simplify the matlab coding

guys, i got a code like this

X0=[938.857; 894.100; 956.706; 878.926; 1021.071; 911.951; 959.432; 893.034; 954.470]
X2=X0(1);
Y2=X0(2);
Y3=X0(3);
X4=X0(4);
Y4=X0(5);
X5=X0(6);
Y5=X0(7);
X6=X0(8);
Y6=X0(9)

how can i simplify it?

and also this

for number = 1:n;
    iteration = number;
    if iteration ==1;
        fprintf('Iteration = %2.0f\n',iteration)
        X0=X0;
        X2=X0(1);
        Y2=X0(2);
        Y3=X0(3);
        X4=X0(4);
        Y4=X0(5);
        X5=X0(6);
        Y5=X0(7);
        X6=X0(8);
        Y6=X0(9);

      else
          fprintf('Iteration = %2.0f\n',iteration)
          X0=Xa;
          X2=X0(1);
          Y2=X0(2);
          Y3=X0(3);
          X4=X0(4);
          Y4=X0(5);
          X5=X0(6);
          Y5=X0(7);
          X6=X0(8);
          Y6=X0(9);

      end

any idea how to simplify it?

[David Sanchez]

Don't yo have a X3? Who is Xa? Are you sure that what your code here is what you want?

[Jan]

@Onion Lim: Please notice, that nearly all questions in this forum concern "matlab" and "matlab code". Therefore these are not useful tags.

Answer 1

[ES]

I would suggest you to use arrays instead of variables like X1, X2, Y1, Y2 etc. That is, in place of X1, X2, Y1, Y2 etc use X(1), X(2). You can iterate through input and assign to X(i).

However, if you need to use X1, X2 etc for some reason, try eval(['X',num2str(i),'=X0'])

[ONION LIM]

not very understand...

[Jan]

@Onion Lim: Please read this and Walter's answer again until you understand it. A pile of variables called X1, X2, X3, ... is a really bad idea, because the index is hidden inside the name. Better use and index as index: X(1), X(2), X(3), ... In your case something like this means:

X = X0(1:2:end)
Y = X0(2:2:end)

[ONION LIM]

i see, thanks

Answer 2

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F