get data from function

i have my problem to work with functions. do not get any results from it. I know that it work, so the problem is just by my execution of the function.

How can i avoid following error?

 
>> ref_model(1,2)
Index exceeds the number of array elements (2).

Error in ref_model (line 7)
I=p(2)./(d(:,1)+p(1))+p(3)./(d(:,1)+p(1)).^2+p(4)./(d(:,1)+p(1)).^4;
 
>> myQ(1)
Index in position 2 exceeds array bounds.

Error in myQ (line 5)
Q=sum(r(:,1).*(ref_model(x,r(:,1))-r(:,2)).^2);

Answer 1

[KSSV]

From the function r should be a m*2 matrix. It should have two columns. And x should be a 1*4 array.

[Elisbeth Brandner]

thanks for your support but i do not work:

>> x=[1 2 3 4]; myQ(x)
Index in position 2 exceeds array bounds.

Error in myQ (line 5)
Q=sum(r(:,1).*(ref_model(x,r(:,1))-r(:,2)).^2);

[KSSV]

r = rand(10,2) ; 
global r ;
x = 1:4 ; 
Q = myQ(x) ; 

Try avoiding gloabl, instead you can make it as a input to function.

[Walter Roberson]

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

[Elisbeth Brandner]

thanks a lot :) ! now i have a solution. i changed my function and now it works

[darova]

[KSSV]

@darova you can accept the answer as well.

[Walter Roberson]

For the first 10 days, only the person who asked the Question can Accept an Answer.