matrixStats: rowSds – R documentation

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matrixStats

rowSds

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`, `NA`s 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).

Author(s)

Henrik Bengtsson