Contents

init(column:)

Creates a new column of arrays of doubles from a given column whose elements can be converted to an array of doubles.

Declaration

init<T>(column: MLDataColumn<T>) where T : MLDataValueConvertible

Parameters

Discussion

Use this initializer to create a column of arrays of doubles from another column. Start by creating a column that is convertible to a column of arrays of doubles.

let doubleArrayString = "[1.0, 2.0, 3.0]"
let doubleArrayString2 = "[4.0, 5.0, 6.0]"
let stringsColumn = MLDataColumn([doubleArrayString, doubleArrayString2])
print(stringsColumn) // Prints ["[1.0, 2.0, 3.0]", "[4.0, 5.0, 6.0]"]

Then use init(column:) to convert the column to a column of arrays of doubles.

let doubleArrayColumn = MLDataColumn<[Double]>(column: stringsColumn)
print(doubleArrayColumn) // Prints [[1.0, 2.0, 3.0], [4.0, 5.0, 6.0]]

See Also

Creating a data column by converting another column