Describe Activity Diagrams
Author executable activity diagrams for your architecture models or components to define and validate functional requirements. Use activity diagrams in System Composer™ to visualize data flow through actions. Create directed relationships with allocations from activity diagram elements to architecture model elements to further describe the functional design of your system.
Functions
systemcomposer.createActivity | Create System Composer activity diagram (Since R2024a) |
Blocks
| Initial Node | Dispatch control token at beginning of activity (Since R2024a) |
| Action Node | Process object tokens through MATLAB function or nested activity diagram (Since R2024a) |
| Pin | Direct tokens into or out of an action node (Since R2024a) |
| Parameter Node | Process tokens through a nested activity diagram (Since R2024a) |
| Decision or Merge Node | Route input tokens based on evaluation of MATLAB expressions, or merge multiple input tokens onto one output flow (Since R2024a) |
| Join or Fork Node | Synchronize multiple input tokens into one output, or replicate one input token on all output flows (Since R2024a) |
| Flow Final Node | Terminate one object or control flow (Since R2024a) |
| Activity Final Node | Terminate entire activity (Since R2024a) |
Tools
| Types Editor | Create custom data types (Since R2024a) |
| Allocation Editor | Create and manage model-to-model allocations (Since R2020b) |
Topics
- Describe System Behavior Using Activity Diagrams
Learn about and interact with activity diagrams in System Composer.
- Author Activity Diagrams
Create action nodes, token-based flows, merge nodes, and types for input pins.
- Simulate, Visualize, and Validate Activity Diagrams
Simulate, visualize, and debug activity diagrams in System Composer.
- Model Complex Objects in Activity Diagrams Using MATLAB Class Tokens
Model activity diagram that processes MATLAB class tokens.
Featured Examples
Simulate Mobile Robot with System Composer Workflow
Simulate a mobile robot architecture with a systems engineering workflow.
