---
title: "init(columns:estimator:)"
framework: createmlcomponents
role: symbol
role_heading: Initializer
path: "createmlcomponents/columnselector/init(columns:estimator:)"
---

# init(columns:estimator:)

Creates a select operation with an estimator.

## Declaration

```swift
init(columns: [String], estimator: Estimator)
```

## Parameters

- `columns`: An array of columns.
- `estimator`: An estimator.

## See Also

### Creating the selection

- [init(_:estimator:)](createmlcomponents/columnselector/init(_:estimator:).md)
- [init(_:transformer:)](createmlcomponents/columnselector/init(_:transformer:).md)