How to store different # of values, obtained in iterations, in Matrix / array ?
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If I have some matrix/ array say A(x,y) where 'x' is iteration # (lets consider here 2 iterations) and 'y' is # of values in that iteration. Now during 1st iteration if I obtain 5 values, I store it in A (1,:) i.e. for example,
A(1,1) = 2, A(1,2) = 9, A(1,3) = 1, A(1,4) = 4 A(1,5) = 8.
then in second iteration if I know that I will obtain only 2 values and I want it to be stored in A(2,:) i.e.,
A(2,1) = 5; A(2,2) = 7.
How to store only 2 values? Because Matlab automatically takes A(2,3) , A(2,4) and A(2,5) as zeros.
I don't want the matlab to automatically allocate space for zeros. I mean I want to get only the space as A(1,:) = 5 values and A(2,:) as 2 values and I don't want zeros stored or the space to store it.
I hope some one can understand my question correctly and if you did Could you please let me know How can I do that?
回答 (1 件)
Ryan 2012 年 7 月 29 日
編集済み: Ryan 2012 年 7 月 29 日
I think I deciphered your question enough to give you an answer: use cell notation.
All rows/columns of a matrice are required to be the same length, hence why it's padding your shorter rows with 0's, but cell notation lets you store different size vectors, matrices and strings in an array.