# init(column:) Creates a new column of doubles from a given column whose elements can be converted to doubles. ``` init(column: MLDataColumn) where T : MLDataValueConvertible ``` ## Parameters `column` An [`MLDataColumn`](/documentation/CreateML/MLDataColumn) of elements convertible to . ## Discussion Use this initializer to create a column of doubles from another column. Start by creating a column that is convertible to a column of doubles. ```swift let stringsColumn = MLDataColumn(["1.0", "2.0", "3.0", "4.0", "5.0"]) print(stringsColumn) // Prints ["1.0", "2.0", "3.0", "4.0", "5.0"] ``` Then use [`init(column:)`](/documentation/CreateML/MLDataColumn/init(column:)-86ge9) to convert the column to a column of doubles. ```swift let doublesColumn = MLDataColumn(column: stringsColumn) print(doublesColumn) // Prints [1.0, 2.0, 3.0, 4.0, 5.0] ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)