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Asked by mary on 26 May 2013

how to interleave a matrix and deinterleave it?? so it gets back to its original state?

the cyclist on 26 May 2013

I suggest you give more detail and/or a small example of what you mean. I, for one, don't understand specifically what you mean by "interleave".

mary on 26 May 2013

interleaver: it rearrange or reshape the matrix deinterleaver : it restores the original arrangement of the maatrix

Image Analyst on 26 May 2013

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Answer by Azzi Abdelmalek on 26 May 2013

you can use reshape function. give an example of matrices you want to interleave

Azzi Abdelmalek on 26 May 2013

How do you want to change it?

Azzi Abdelmalek on 26 May 2013

There are many function to change your matrix

```flipud
fliplr
rot90
circshift
```
mary on 26 May 2013

i will try these .. thank you indeed

Answer by Image Analyst on 26 May 2013

Not sure what you mean, but here's one way/interpretation:

```m1 = magic(6)
m2 = ones(10, 6)
columns = size(m1, 2)
m1Rows = size(m1, 1)
m2Rows = size(m2, 1)
m3 = zeros(m1Rows+m2Rows, columns);
% Interleave.  If there's any difference in the number of rows,
% the mismatching rows will be zero.
% You could handle that differently if you want to,
% for example, just append the remaining rows
% of the taller array.
for row = 1 : max([m1Rows, m2Rows])
m3Row = 2 * (row-1)+1;
if row <= m1Rows
m3(m3Row, :) = m1(row, :);
end
if row <= m2Rows
m3(m3Row+1, :) = m2(row, :);
end
end
m3
```