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SysML Distilled: A Brief Guide to the Systems Modeling Language by Lenny Delligatti

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Chapter 9. Parametric Diagrams

The parametric diagram is a unique kind of SysML diagram, one that’s used to express information about a system’s constraints. These constraints generally take the form of mathematical models that determine the set of valid values within a running system. A parametric diagram is uniquely capable of conveying these mathematical models to stakeholders.

9.1. Purpose

SysML allows you to model equations and inequalities as constraint blocks. In Chapter 3, “Block Definition Diagrams,” you learned that a constraint block is a special kind of block that encapsulates a constraint expression: the equation or inequality you need to model.

Capturing a constraint expression in your SysML model, however, is simply a means to ...

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