nushell/docs/commands/dfr_rolling.md

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---
title: dfr rolling
layout: command
version: 0.59.0
---
Rolling calculation for a series
## Signature
```> dfr rolling (type) (window)```
## Parameters
- `type`: rolling operation
- `window`: Window size for rolling
## Examples
Rolling sum for a series
```shell
> [1 2 3 4 5] | dfr to-df | dfr rolling sum 2 | dfr drop-nulls
```
Rolling max for a series
```shell
> [1 2 3 4 5] | dfr to-df | dfr rolling max 2 | dfr drop-nulls
```