Var: Efficiently compute row-wise or column-wise variance of a...

In mcfreund/mfutils: Personal miscellaneous utility functions

Description

Reproduced from David Arenburg's answer here: https://stackoverflow.com/questions/25099825/row-wise-variance-of-a-matrix-in-r

Usage

Var(x, dim = 1, ...)

Arguments

x	N by P numeric matrix
dim	dimension along which to compute variance (1 == row, 2 == col)
...	(optional) arguments for rowSums/colMeans calls (e.g., na.rm)

Value

a vector containing the variances

Examples

x <- row(matrix(0, 3, 4))
length(Var(x)) == nrow(x)
length(Var(x, 2)) == ncol(x)

mcfreund/mfutils documentation built on Feb. 6, 2022, 4:57 a.m.