Combining two arrays by pointwise repeating the elements of A(i), B(i) times.
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I want to combine two vectors (A and B) with the same length into a new vector (C) with length sum of B.
e.g.
A = [1,2,3,4]; B = [2,1,2,3];
C = [1,1,2,3,3,4,4,4]
Thus repeating the elements of A, B times.
回答（2 个）
Pierre Benoit
2014-10-9
0 个投票
You can use this function from the FEX : http://www.mathworks.com/matlabcentral/fileexchange/6436-rude-a-pedestrian-run-length-decoder-encoder/content/rude.m
idx(cumsum([1,B]))=ones(length(A)+1,1);
C=A(cumsum(idx(1:end-1)))
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