MATLAB: Find a series of consecutive numbers in a vector

consecutive

Hello, I have a small problem I am trying to solve on Matlab, but I am a stuck.
I have a vector containing timestamps: [34 35 36 78 79 80 81 82 84 85 86 102 103 104 105 106 107 201 202 203 204 …]
And I would like to find the timestamp which is followed by at least 5 consecutive numbers after it. So in my example, the answer would be 102, because it is the first number which is followed by 5 consecutive numbers.
I tried many things using diff(), but I cannot find a simple way to get that result.
If anyone can help, it would be greatly appreciated.
Thank you!

Best Answer

Yet another method. Let t be your timestamp row vector.
 N = 5; % Required number of consecutive numbers following a first one
 x = diff(t)==1;
 f = find([false,x]~=[x,false]);
 g = find(f(2:2:end)-f(1:2:end-1)>=N,1,'first');
 first_t = t(f(2*g-1)); % First t followed by >=N consecutive numbers
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