# winsorize! {#winsorize}

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`winsorize!(X, limit, [inclusive=true], [nanPolicy='omit'])`

## Details {#details}

Winsorize the input array. For details, see [winsorize](winsorize.md). The exclamation mark \(!\) means in-place change in DolphinDB.

