# as.zoo

From zoo v1.1-1
by Achim Zeileis

##### Coercion from and to zoo

Methods for coercing `"zoo"`

objects to other classes and
a generic function `as.zoo`

for coercing objects to class `"zoo"`

.

- Keywords
- ts

##### Usage

`as.zoo(x, ...)`

##### Arguments

- x
- an object,
- ...
- further arguments passed to
`zoo`

when the return object is created.

##### Details

`as.zoo`

currently has a default method and methods
for `ts`

, `its`

and `irts`

objects
(and `zoo`

objects themselves).

Methods for coercing objects of class `"zoo"`

to other classes
currently include: `as.ts`

, `as.matrix`

, `as.vector`

,
`as.data.frame`

, `as.list`

(the latter also being available
for `"ts"`

objects). Furthermore the coercion function
`as.its.zoo`

is provided, but works only
if the corresponding package is attached.

In the conversion between `zoo`

and `ts`

, the `zooreg`

class is
always used.

##### Value

`as.zoo`

returns a`zoo`

object.

##### See Also

##### Examples

```
## coercion to zoo:
## default method
as.zoo(rnorm(5))
## method for "ts" objects
as.zoo(ts(rnorm(5), start = 1981, freq = 12))
## coercion from zoo:
x.date <- as.POSIXct(paste("2003-", rep(1:4, 4:1), "-", sample(1:28, 10, replace = TRUE), sep = ""))
x <- zoo(matrix(rnorm(24), ncol = 2), x.date)
as.matrix(x)
as.vector(x)
as.data.frame(x)
as.list(x)
```

*Documentation reproduced from package zoo, version 1.1-1, License: GPL*

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