How to construct this matrix without loop?

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Ming
Ming 2013-10-28
编辑： Matt J 2013-10-28
Hi, everyone:
suppose I have a vector x=[a b c d e f g h ... z]. Is it possible to construct a matrix such that:
X=[a b c d; b c d e; c d e f; d e f g; e f g h; ... w x y z];
without for-loop?
many thanks

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采纳的回答

Matt J
Matt J 2013-10-28
编辑：Matt J 2013-10-28
X = x(bsxfun(@plus,(0:22).',(1:4)))

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Azzi Abdelmalek
Azzi Abdelmalek 2013-10-28
编辑：Azzi Abdelmalek 2013-10-28
Example
x=[2 4 8 12 13 19 20 25]
out=cell2mat(arrayfun(@(ii) x(ii:ii+3),(1:numel(x)-3)','un',0))

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