---
title: "init(categories:)"
framework: createmlcomponents
role: symbol
role_heading: Initializer
path: "createmlcomponents/ordinalencoder/transformer/init(categories:)"
---

# init(categories:)

Creates an ordinal encoder.

## Declaration

```swift
init(categories: Set<Category?>)
```

## Parameters

- `categories`: The unique values used for encoding.