null_ratio

pymovements.measure.null_ratio(column: str, column_dtype: DataType) → Expr

Ratio of null values to overall values.

In case of list columns, a null element in the list will count as overall null for the respective cell.

Parameters:

• column (str) – Name of measured column.

• column_dtype (pl.DataType) – Data type of measured column.

Returns:

Null ratio expression.

Return type:

pl.Expr