Integrate MATLAB with External Programming Languages and Systems - MATLAB & Simulink (original) (raw)

MATLAB® provides a flexible, two-way integration with other programming languages, allowing you to reuse legacy code. For a list of programming languages and the supported versions, see MATLAB Supported Interfaces to Other Languages.

Call C/C++ Code from MATLAB

MATLAB provides these features to help you integrate C/C++ algorithms into your MATLAB applications.

• A C/C++ shared library interface is a collection of functions dynamically loaded by an application at run time. Using a shared library has the advantage of packaging multiple library functions into one interface. In addition, MATLAB manages data type conversions.
  • Call C++ Library Functions - To call functions in a C++ shared library, use the clib namespace described inCall C++ from MATLAB.
  • Whenever possible, choose the C++ interface over the C-only interface. For information about C++ support, see these limitations.
  • To call functions in a C shared library, use the calllib function. For information, see Call C from MATLAB. This feature works best with C-only libraries, but has these limitations.
    If you want more control over data conversion and memory management, consider writing a MEX file.
• A MEX file is wrapper code around a C/C++ algorithm that handles the conversion of MATLAB data types to C types. MEX files provide better performance than calling functions through MATLAB shared library interfaces. Also, MEX files give you more programmatic control over data conversion and memory management.
  • Write C++ Functions Callable from MATLAB (MEX Files) use modern C++ programming features and, where possible, shared copies of data.
  • Write C Functions Callable from MATLAB (MEX Files) use the C Matrix API and is supported for existing MEX functions. MathWorks® recommends that whenever possible, choose C++ MEX over C MEX file applications. However, if your MEX functions must run in MATLAB R2017b or earlier, then write MEX functions with the C matrix library.
  • If you have multiple functions in a library or do not have performance issues, consider writing a C++ library interface.

These features require C/C++ programming skills to create a library interface or to write a MEX function. However, you can give the resulting library or MEX function to any MATLAB user. The end user calls the functionality like any MATLAB function, without knowing the underlying details of the C/C++ language implementation.

To call MATLAB from a C/C++ language program, see Call MATLAB from C++ or Call MATLAB from C.

Use Objects from Other Programming Languages in MATLAB

If you have functions and objects in another programming language, you can call them from MATLAB. You do not need to be a software developer to integrate these objects into your MATLAB application. However, you need access to third-party documentation for the libraries.

MATLAB supports calling functions and using objects in the following languages.

• Call C++ from MATLAB
• Call C from MATLAB
• MEX File Functions for C/C++ and Fortran
• Call Java from MATLAB
• Call Python from MATLAB
• Call .NET from MATLAB
• Use COM Objects in MATLAB

Call MATLAB from Another Programming Language

You can call MATLAB from another language using Engine Applications. Using MATLAB engine APIs, call MATLAB functions from your own application. MATLAB has APIs for the following languages.

• Engine API for C++
• Engine API for Java
• Engine API for Python
• Engine API for C
• Engine API for Fortran

To create an engine application, install a compiler that MATLAB supports and use the mex command to build the application.

Call Your Functions as MATLAB Functions

You can write your own functions and call them as MATLAB functions using MEX APIs. For more information, see Choosing MEX Applications. You can write MEX functions in the following languages.

• C++ MEX APIs
• C MEX APIs
• Fortran MEX APIs

To create a MEX file, install a compiler that MATLAB supports and use the mex command to build the function.

Communicate with Web Services

You can communicate with web services from MATLAB.

• MATLABRESTful web services functions allow non-programmers to access many web services using HTTP GET and POST methods.
• For functionality not supported by the RESTful web services functions, use the HTTP Interface classes for writing customized web access applications.
• If your web service is based on Web Services Description Language (WSDL) document technologies, then use the MATLABWSDL functions.

See Also

Topics

• MATLAB Supported Interfaces to Other Languages
• Supported and Compatible Compilers