R: Extracting/Replacing the Core Data of Objects

coredata {zoo}

R Documentation

Extracting/Replacing the Core Data of Objects

Description

Generic functions for extracting the core data contained in a (more complex) object and replacing it.

Usage

coredata(x, ...)
coredata(x) <- value

Arguments

`x`	an object.
`...`	further arguments passed to methods.
`value`	a suitable value object for use with `x`.

Value

In zoo, there are currently coredata methods for time series objects of class "zoo", "ts", "its", "irts", all of which strip off the index/time attributes and return only the observations. The are also corresponding replacement methods for these classes.

Examples

x.date <- as.Date(paste(2003, rep(1:4, 4:1), seq(1,20,2), sep = "-"))
x <- zoo(matrix(rnorm(20), ncol = 2), x.date)

## the full time series
x
## and only matrix of observations
coredata(x)

## change the observations
coredata(x) <- matrix(1:20, ncol = 2)
x