Function with duplicate name cannot be defined

I have named the function name and .m file the same, and i am getting the error. If i dont it says it should be the same. someone help me

[Aishwarya Bangalore Kumar]

Thank you

Answer 1

[Star Strider]

Rename your function to be different from the MATLAB function name.

For example, if the MATLAB function name is qwerty.m, rename yours as ‘myqwerty.m’, and call it appropriately in your code.

[Star Strider]

Aishwarya Bangalore Kumar’s Comment moved here —

Thank you

[Star Strider]

If my Answer solved your problem, please Accept it!

Answer 2

[Image Analyst]

The function name and the m-file name should be the same. For example, if it's called MyFunction(), then you should have an m-file called MyFunction.m and inside should be a function line followed by code:

function output = MyFunction(input1, input2)
% Code follows.....

If you're still getting that error message, try putting this on the command line:

>> which -all MyFunction

Where, of course, you replace MyFunction with the actual name of the function/m-file that you're using.

Please copy and paste ALL the red text that you are seeing, along with the results of the which statement, back here if you still need help.

[Max Jesurum]

Hello,

I have written a function to finish my physics homework and I'm getting the same error.

>> which -all calc
C:\Users\maxje\Documents\MATLAB\calc.m

[Walter Roberson]

Is your calc.m a script that contains inside it also a "function calc" ?

When you use the R2016b and later facility to put a function inside a script file (that is, a .m file that does not begin with "function" or "classdef") then the function(s) inside the script may not have the same name as the script itself.

[Kendall Gibson]

This was the issue with mine, thank you

Answer 3

[Mina Yazdani]

Hi,I am doing a homework and i have to use a certain function name, which is "function [B]=even_index(A)". But i keep getting the same error. And i can't change the name cause the professor asked for this specific name. Could you help me?

Error: File: even_index.m Line: 4 Column: 14
Function with duplicate name "even_index" cannot be defined.

[Image Analyst]

In the command window, what does this show:

>> which -all even_index

You probably have multiple files with the same name. Get rid of the others that you don't need.

Attach your file, or at least show us line1 1-4 if that's not the case.

[Walter Roberson]

This will happen if you have a script named even_index that tries to define a function named even_index inside it.

When you define a function in a script, the function must have a different name than the script does.

[Sneha Thakur]

Hi

I had similar issues. I had written few commands before the beginning of my function, which should not have been there, as

clc;clear all;

function y = MyFcn(x)

.....

end

After removing clc; clear all, it worked fine without this error.

Please check your function script and remove any duplicate name files if any in the folder.

thanks

Sneha