
Key: SYSML253

Status: open

Source: DEKonsult ( Mr. Hans Peter de Koning)

Summary:
The current graphical notation for parameters is similar to SysML v1, i.e. a (rounded) square attached to outside of the border of an action symbol. A directional parameter has a line arrow indicating in, out or inout direction. The notation is inconsistently depicted: both full squares outside the border and half squares outside the border (like in SysML v1) are used. See e.g., Representative Notation Table in section 7.16.1 page 194.
There should be a single standard notation that is clearly differentiated from port symbols. Also, the direction arrows should be clearly readable in large and busy diagrams with many parameters (nested and nonnested).
Alternative parameter symbol notation has been developed that uses a circular shape that straddles the border of the owning action (definition or usage), and has solid triangular arrow symbols.

Reported: SysML 2.0a1 — Wed, 26 Apr 2023 22:32 GMT

Updated: Wed, 10 Apr 2024 00:41 GMT
SYSML2 — Parameter symbol notation needs improvement
 Key: SYSML253
 OMG Task Force: Systems Modeling Language (SysML) 2.0 FTF