimators.

constant

A scale factor. See mad for details.

na.rm

If TRUE, NAs are excluded first, otherwise not.

dim.

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

...

Additional arguments passed to rowMeans() and rowSums().

Value

Returns a numeric vector of length N (K).

See Also

sd, mad and var. rowIQRs().