How can Python call a MATLAB function?

Python can call MATLAB functions using the matlab.engine module. Make sure that MATLAB Engine API for Python is installed first.

Here is a simple example demonstrating how to call the sqrt function in MATLAB from Python.

import matlab.engine

# 启动MATLAB引擎
eng = matlab.engine.start_matlab()

# 调用MATLAB的sqrt函数
result = eng.sqrt(4.0)

# 打印结果
print(result)

# 关闭MATLAB引擎
eng.quit()

In this example, eng.sqrt(4.0) invokes MATLAB’s sqrt function to calculate the square root of 4. The result is stored in the result variable and printed using a print statement.

It is important to note that when calling MATLAB functions in Python, the data types returned are in MATLAB’s format and need to be converted to be used in Python. Some common conversion functions include list, str, and float.

Additionally, if you need to pass parameters to a MATLAB function, you can directly pass the parameter values in the function call. Parameters are passed using MATLAB syntax, for example eng.myfunc(1, 2, ‘param’). If you need to pass more complex parameter types, such as structs or matrices, you can use MATLAB data types for the transfer.

After using the MATLAB engine, you should close it and release resources by using eng.quit().