`dataFrame.column.missing — proportion()`

Description

The proportion() method of the missing object returns the proportion of missing values in the selected column.

Signature

dataFrame.column(columnName).missing.proportion()

Scope: dataFrame
Family: missing
Returns: number

Argument

columnName (string): The name of the column from which to count values.

Returns

proportion (number): The number of missing values in the selected column.

Example

// log the proportion of missing values in the 'revenue' column
var count = dataFrame.column('revenu').missing.proportion();

// log the count
notebook.log(count);