MATLAB: Noob Question about Functions

cannot define a function on the command linefunction

So how come when I start my code with

function EA3()

I get a Error: function definitions are not permitted in this context. My friend started his code off with

function Assignment03
N=8;
L=[2 0 3 2 6 7 9 5];
.
.
.
.

I tried to mock this to play around with it but as soon as I press enter to go to line two after function it gives me that error. I have very little experience in Matlab so any help is highly appreciated. Thanks in advance.

Best Answer

Daniel - are you sure that you are starting your code off with the line `function EA3()`? Typically, this error message is because there is some code that appears before this line. For example, if the following is saved to a file named test.m

 clc;
 function EA3()
 % etc.

I observe the same error message.

With the exception of comments, no code can precede the function signature.

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MATLAB: (noob) Matlab Compiler Issue

The "NoClassDefFoundError" error is thrown because MATLAB is not able to locate Java Runtime libraries that are used by the MATLAB Compiler SDK.

There are several possible causes to this issue:

A. The installation is corrupted and there are .jar files missing from the MATLAB installation folder.
B. The classpath.txt file is missing references to Java Runtime libraries.

1. To take a look at the MATLAB search path, execute "pathtool" in the Command Window. This will open up the Set Path window with the list of folders that MATLAB parses. The start-up folder should be at the top.

You can try to restore the search path to the installation default by executing the following commands:

>> restoredefaultpath
>> rehash toolboxcache

However, this will not remove the start-up directory from the MATLAB search path. If the start-up folder contains M-files, try to remove them or move them to another folder which is not on the search path.

2. If the issue still persists, the installation might be corrupted. Remove MATLAB completely and install it again to resolve the issue.

MATLAB: Error message “Error: Function definitions are not permitted in this context.” for function with matrix

If you want the function and the test code all in the same m-file, you can but you need to put a function line at the beginning with the name of the m-file. Like if your m-file is called test.m, then inside that single file have all of this (both functions):

function test()
%%Read in data
A=xlsread('AandB','a:e')
b=xlsread('AandB','g:g')
%%Multiply A and B
x = multiply(A, b)
end
function [x] = multiply(A,b)
x=A*b;
end

Best Answer

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MATLAB: (noob) Matlab Compiler Issue

MATLAB: Error message “Error: Function definitions are not permitted in this context.” for function with matrix

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