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Center of repeatative/duplicate values in Matlab

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Koustubh Shirke
Koustubh Shirke 2020-3-14
关闭： MATLAB Answer Bot 2021-8-20
Hi,
I have a vector lik A = [1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 3 3 ]. I want to get index of centre and its value fo this vector. How can i do that In matlab scirpt ?
The solution of above problem should be.
values = [1 2 3];
Centre_Index = [3 8 14 ];
Thanks in adavnce .

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回答（2 个）

Ameer Hamza
Ameer Hamza 2020-3-14
x = [1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 3 3 ];
indexes = [1 find(x(2:end) - x(1:end-1))+1 numel(x)];
indexes = floor(movmean(indexes, 2, 'Endpoints', 'discard'));
dpb
dpb 2020-3-14
编辑：dpb 2020-3-14
val=unique(A);
iC=arrayfun(@(x) median(find(A==x)),val);
for your A above
>> val=unique(A);
>> iC=arrayfun(@(x) median(find(A==x)),val)
iC =
3 8 14
>>

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