Split.zoo: Add split method for zoo objects

In UsingR: Data Sets, Etc. for the Text "Using R for Introductory Statistics", Second Edition

Add split method for zoo objects

Description

Splits zoo objects by a grouping variable ala split(). Each univariate series is turned into a multivariate zoo object. If the original series is multivariate, the output is a list of multivariate zoo objects.

Usage

Split.zoo(x, f)

Arguments

x	an univariate or multivariate zoo object
f	A grouping variable of the same length of x. A warning is given is length(f) is not the same as index size of x

Value

Returns a multivariate zoo object, or list of such.

Author(s)

John Verzani

See Also

split

Examples

if(require(zoo)) {
split.zoo = Split.zoo ## make generic
x = zoo(1:30,1:30)
f = sample(letters[1:5],30, replace=TRUE)
split(x,f)
}

UsingR documentation built on March 18, 2022, 7:32 p.m.