---
title: "fitted(to:eventHandler:)"
framework: createmlcomponents
role: symbol
role_heading: Instance Method
path: "createmlcomponents/tabulartransformertoupdatableestimatoradaptor/fitted(to:eventhandler:)"
---

# fitted(to:eventHandler:)

Returns the pre-defined transformer.

## Declaration

```swift
func fitted(to input: DataFrame, eventHandler: EventHandler? = nil) async throws -> Transformer
```

## Parameters

- `input`: A data frame containing examples.
- `eventHandler`: An event handler.

## Return Value

Return Value The pre-defined transformer.

## See Also

### Fitting

- [update(_:with:eventHandler:)](createmlcomponents/tabulartransformertoupdatableestimatoradaptor/update(_:with:eventhandler:).md)