Splitting 1 column array
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Hi all,
I have various column matrices with varying number of elements from 38-202. I want to split each matrix into 5 small matrices each containing the same number of elements. The distribution of numbers into each can be random. If the original matrix has more elements, some can be ignored as well. Like for example if the original matrix has 204 elements and I want to split it into 5 matrices. So only 200 elements can be shuffled and 4 need to be ignored.
Is there any function in MATLAB I can use?
Nancy
采纳的回答
Walter Roberson
2012-8-16
num_subsets = 5;
matlen = length(YourVector);
num_to_use = matlen - mod( matlen, num_subsets );
idx = randperm(matlen);
shuffled = YourVector(idx(1:num_to_use));
subsets = reshape(shuffled, [], num_subsets);
The subsets would then be the columns.
3 个评论
Azzi Abdelmalek
2012-8-16
the result is one matrix
Walter Roberson
2012-8-16
Yes, but I did indicate that the subsets would be the columns. Splitting into individual matrices is usually not a good idea in this kind of situation.
Nancy
2012-8-16
更多回答（1 个）
Azzi Abdelmalek
2012-8-15
example
A=rand(102,2);B=A(1:100,:)
result=reshape(B,5,8,5)
1 个评论
Walter Roberson
2012-8-16
Not quite, as that does not do any shuffling.
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