---
title: "init(doubles:)"
framework: createml
role: symbol
role_heading: Initializer
path: "createml/mluntypedcolumn/init(doubles:)"
---

# init(doubles:)

Creates a new column of doubles by converting the elements of another column.

## Declaration

```swift
init(doubles: MLUntypedColumn)
```

## Parameters

- `doubles`: A column with elements that are convertible to doubles.

## Return Value

Return Value A new untyped column of doubles; otherwise an invalid column if any element of the given column cannot be converted to Double.

## Discussion

Discussion Use this initializer to create a column of doubles from another column. As an example, to create a column with this initializer, first start with a column that is convertible to doubles. let stringColumn = MLUntypedColumn(["1.0", "2.0", "3.0", "4.0", "5.0"]) print(stringColumn) /* Prints...  ValueType: String  Values:        [1.0, 2.0, 3.0, 4.0, 5.0]  */ Then use init(doubles:) to convert the column to a column of doubles. let doublesColumn = MLUntypedColumn(doubles: stringColumn) print(doublesColumn) /* Prints...  ValueType: Double  Values:        [1.0, 2.0, 3.0, 4.0, 5.0]  */

## See Also

### Creating an untyped column by converting another column

- [init(ints:)](createml/mluntypedcolumn/init(ints:).md)
- [init(strings:)](createml/mluntypedcolumn/init(strings:).md)
- [init(sequences:)](createml/mluntypedcolumn/init(sequences:).md)
- [init(dictionaries:)](createml/mluntypedcolumn/init(dictionaries:).md)
- [init(multiArrays:)](createml/mluntypedcolumn/init(multiarrays:).md)