Astah User's Guide

Sequence Diagram




Create Diagram

  • Go to [Diagram] - [Sequence Diagram]
  • Create from the pop-up menu in the Structure Tree.


Hide Diagram Frame

Select the Sequence Diagram in the Structure Tree, then check off the [Frame Visibility] in the Propety view.
frame

TIPS: Hide diagram frame by default
You can hide diagram frame by default in the System Properties.


Sequence Diagram Tool Palatte

This is the tool palatte of Sequence Diagram, for all the common tools, check out here.

Sequence Tool Bar

ButtonItem
SelectSelect
LifelinesLifeline
Sequence MessagesMessage
Asynchronous MessageAsynchronous Message
Create MessageCreate Message
Destroy MessageDestroy Message
ButtonItem
Reply MessageReply Message
StopStop
TimeConstraintTime Constraint
CombinedFragmentCombinedFragment
InteractionseInteraction Use
State InvariantState Invariant


Create a Lifeline

There are three ways to create Lifeline.

  1. Double-click on a Sequence Diagram.
  2. Select [Lifeline] on the Tool palatte and click on a diagram.
  3. Drag Class from the Structure Tree on to Sequence Diagram.
TIPS: Show Actor as Lifeline on Sequene Diagram
By dragging an Actor from the Structure Tree to Sequence Diagram, you can represent lifeline in Actor on the Sequence Diagram.





TIPS: Align Lifeline length
Right-click on the Sequence Diagram, then you will have menu to adjust all the lifeline length.



Message

Create Message

There are two ways to create Message.

  1. Choose [Message] or [Asynchronous Message] in the Tool palatte and click two lifelines.
  2. Use Suggest Feature.
TIPS: Adjust ExecutionSpecification length
You can adjust the ExecutionSpecification length by right-clicking on diagram and select [Adjust ExecutionSpecification Length].
AdjustExecution Specification Length

Create a Found Message

Select [Synchronous Message] or [Asynchronous Message] from the Tool palatte and click target Lifeline.



Create a Lost Message

Select [Synchronous Message] or [Asynchronous Message] from the Tool palatte and click Lifeline and then anywhere other than Lifeline.



Create a Gate

Select [Synchronous Message] or [Asynchronous Message] from the Tool palatte and click on a diagram frame then Lifeline.



Create a Reply Message

There are two ways to create Reply Message.

  1. Select [Reply Message] from the Tool palatte and click a lifeline.
  2. Turn [Reply Message Mode] on the Tool palatte and create Messages.


CombinedFragment

Select [CombinedFragment] on the Tool palatte and click on Diagram.



Create an Operand

You can create Operand from the CombinedFragment's Property view or diagram's pop-up menu.



TIPS: Define loop in the CombinedFragment
You can enter texts and numbers from the CombinedFragment's Property View.


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