to_array

Convert to NDArray

Converts numeric columns of a DataFrame to a matrix (NDArray).

Parameters

• df (DataFrame): The input DataFrame.

• cols (List[Symbol|String]): (Optional) Columns to include. Defaults to all numeric.

Returns

A 2D array of the data.

Examples

mat = to_array(mtcars)
mat = to_array(mtcars, [$mpg, $wt])

See Also

dataframe