About Formulas

Formulas are features used to define or constrain a parameter. A formula is a relation: the left part of the relation is the parameter to be constrained, the right part is a statement. After creating a formula, you can manipulate it like any other feature from its context menu. The formula language uses operators and functions of all types whereby you can perform operations on parameters.

This page discusses:

See Also
Creating a Formula

Display Formulas in the Tree

Formulas are relations and, as such, they can be displayed under the Relations node provided you check Relations in Me > Preferences > 3DEXPERIENCE Platform Common Preferences > Parameters Measures and Units > Parameters & Relations > Parameters tree view.

In addition, formulas can also be displayed under the Parameters node provided you check:

  • The Display formulas below the Parameter Tree View in Me > App Preferences > 3D Modeling > Multi Discipline Automated Engineering > Basics > Parameters & Relations > Parameters tree view.

Activity Parameter

A formula is a feature which is assigned a parameter called the activity. The activity value is a Boolean. If the activity is set to true, the parameter value cannot be calculated from the formula. If a formula is created for a parameter which is not already constrained by another formula, the activity of the new formula is set to true by default.

A parameter can be constrained by several formulas, but only one formula can be active at a time. Before activating a formula on a given parameter, you must deactivate the other formulas defined on the same parameter.

Activity value false true
Relation icon in the tree





Import of Formulas

Parameters as well as the associated formulas can be imported from an external file.

Important: In the Formula editor, enumerations values are nls values. For example, when working with a Boolean, true and false are displayed in your environment language. See About Parameters for more information on how to import formulas.