Conversion of Matrix dimensions

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Fayyaz 2015-5-17

评论： Star Strider 2015-5-17

I have a matrix 81 by 81 i.e.

          1  2  .  .  81
1      a1,1  a1,2      a1,81
          
.          
.          
81     a81,1        a81,81

I need to convert it to a matrix of order 6561 (81*81) by 2 i.e.

1=a1,1

2=a1,2

. .

81=a81,81

Any help in this regard would be greatly appreciated. Thanks in advance.

Fayyaz 2015-5-17

Thanks all for your comments. Problem has been solved. :)

Star Strider 2015-5-17

编辑：Star Strider 2015-5-17

If ‘A’ is your matrix, either use the reshape function:

Av = reshape(A, [], 1);

or simply use the vector default:

Av = A(:);

EDIT — I didn’t see the repeating indices in the first column. To create them, use the repmat function:

Ix = repmat(1:81, 1, 81)';

Fayyaz 2015-5-17

Both of them are OK. thanks :)

Star Strider 2015-5-17

My pleasure!

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