The MATLAB® Function Feature Node
MATLAB® functions are global in scope and you can use them in a model to define model settings such as
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Parameters
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Geometry settings
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Mesh settings
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Material properties
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Physics settings (domain conditions, boundary conditions, etc.)
Material properties and physics settings are evaluated while the model is solved whereas the features can be used while the model is constructed.
 
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Defining a MATLAB® Function in the COMSOL® Model
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Setting the Function Directory Path in MATLAB®
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Adding a MATLAB® Function with the COMSOL® API Syntax
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Function Input/Output Considerations
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Updating Functions
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Defining Function Derivatives