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One Model, Many Interests, Many Views
Constraints are shown as nodes with their various equations and variables. Lines connecting the nodes
represent the mappings between systems parameters. These lines are labeled with the local variable /
parameter name at each end. Parametric values from architectural entities can be represented as ports
on the diagram frame or as simple nodes within the diagram.
The interconnected, spider-like nature of the parametric diagram helps communicate the linked nature
of the analytics that govern a system. At a detail level, the diagrams communicate the mathematical
relationship between key systems parameters to engineers and other stakeholders. At a more abstract
level, the same diagram is effective in communicating the interdependencies to a non-technical
audience. However, parametric diagrams come with a cautionary note that is relevant regardless of
the audience. Simply because one can represent equations and interrelationships graphically does not
mean that one should. Parametric diagrams are easily – and often – overdone. Rather than representing
absolutely everything to an atomic level of detail, parametric diagrams are often best limited to the key
systems equations.
Mapping for the Parametric Diagram