Simulink, receive data from Python Script

Hi, I have desing a model in order to control a simulator with simulink, but the data which I want to reproduce is from a PC game,

I have obtain this data on a python Script from the Sharedmemory. Is there any method to send this data from the Script to Simulink, or

directly read the data from the sharedmemory with Simulink?

Thanks, for your time.

Answer 1

[Satwik]

Here are some methods which can be leveraged to integrate data from a Python script into Simulink:

1) MATLAB Engine for Python: the MATLAB Engine API for Python can be used to send data from a Python script to MATLAB, which can then be used in Simulink.

• Install the 'MATLAB Engine' using the following command in your terminal or command prompt:

        >> python -m pip install matlabengine

• Modify the Python script to send data to MATLAB using the MATLAB Engine API.

        import matlab.engine
        import numpy as np
        
        % Start MATLAB engine
        eng = matlab.engine.start_matlab()
        
        % Create a numpy array in Python
        py_array = np.linspace(0.0, 6.28, 1000)
        
        % Convert numpy array to a MATLAB array
        matlab_array = matlab.double(py_array.tolist())
        
        % Put the array into the MATLAB workspace
        eng.workspace['mx'] = matlab_array
        
        % Stop MATLAB engine
        eng.quit()
        

For detailed information on the 'MATLAB Engine API' please refer to the foloowing documentation: https://www.mathworks.com/help/matlab/apiref/matlab.engine.matlabengine-class.html

2) File-Based Communication: write the data into a .CSV or .MAT file in Python and read it from Simulink.

• Write data to a .CSV or .MAT file

        import numpy as np
        import scipy.io
        
        % Example data
        data = np.random.rand(10)  % Replace with your actual data
        
        % Save to MAT file
        scipy.io.savemat('sim_data.mat', {'sim_data': data})
        

• Use a 'From File' block to read the data from the file: https://www.mathworks.com/help/simulink/slref/fromfile.html

I hope this proves useful!