Checking for multiple values that are the same in a vector
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I have a vector of data values and would like to flag up if there are several identical values in a row.
If the data were A=[1,2,3,4,4,4,4,5,6,7,8] I would want it to flag up that there were 4 fours so that I could correct the values.
Is there a way of doing this other than a for loop with checking if A(2)==A(1)
Ideally it would only flag up an error if more than 10 were the same in a row (my real data is a lot larger than A).
Thanks
2 个评论
madhan ravi
2019-7-10
Explicitly show how your result should look like.
elspeth storey
2019-7-10
采纳的回答
Andrei Bobrov
2019-7-10
C = C(:);
d = [1;diff(C) ~= 0];
ii = cumsum(d);
counts = accumarray(ii,1);
k = find(counts >= 10);
lo = ismember(ii,k);
n = sum(lo);
C(lo) = randi([1 3],n,1);
更多回答（1 个）
KSSV
2019-7-10
B=[1,2,3,4,4,4,4,5,6,7,8] ;
[a,b]=hist(B,unique(B)) ;
[b' a']
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