Substract all elements from one vector minus all elements from other vector

Question

Alejandro Sanz 2021-5-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/837433-substract-all-elements-from-one-vector-minus-all-elements-from-other-vector

回答： Bandar 2021-5-24

Hi, I have two vectors of dates. One vector has 3 dates, for example 14/08/2020 16:32, 15/08/2020 19:26, 18/08/2020 16:28 and other vector has 6 dates. I want to see which dates of those two vectors have the condition that the difference between dates of vector 1 - date of vector 2 is 2 minutes or less.

The 2 vectors have different number of dates, and I want to substract all the dates and only remain with the dates which differ in less than 2 minutes.

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Answer 1

Bandar 2021-5-24

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/837433-substract-all-elements-from-one-vector-minus-all-elements-from-other-vector#answer_707865

在 MATLAB Online 中打开

t1 = datetime(2013,11,5,23,2,0);
t2 = datetime(2013,10,5,23,3,0);
t3 = datetime(2013,10,5,23,1,0);
vec1 = [t1 t2 t3];
t4 = datetime(2014,11,5,23,0,0);
t5 = datetime(2013,10,5,23,1,0);
t6 = datetime(2003,10,5,23,1,0);
t7 = datetime(2013,11,5,23,0,0);
t8 = datetime(2013,10,5,23,1,0);
t9 = datetime(2013,10,5,23,1,0);
vec2=[t3 t4 t5 t6 t7 t8 t9];
for i = 1:numel(vec1)
    for j=1:numel(vec2)
        t = vec1(i) - vec2(j);
        [h,m,s] = hms(t);
        if (h == 0) && (m <= 2)
            vec1(i)
            vec2(j)
            h 
            m
        end
    end
end