Box Plot

Visualizes the attributes of a data set in box plot format.

Boxplot operator icon

Information at a Glance

Category	Explore
Data source type	DB, HD
Sends output to other operators	No
Data processing tool	Pig

Use this operator to create a graphical representation of a data set's attributes using the box-and-whisker diagrams.

For each box-and-whisker, the following applies.

The bottom and top of the box indicate the 25th and 75th percentile of the data.
The band in the middle of the box indicates the 50th percentile (median).
The bottom and top of the whisker represents the minimum and maximum within the data set.
The mean is denoted by a small circle.

The Box Plot operator allows you to choose the following three attributes (columns) in the data table:

X dimension (Analysis Type) - Accepts a category-type attribute to construct the box plot's X-axis.
Y dimension (Analysis Value) - Accepts a numerical attribute to construct the box plot's Y-axis.
Grouped dimension (Analysis Series) - Accepts a category-type attribute, which is shown in diagrams of different colors.

Input

A data set from the preceding operator.

Configuration

Parameter	Description
Notes	Any notes or helpful information about this operator's parameter settings. When you enter content in the Notes field, a yellow asterisk is displayed on the operator.
Analysis Series	The categorical column for the groups.
Analysis Type (X-axis)	The categorical column for the X-axis.
Analysis Value (Y-axis)	The numerical column for the Y-axis.
Use approximation (faster)	Specify whether to use approximation - Yes (the default) or No.

Output

Visual Output: A box plot diagram.
Data Output: None. This is a terminal operator.

Example

The following example shows monthly income (Analysis Value) for delinquent/non-delinquent credit customers (AnalysisType) grouped by the Number of Times 90 Days Late (Analysis Series).