vastorbit.VastFrame.numcol¶

VastFrame.numcol(exclude_columns: Annotated[str | list[str], 'STRING representing one column or a list of columns'] | None = None) → list¶

Returns a list of names of the numerical VastColumns in the VastFrame.

Parameters:: exclude_columns (SQLColumns, optional) – List of the VastColumns names to exclude from the final list.
Returns:: List of numerical VastColumns names.
Return type:: List

Examples

We import 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’s create a small dataset:

data = vo.VastFrame(
    {
        "empid": ['1', '2', '3', '4'],
        "weight": [140.5, 175, 156.5, 178],
        "height": [168.5, 175, 178.5, 170],
        "emp_cat":[933, 945, 723, 799],
    }
)
data

	Abc empid Varchar(1)	123 weight Decimal(11, 1)	123 height Decimal(11, 1)	123 emp_cat Integer
1	1	140.5	168.5	933
2	2	175.0	175.0	945
3	3	156.5	178.5	723
4	4	178.0	170.0	799

Rows: 1-4 | Columns: 4

Let’s retrieve the numeric type VastColumns in the dataset.

data.numcol()