simplify the matlab coding

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ONION LIM
ONION LIM 2013-10-9
评论： Jan 2013-10-9
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?
  2 个评论
David Sanchez
David Sanchez 2013-10-9
Don't yo have a X3? Who is Xa? Are you sure that what your code here is what you want?
Jan
Jan 2013-10-9
@Onion Lim: Please notice, that nearly all questions in this forum concern "matlab" and "matlab code". Therefore these are not useful tags.

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回答（2 个）

ES
ES 2013-10-9
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'])
  3 个评论
显示 1更早的评论
Jan
Jan 2013-10-9
@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)

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Walter Roberson
Walter Roberson 2013-10-9

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