MATLAB Why Does My Matlab Function Say Input Argument 'u' is Undefined?

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The user is encountering an error in MATLAB when trying to use a custom function named "coloca." The error message indicates that the input argument "u" is undefined, suggesting that the function is being called without providing the necessary argument. To resolve this issue, the user needs to ensure that they are correctly calling the function with a valid input value for "u." For example, the function should be called as "coloca(value)" where "value" is a numeric input. Clarifying the function call and ensuring the argument is defined should fix the error.
shaqdiesel
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need urgent help

I'm a beginner using matlab, I saw this function working:

function une=coloca(u)
num=1:256;
val=288-(u*3000);
une(1,:)=val;
une(2,:)=num;

but when I try to use it, this error appears:

? Input argument "u" is undefined.

Error in ==> une at 3
val=288-(u*3000);

What could be the problem? Could someone help me ?
 
Last edited:
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How do you call the function?
 

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