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hasValue

Find if element instance has property value

Since R2019a

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    Syntax

    result = hasValue(instance,property)

    Description

    example

    result = hasValue(instance,property) queries whether the instance instance has the given property property.

    Note

    This function is part of the instance programmatic interfaces that you can use to analyze the model iteratively, element-by-element. The instance refers to the element instance on which the iteration is being performed.

    Examples

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    Open Live Script

    Load the small unmanned aerial vehicle (UAV) model, create an architecture instance, and query whether an instance element has a property included.

    scExampleSmallUAV
model = systemcomposer.loadModel("scExampleSmallUAVModel");
instance = instantiate(model.Architecture,"UAVComponent","NewInstance");
queryResult = hasValue(instance.Components(1).Components(1),...
"UAVComponent.OnboardElement.Mass")
    queryResult = logical
   1

    Input Arguments

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    Element instance, specified as a systemcomposer.analysis.ArchitectureInstance, systemcomposer.analysis.ComponentInstance, systemcomposer.analysis.PortInstance, or systemcomposer.analysis.ConnectorInstance object.

    Property, specified in the form "<profile>.<stereotype>.<property>".

    Data Types: char | string

    Output Arguments

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    Query result, returned as a logical.

    Data Types: logical

    More About

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    Definitions

    TermDefinitionApplicationMore Information
    analysis

    Analysis is a method for quantitatively evaluating an architecture for certain characteristics. Static analysis analyzes the structure of the system. Static analysis uses an analysis function and parametric values of properties captured in the system model.

    Use analyses to calculate overall reliability, mass roll-up, performance, or thermal characteristics of a system, or to perform a SWaP analysis.
    analysis function

    An analysis function is a MATLAB® function that computes values necessary to evaluate the architecture using the properties of each element in the model instance.

    Use an analysis function to calculate the result of an analysis.
    instance model

    An instance model is a collection of instances.

    You can update an instance model with changes to a model, but the instance model will not update with changes in active variants or model references. You can use an instance model, saved in a MAT file, of a System Composer™ architecture model for analysis.

    		Run Analysis Function
    instance

    An instance is an occurrence of an architecture model element at a given point in time.

    An instance freezes the active variant or model reference of the component in the instance model.

    		Create a Model Instance for Analysis

    TermDefinitionApplicationMore Information
    stereotype

    A stereotype is a custom extension of the modeling language. Stereotypes provide a mechanism to extend the architecture language elements by adding domain-specific metadata.

    Apply stereotypes to model elements such as root-level architecture, component architecture, connectors, ports, data interfaces, value types, functions, requirements, and links. Functions only apply to software architectures. You must have a Requirements Toolbox™ license to apply stereotypes to requirements and links. A model element can have multiple stereotypes. Stereotypes provide model elements with a common set of property fields, such as mass, cost, and power.

    		Extend Architectural Design Using Stereotypes
    property

    A property is a field in a stereotype. You can specify property values for each element to which the stereotype is applied.

    Use properties to store quantitative characteristics, such as weight or speed, that are associated with a model element. Properties can also be descriptive or represent a status. You can view and edit the properties of each element in the architecture model using the Property Inspector.
    profile

    A profile is a package of stereotypes that you can use to create a self-consistent domain of element types.

    Author profiles and apply profiles to a model using the Profile Editor. You can store stereotypes for a project in one or several profiles. When you save profiles, they are stored in XML files.

    Version History

    Introduced in R2019a

    See Also

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