Class Name: Scale Control Link

Superclass - Control Link

Definition

The specialized Control Link used to provide the connection between an ordered aggregation of Expressions and the target fields of a Scale.

The expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines Scale's scale_amount field.

The lower_expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines the lower limit for Scale's scale_amount.

The upper_expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines the upper limit for Scale's scale_amount.

Primary Page in DRM Diagram:

• 17

Secondary Pages in DRM Diagram:

• 7

Example

FAQs

Constraints

Composed of (two-way)(inherited)

• one or more {ordered} Expressions

Component of (two-way)

• one or more Scales

Inherited Field Elements

Field Elements

Notes

Fields Notes

description

 A text description of what the Control_Link is for

expr_index

 index of the expression whose value controls
 the scale_amount field of the affected <Scale>

lower_index

 index of the expression defining the lower limit of the scaling
 An upper_index value of 0 means no lower limit was defined.

upper_index

 index of the expression defining the upper limit of the scaling.
 An upper_index value of 0 means no upper limit was defined.