Check for missing argument or incorrect argument data type in call to function 'sinc'.

Question

Muhammad Baqir Sinarimbo 2021-4-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/803846-check-for-missing-argument-or-incorrect-argument-data-type-in-call-to-function-sinc

评论： Walter Roberson 2021-4-16

采纳的回答： Walter Roberson

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I am trying to plot this problem:

However, I am encountering the error in the title whenever i try to plot it. Here is my code so far (I am still at a)):

function labactivity52()
[x,y]=meshgrid(-8:0.5:8);
z=sinc(sqrt((x.^2)+(y.^2)));
mesh(x,y,z), xlabel('x'), ylabel('y'), zlabel('z'), title('Surface Mesh Plot')
end

Whenever I try to run the function to see its 3D plot, I encounter this line:

Check for missing argument or incorrect argument data type in call to function 'sinc'.

Error in labactivity52 (line 3)

z=sinc(sqrt((x.^2)+(y.^2)));

What am I doing wrong? Is the given equation wrong?

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Answer 1

Walter Roberson 2021-4-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/803846-check-for-missing-argument-or-incorrect-argument-data-type-in-call-to-function-sinc#answer_676641

在 MATLAB Online 中打开

The code works for me. You might have a sinc.m of your own that is interfering. Check

which -all sinc

You might see

/Applications/MATLAB_R2021a.app/toolbox/signal/signal/sinc.m
/Applications/MATLAB_R2021a.app/toolbox/signal/signal/@tall/sinc.m     % tall method
/Applications/MATLAB_R2021a.app/toolbox/symbolic/symbolic/@sym/sinc.m  % sym method

If you see your own function or a third-party toolbox function, then you might need to rename or delete something.

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Muhammad Baqir Sinarimbo 2021-4-16

I apologize for commenting again but I opted to use the form (sin x)/x instead of sinc (x) and managed to get my code to work now. Thank you for taking the time out of your day to help me fix my problem!