# diffinv

##### Discrete Integration: Inverse of Differencing

Computes the inverse function of the lagged differences function
`diff`

.

- Keywords
- ts

##### Usage

`diffinv(x, ...)`# S3 method for default
diffinv(x, lag = 1, differences = 1, xi, …)
# S3 method for ts
diffinv(x, lag = 1, differences = 1, xi, …)

##### Arguments

- x
- a numeric vector, matrix, or time series.
- lag
- a scalar lag parameter.
- differences
- an integer representing the order of the difference.
- xi
- a numeric vector, matrix, or time series containing the initial values for the integrals. If missing, zeros are used.
- …
- arguments passed to or from other methods.

##### Details

`diffinv`

is a generic function with methods for class `"ts"`

and `default`

for vectors and matrices. Missing values are not handled.

##### Value

A numeric vector, matrix, or time series (the latter for the
`"ts"`

method) representing the discrete integral of `x`

.

##### See Also

##### Examples

`library(stats)`

```
s <- 1:10
d <- diff(s)
diffinv(d, xi = 1)
```

*Documentation reproduced from package stats, version 3.3.3, License: Part of R 3.3.3*

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