# 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)`

```
# NOT RUN {
s <- 1:10
d <- diff(s)
diffinv(d, xi = 1)
# }
```

*Documentation reproduced from package stats, version 3.5.0, License: Part of R 3.5.0*

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