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

# fitted(to:validateOn:eventHandler:)

Returns the tabular transformer fitted using the provided tabular estimator.

## Declaration

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

## Parameters

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

## Return Value

Return Value The a fitted tabular transformer.

## See Also

### Fitting

- [Transformer](createmlcomponents/transformer.md)