region.spread.range Function (GPL)

Syntax

region.spread.range(<algebra>)

or 

region.spread.range(<statistic function>)

<algebra>. Graph algebra, such as x*y. Refer to Brief Overview of GPL Algebra for an introduction to graph algebra.

<statistic function>. Another statistic function. The result of the embedded statistic is used to calculate region.spread.range.

Description

Calculates the minimum and maximum for a variable or variables identified by the algebra. That is, region.spread.range calculates the range of the variables. When using the interval, area, or edge graphic elements, this function results in one graphic element showing the range. All other graphic elements result in two separate elements, one showing the start of the range and one showing the end of the range.

Examples

Figure 1. Example: Range bar showing minimum and maximum of one variable
ELEMENT: interval(position(region.spread.range(jobcat*salary)))
Figure 2. Example: Range bar showing minimum of one variable to maximum of another
ELEMENT: interval(position(region.spread.range(jobcat*(salbegin+salary))))

Statistic Functions

See GPL Functions .