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element = addElement(interface,name) adds an element to an interface with default properties.

To remove an element from an interface, use the removeElement function.


element = addElement(interface,name,Name=Value) sets the properties of the element using name-value arguments.


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Create a new model newModel. Add a data interface newInterface to the interface dictionary of the model. Then, add a data element newElement with data type double.

arch = systemcomposer.createModel("newModel");
interface = addInterface(arch.InterfaceDictionary,"newInterface");
element = addElement(interface,"newElement",DataType="double")
element = 

  DataElement with properties:

      Interface: [1×1 systemcomposer.interface.DataInterface]
           Name: 'newElement'
           Type: [1×1 systemcomposer.ValueType]
           UUID: '2d267175-33c2-43a9-be41-a1be2774a3cf'
    ExternalUID: ''

Create a new model named 'newModel'. Add a physical interface 'newInterface' to the interface dictionary of the model. Then, add a physical element 'newElement' with type 'electrical.electrical'. Change the physical domain type to 'electrical.six_phase'.

arch = systemcomposer.createModel('newModel');
interface = addPhysicalInterface(arch.InterfaceDictionary,'newInterface');
element = addElement(interface,'newElement','Type','electrical.electrical');
element.Type = 'electrical.six_phase';
element = 

  PhysicalElement with properties:

           Name: 'newElement'
           Type: [1×1 systemcomposer.interface.PhysicalDomain]
      Interface: [1×1 systemcomposer.interface.PhysicalInterface]
           UUID: '32e4c51e-e567-42f1-b44a-2d2fcdbb5c25'
    ExternalUID: ''

Input Arguments

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Element name, specified as a character vector or string. An element name must be a valid MATLAB® variable name.

Data Types: char | string

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: addElement(interface,"newElement",DataType="double",Dimensions="2",Units="m/s",Complexity="complex",Minimum="0",Maximum="100",Description="Maintain altitude")

Data type, specified as a character vector or string for a valid MATLAB data type. The default value is double.

Example: addElement(interface,"newElement",DataType="double")

Data Types: char | string

Dimensions, specified as a character vector or string. The default value is 1.

Example: addElement(interface,"newElement",Dimensions="2")

Data Types: char | string

Units, specified as a character vector or string.

Example: addElement(interface,"newElement",Units="m/s")

Data Types: char | string

Complexity, specified as a character vector or string. The default value is real. Other possible values are complex and auto.

Example: addElement(interface,"newElement",Complexity="complex")

Data Types: char | string

Minimum, specified as a character vector or string.

Example: addElement(interface,"newElement",Minimum="0")

Data Types: char | string

Maximum, specified as a character vector or string.

Example: addElement(interface,"newElement",Maximum="100")

Data Types: char | string

Description, specified as a character vector or string.

Example: addElement(interface,"newElement",Description="Maintain altitude")

Data Types: char | string

Physical domain of physical element, specified as a character vector or string of a partial physical domain name. For a list of valid physical domain names, see Domain-Specific Line Styles (Simscape).

Example: addElement(interface,"newElement",Type="electrical.six_phase")

Data Types: char | string

Output Arguments

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More About

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TermDefinitionApplicationMore Information
interface data dictionary

An interface data dictionary is a consolidated list of interfaces and value types in an architecture and where you use them in the architecture.

You can save local interfaces on a System Composer™ model in an interface data dictionary using the Interface Editor. You can reuse data dictionaries between models that need to use a given set of interfaces, elements, and value types. Data dictionaries that you attach to models are stored in separate SLDD files.

data interface

A data interface defines the kind of information that flows through a port. The same interface can be assigned to multiple ports. A data interface can be composite, meaning that it can include data elements that describe the properties of an interface signal.

Data interfaces represent the information that is shared through a connector and enters or exits a component through a port. Use the Interface Editor to create and manage data interfaces and data elements and store them in an interface data dictionary for reuse between models.

data element

A data element describes a portion of an interface, such as a communication message, a calculated or measured parameter, or other decomposition of that interface.

Data interfaces are decomposed into data elements:

  • Pins or wires in a connector or harness.

  • Messages transmitted across a bus.

  • Data structures shared between components.

value type

A value type can be used as a port interface to define the atomic piece of data that flows through that port and has a top-level type, dimension, unit, complexity, minimum, maximum, and description.

You can also assign the type of data elements in data interfaces to value types. Add value types to data dictionaries using the Interface Editor so that you can reuse the value types as interfaces or data elements.

Create Value Types as Interfaces
owned interface

An owned interface is an interface that is local to a specific port and not shared in a data dictionary or the model dictionary.

Create an owned interface to represent a value type or data interface that is local to a port.

Define Owned Interfaces Local to Ports

An adapter connects two components with incompatible port interfaces by mapping between the two interfaces. An adapter can act as a unit delay, rate transition, or merge. You can also use an adapter for bus creation. Use the Adapter block to implement an adapter.

With an adapter, you can perform functions on the Interface Adapter dialog box:

  • Create and edit mappings between input and output interfaces.

  • Apply an interface conversion UnitDelay to break an algebraic loop.

  • Apply an interface conversion RateTransition to reconcile different sample time rates for reference models.

  • Apply an interface conversion Merge to merge two or more message or signal lines.

  • When output interfaces are undefined, you can use input interfaces in bus creation mode to author owned output interfaces.

Version History

Introduced in R2019a

See Also