Average of specific values based on condition

Question

Filip Konecny 2017-10-18

0
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https://ww2.mathworks.cn/matlabcentral/answers/361870-average-of-specific-values-based-on-condition

回答： KSSV 2017-10-18

average.png

Hello, is it somehow to solve efficiently the following problem? I need to average only elements which are "together". See attached picture.

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Answer 1

KSSV 2017-10-18

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361870-average-of-specific-values-based-on-condition#answer_286325

在 MATLAB Online 中打开

data = [1 2 3 4 5 6 6.5 10 12 12.5 15 16 17 ;20 20 20 20 20 20 20 13 13 13 20 20 20]';
idx = find(diff(data(:,2))~=0) ;
pos = [[1 ;idx+1] [idx ; length(data)]] ;
iwant = zeros(size(pos,1),1) ;
for i = 1:size(pos,1)
    iwant(i) = mean(data(pos(i,1):pos(i,2),1)) ;
end