Nushell
Get Nu!
Getting Started
  • The Nushell Book
  • Command Reference
  • Cookbook
  • Language Reference Guide
  • Contributing Guide
Blog
  • English
  • 中文
  • Deutsch
  • Français
  • Español
  • 日本語
  • Português do Brasil
  • Русский язык
GitHub
Get Nu!
Getting Started
  • The Nushell Book
  • Command Reference
  • Cookbook
  • Language Reference Guide
  • Contributing Guide
Blog
  • English
  • 中文
  • Deutsch
  • Français
  • Español
  • 日本語
  • Português do Brasil
  • Русский язык
GitHub
  • Categories

    • Bits
    • Bytes
    • Chart
    • Conversions
    • Core
    • Database
    • Dataframe
    • Dataframe Or Lazyframe
    • Date
    • Debug
    • Default
    • Env
    • Experimental
    • Expression
    • Filesystem
    • Filters
    • Formats
    • Generators
    • Hash
    • History
    • Lazyframe
    • Math
    • Misc
    • Network
    • Path
    • Platform
    • Plugin
    • Prompt
    • Random
    • Removed
    • Shells
    • Strings
    • System
    • Viewers

polars rolling for dataframe

Rolling calculation for a series.

This command requires a plugin

The polars rolling command resides in the polars plugin. To use this command, you must install and register nu_plugin_polars. See the Plugins chapter in the book for more information.

Signature

> polars rolling {flags} (type) (window)

Parameters

  • type: rolling operation
  • window: Window size for rolling

Input/output types:

inputoutput
anyany

Examples

Rolling sum for a series

> [1 2 3 4 5] | polars into-df | polars rolling sum 2 | polars drop-nulls
╭───┬───────────────╮
│ # │ 0_rolling_sum │
├───┼───────────────┤
│ 0 │             3 │
│ 1 │             5 │
│ 2 │             7 │
│ 3 │             9 │
╰───┴───────────────╯

Rolling max for a series

> [1 2 3 4 5] | polars into-df | polars rolling max 2 | polars drop-nulls
╭───┬───────────────╮
│ # │ 0_rolling_max │
├───┼───────────────┤
│ 0 │             2 │
│ 1 │             3 │
│ 2 │             4 │
│ 3 │             5 │
╰───┴───────────────╯