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Not enough input arguments

Asked by Anna
on 27 Jul 2013

Hi all,

I am very new to matlab and programming in general. I am having difficulty with functions.

Trying to grip the basics i entered this which I saw online:

function [y] = Square(x) y = x^2 return

I get the error message "Not enough input arguments" If anyone can tell me in basic terms what is going on that would be much appreciated.


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2 Answers

Answer by per isakson
on 27 Jul 2013
Edited by per isakson
on 27 Jul 2013


    >> seven_raised_to_two = my_Square( 7 );


    function  y = my_Square(x) 
       y = x^2; 

are three lines in a separate file named my_Square.m

Neither [y] nor return is wrong, but ...


To be sure not to cause a name conflict my_Square is better, sice there is a function named square in the signal-something-toolbox.

    >> which square
    C:\Program Files\MATLAB\R2013a\toolbox\signal\signal\square.m


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Answer by Jan Simon
on 27 Jul 2013

Your function looks correct. I assume, you called it without an input argument:


instead of providing the input:



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