Figure 7-15 SysML interaction diagram
Activity diagrams in SysML provide the ability to represent continuous flow; this could not be done [as well?] in UML. However, we have found that interaction diagrams better express the semantics of collaboration. Additionally, we have found it simpler to extract information automatically from interaction diagrams; nevertheless, we know that activity diagrams are used extensively by major practitioners.12
12For a more detailed discussion of activity diagram semantics and usage in SysML, see Balmelli’s article, cited in footnote 8 on page 160, pp.
