Explanation:
A function you are trying to call expects fewer input/output arguments, or more input/output arguments, than you have provided to it.
Common causes:
- You have passed a function more input arguments than it expected to receive, perhaps by passing a list of inputs rather than a vector of inputs, or have tried to obtain two outputs from a function that only returns one.
- You have multiple functions with the same name. One possible way this can happen is when you create a function with the same name as a built-in MATLAB function. To identify which version of the function MATLAB is calling, use the which function as follows:This will show you all instances of the function that MATLAB can access. If you find a custom function, rename or remove it to avoid conflicts with MATLAB's built-in functions.which -all <function-name> % replace <function-name> with the name of the function you are calling
Solution:
Verify that you have specified the correct number of input and/or output arguments. If necessary, use the 'which' function to determine which version of the function MATLAB is calling.
To determine the number of input and output arguments in a function definition, use 'nargin' and 'nargout' with the function name in the MATLAB Command Window. For example, the following code indicates that the 'minus' function requires two input arguments.
nargin('minus')
If you are writing a new function and you see these errors, make sure that the function declaration contains sufficient arguments.
Example demonstrating this error:
TooManyArguments.m (attached)
