Managing Matrix Content Using Loop ?
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e.g i have variable data that containt matrix like these ;
a1 b1 c1
a2 b2 c2
a3 b3 c3
and i wanted it stored like :
a1
a2
a3
b1
b2
b3
c1
c2
c3
I use looping
inc=1;
[s1,s2]=size(data);
for x=1:s2
for y=1:s1
dataStored(inc)=data(y,x);
inc=inc+1;
end
end
It's work, but on a very large amount of data like data < 512x3671 int 16 > take endless time to wait. Is there any way simple to do that? Or maybe my code is wrong ?
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Cedric
2013년 3월 24일
편집: Cedric
2013년 3월 24일
>> A = magic(3) % Just an example..
A =
8 1 6
3 5 7
4 9 2
>> v = A(:) % Read A as a column vector (linear indexing).
v =
8
3
4
1
5
9
6
7
2
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Cedric
2013년 3월 25일
편집: Cedric
2013년 3월 25일
Well, [b;0] adds only one 0 element to b and look at the size of each of your vectors.. the size difference is much greater than just one element. It is 150 actually. Now if it is really meaningful to add 150 0's to b, you can do it as follows:
bext = [b; zeros(150,1)] ;
c = [a, bext] ;
but as far as I'm concerned, it would be a good investment of your time to read a tutorial, so you understand at least the basics about array manipulation in MATLAB.
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