# coredata

From zoo v1.5-6
by Achim Zeileis

##### Extracting/Replacing the Core Data of Objects

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

- Keywords
- ts

##### 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.

##### See Also

##### 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
```

*Documentation reproduced from package zoo, version 1.5-6, License: GPL-2*

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