vastorbit.VastFrame.swap¶

VastFrame.swap(column1: int | str, column2: int | str) → VastFrame¶

Swap the two input VastColumns.

Parameters:

column1 (str | int) – The first VastColumn or its index to swap.
column2 (str | int) – The second VastColumn or its index to swap.

Returns:

self

Return type:

VastFrame

Examples

Let’s begin by importing vastorbit.

import vastorbit as vo

Hint

By assigning an alias to vastorbit, we mitigate the risk of code collisions with other libraries. This precaution is necessary because vastorbit uses commonly known function names like “average” and “median”, which can potentially lead to naming conflicts. The use of an alias ensures that the functions from vastorbit are used as intended without interfering with functions from other libraries.

Let us create a dummy dataset and swap its columns:

vdf = vo.VastFrame(
    {
        "val" : [0, 10, 20],
        "cat": ['a', 'b', 'c'],
    },
)

	123 val Integer	Abc cat Varchar(1)
1	10	b
2	20	c
3	0	a

Rows: 1-3 | Columns: 2

We can swap the categorical column and value columns:

vdf.swap("val", "cat")

	Abc cat Varchar(1)	123 val Integer
1	b	10
2	c	20
3	a	0

Rows: 1-3 | Columns: 2