Plotting Heat Maps

Heat map is a graphical representation of data where the individual values contained in a matrix are represented as colors.

It contains the following attributes:

Attribute

Mandatory

Constraints

x

Either x or y must be specified


y

Either x or y must be specified


Weight

No

It cannot be a nominal value

Properties

Category

Properties

Description

X attribute

Number of region plotted on the x axis

Number of regions plotted on the x axis.

Y attribute

Number of region plotted on the y axis

Number of regions plotted on the y axis.

General parameters

Displayed value

The value displayed in the plot.

Possible values are standard, total percentage or target percentage.

Weight attribute

Operator

The operator applied to the values of the Weight attribute.

Possible values are average, maximum, median, minimum, mode and sum.

Examples

The following examples are based on the Adult dataset.

Scenario data can be found in the Datasets folder in your Rulex installation.

Type

Description

Result

Basic heat map

Dragging and dropping the occupation attribute onto the x cell and the age attribute onto the y cell and selecting Heat Map in the Plot cell will display a heat map associated to these two variables.

Heat map with weight

Dragging and dropping the capital-gain attribute onto the Weight cell will display the just built heat map weight-based on capital-gain values.

In this case, the heat map is not built based on raw frequencies, but on the Weight attribute.