GMCM (version 1.4)

colSds: Row and column standard deviations

Description

The rowSds and colSds respectively computes the standard deviations of each rows and columns of the given matrix.

Usage

colSds(x)
rowSds(x)

Arguments

x

A numeric matrix of size n times m

Value

colSds returns a numeric vector of length m.

rowSds returns a numeric vector of length n.

See Also

rowMeans, colMeans

Examples

# NOT RUN {
x <- matrix(rnorm(50), 10, 5)
GMCM:::colSds(x)
apply(x, 2, sd)  # slower equivalent code
y <- matrix(rnorm(50), 10, 5)
GMCM:::rowSds(y)
# }