How to save a workspace variable from the matlab code itself?

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CHINTALA NIRMAL SRINIVAS 2020-5-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526252-how-to-save-a-workspace-variable-from-the-matlab-code-itself

评论： CHINTALA NIRMAL SRINIVAS 2020-5-18

I want to save a workspace variable from the matlab code itself. I am able to save the workspace variable using save command in command window but I do not want to give any command in the command window . I want to save the workspace vaiable with a command given in the matlab code itself. I tried save command or matlab.io.saveVariablesToScript() in the matlab code but it gives the error variable 'ans' not found ('ans' isthe workspace variable I want to save).

I am running this matlab code from python using matlab.engine so I can not give any command in the command window.

I want to know three things.

1) Can I save a workspace variable from python after it's run?

2) Can I save workspace variable from the command given in the matlab code itself?

3) Can I give which command needs to be run in the command window from the matlab code itself?

I tried first two but they gave the error. I have no idea about the third one.

Can somebody help me please?

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CHINTALA NIRMAL SRINIVAS 2020-5-18

在 MATLAB Online 中打开

save('path of the mat file','variable')
save('path of the mat file',variable)
matlab.io.saveVariablesToScript('path of the mat file',variable)

Rik 2020-5-18

The top one should have worked, if you are indeed in a Matlab environment.

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Answer 1

Image Analyst 2020-5-18

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526252-how-to-save-a-workspace-variable-from-the-matlab-code-itself#answer_433110

在 MATLAB Online 中打开

Doing

save('answers.mat', 'yourVariableName');

should work from either the command window, or from your script or function (m-file). Not sure about Python, but if your variable is in scope (in the current workspace when save() is called), then this should work. Change the mat filename to whatever you want, and of course change the variable name.

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CHINTALA NIRMAL SRINIVAS 2020-5-18

It says the variable is not found. But it produces the workspace variable when it runs. Could you please tell me what could be the reason?

CHINTALA NIRMAL SRINIVAS 2020-5-18

Got it .I was giving the variable name which is being displayed on the workspace but in the code the variable name is different. After I changed the name, it worked

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