How to fix this " Warning: Function j has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict. "

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Altin Guberi 2015-3-21

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https://ww2.mathworks.cn/matlabcentral/answers/184311-how-to-fix-this-warning-function-j-has-the-same-name-as-a-matlab-builtin-we-suggest-you-rename-t

编辑： Stephen23 2015-3-21

I am using MATLAB R2015A on Windows 10. any idea?

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Answer 1

Stephen23 2015-3-21

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编辑：Stephen23 2015-3-21

Because i and j are both names of the inbuilt imaginary unit. Don't use these names and you wont get the warning.

You can check if name are already defined by using which. Note that shadowing inbuilt functions is generally a bad idea, unless you really know what you are doing, and is best avoided.

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Altin Guberi 2015-3-21

that warning appears as soon as I open Matlab. i mean without doing anything. I do not know yet what the impacts of it could be , however i remove it each time with two clc

Stephen23 2015-3-21

编辑：Stephen23 2015-3-21

Is this a new MATLAB installation? Do you have a startup function? Have you ever changed the MATLAB search path? Do you use i or j as variable names? Have you installed any third-party functions of toolboxes?

I notice you also posted to the Newsreader:

http://www.mathworks.com/matlabcentral/newsreader/view_thread/339978

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