MATLAB: How to call Python Script in Matlab

MATLABpython

Hi,

I want to call python script into Matlab for further processing. I watched couple of threads mentioned at https://stackoverflow.com/questions/1707780/call-python-function-from-matlab but always gets an error when do this in command prompt

>> py.ReadIFSLog

Unable to resolve the name py.ReadIFSLog

I have MATLAB 2020a. What am I doing wrong?

Best Answer

I understand that you are trying to call your own python script from MATLAB command window.

The syntax that you are using is for calling python built-in modules from MATLAB, not scripts. Please have a look at the answer posted for a similar question.

Related Solutions

MATLAB: Does the MATLAB file script/function execute slower when passed to MATLAB using the standard input as opposed to when it is called from the MATLAB command prompt

This is the expected behavior. Passing a file to MATLAB through the standard input executes each line of the file at the command line and does not take advantage of the JIT.

To work around this issue, use the '-r' flag when calling MATLAB to pass a file to MATLAB which will cause the file to be executed as a script/function. For example,

matlab -r filename

MATLAB: How to make a script return an output argument in python

Scripts do not return output arguments, but they do store results in variables in the base workspace [1]. You can access the MATLAB engine workspace from Python [2].

Example

>>> import matlab.engine
>>> eng = matlab.engine.start_matlab()
>>> eng.triarea(nargout=0)
a =
      7.5000
>>> a = eng.workspace['a'] # get the variable 'a' from the workspace
>>> a
7.5
>>>

References

[1] Scripts vs. Functions

[2] Use MATLAB Engine Workspace in Python

Best Answer

Related Solutions

MATLAB: Does the MATLAB file script/function execute slower when passed to MATLAB using the standard input as opposed to when it is called from the MATLAB command prompt

MATLAB: How to make a script return an output argument in python

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