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find observations with nonconsecutive numbers

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wesso Dadoyan
wesso Dadoyan 2017-7-8
回答： Walter Roberson 2017-7-8
A=[55; 56; 57; 58; 26; 27; 28]
I want to find the observations in A where the two consecutive observations are not equal. In this case it should be the 5th observation since 26~=58. How can I do that elegantly?

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采纳的回答

Walter Roberson
Walter Roberson 2017-7-8
find(diff(A) ~= 1) + 1

更多回答（1 个）

JESUS DAVID ARIZA ROYETH
like this:
A=[55; 56; 57; 58; 26; 27; 28];
observations=A([1; diff(A)]~=1);
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wesso Dadoyan
wesso Dadoyan 2017-7-8
these codes are giving 26 instead of 5. I don't want the value but rather the row number.

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