difference Collision Modifier (GPL)

Syntax

<element type>.difference

<element type>. A valid element type.

Description

Clips graphic elements and draws the difference between dichotomous values. The aesthetic value associated with the greater value in a group determines the aesthetic for the result. This function is used to create a difference area graph. It is useful to compare the result to the one obtained when using the stack position modifier.

Examples

Figure 1. Example: Difference area chart

ELEMENT: area.difference(position(summary.sum(jobcat*salary)), color(gender))