vector confusion
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I have a vector A whose values are indices for vector P.
Say A = 2 occurs 10 times.
If I do:
P(A) = P(A) + 1
P(2) = 1 % not 10
I believe I understand why this is happening. Is there a solution without going into FOR loops? A could be quite large.
2 个评论
the cyclist
2011-9-22
I do not understand what you mean by "A = 2 occurs 10 times". Can you write out code for what you mean?
Leor Greenberger
2011-9-22
采纳的回答
Walter Roberson
2011-9-22
Especially if you are starting with an all-zero array, use
P = accumarray(A(:),1);
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2011-9-22
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