User defined function error

This is my user defined fumction

function color_val= color(y,x)
  for j=1:3
    red(j)=RGB(y,x,j);
  end
  color_val=red;

But i get this error:-

Error: File: connect.m Line: 153 Column: 1
Function definitions are not permitted in this context.

Answer 1

[G PRAKASH]

program and function definition must be in separate files and function file must have same name as function

% main file
y = 1;
z = 2;
b = myfunc(y ,z)
disp(b)

% separate file with same fun name
function a = myfunc(y ,z)

a=x+z;

or

function main
 y = 1;
z = 2;
b = myfunc(y ,z)
disp(b)

function a = myfunc(y ,z)

a=x+z;

Answer 2

[ES]

Did you run the code in command window?

Matlab functions should be in m files, and as said above, the name of the function should be callable (i.e., the name of the file name should be same as the function.

Eg:

FileName is my_function.m

content of the file:

function ret_val=my_function(input1,input2)
ret_val=input1+input2;

then from command line you can call your my_function.

>> my_function(5,3)

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