Learn more about SimEvents

Accessing Attributes of Entities

The table describes some ways you can access and use data that you have attached to an entity.

Use Attribute Values To...	Technique
Create a signal	Use the Get Attribute block. For example, see the subsystem of the model described in Adding Event-Based Behavior.
Create a plot	Use the Attribute Scope block and name the attribute in the Y attribute name parameter of the block. Alternatively, use the X-Y Attribute Scope block and name two attributes in the X attribute name and Y attribute name parameters of the block. For example, see the reference page for the X-Y Attribute Scope block.
Compute a different attribute value	Use the Attribute Function block. For example, see Attribute Names Unique and Accessible in Composite Entity.
Help specify behavior of a block that supports the use of attribute values for block parameters. Examples are the service time for a server and the selected port for an output switch.	Name the attribute in the block dialog box as applicable. For example, see Example: Using an Attribute to Select an Output Port.

Tip   Suppose your entity possesses an attribute containing one of these quantities: Service time Switching criterion Another quantity that a block can obtain from either an attribute or signal Use the attribute directly. This is better than creating a signal with the attribute value and ensuring that the signal is up-to-date when the entity arrives. For a comparison of the two approaches, see Example: Using a Signal or an Attribute.

Manipulating Attributes of Entities

Counting Entities

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