fopen is not being supported in my MATLAB version. What else can I use?

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Anuradha Bhattacharya 2016-9-23

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https://ww2.mathworks.cn/matlabcentral/answers/304187-fopen-is-not-being-supported-in-my-matlab-version-what-else-can-i-use

编辑： Image Analyst 2023-3-26

Whenever I use fopen it is giving some or the other error. Please tell me an aletrnative.

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KSSV 2016-9-26

I strongly suggest you to read the documentation properly before using any function.

Walter Roberson 2016-9-26

if you are trying to use fopen() to write a file and you did not specify the path to the file, then you are probably not in a directory that you have permission to write in. The default directory when you start up MATLAB can end up being the one that MATLAB is installed in.

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James Tursa 2016-9-23

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编辑：Image Analyst 2023-3-26

在 MATLAB Online 中打开

Do you have the fopen function shadowed by another function or variable? What does this show:

which -all fopen

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John D'Errico 2023-3-26

在 MATLAB Online 中打开

@Alexander

That means you wrote some function named fopen. Find the function you wrote using this command:

which fopen -all
built-in (/MATLAB/toolbox/matlab/iofun/fopen)
/MATLAB/toolbox/matlab/serial/@serial/fopen.m           % serial method
/MATLAB/toolbox/instrument/instrument/@i2c/fopen.m      % i2c method
/MATLAB/toolbox/shared/instrument/@icinterface/fopen.m  % icinterface method

and rename the function you wrote to something else.

Alexander 2023-3-26