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How to sum frequency of the duplicate value in an array?

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tedy
tedy 2013-4-7
Hello,
i have two array g=[1,3,2,2,5,4,4] and h=[2,4,5,2,7,5,3]. g is the value and h is the frequency. what i wanna do is the duplicate value only have one value and also the frequency of the duplicate value will be summed. it's like g=[1,3,2,5,4] and h=[2,4,7,7,8]. i try this code to delete the duplicate
i = g([diff(g)~=0, true]);
but, i don't know how to sum the frequency of the duplicate value? please help me.
Thanks in advance

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-4-7
编辑：Azzi Abdelmalek 2013-4-7
[a,b]=unique(g)
new_g=g(sort(b))
new_h=arrayfun(@(x) sum(h(g==x)),new_g)

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