---
title: "init(columnSelection:concatenatedColumnName:)"
framework: createmlcomponents
role: symbol
role_heading: Initializer
path: "createmlcomponents/columnconcatenator/init(columnselection:concatenatedcolumnname:)"
---

# init(columnSelection:concatenatedColumnName:)

Creates a concatenator that concatenates numeric columns into a new column of ML shaped array.

## Declaration

```swift
init(columnSelection: ColumnSelection = .all, concatenatedColumnName: String = "features")
```

## Parameters

- `columnSelection`: A selection of columns to concatenate.
- `concatenatedColumnName`: The name of the resulting shaped array column.