How to find Distance Between two points ?

Question

ankita soni 2019-12-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/498420-how-to-find-distance-between-two-points

评论： Bhaskar R 2020-1-3

Hello sir/ma'a,m

I want to find out the distance between each points in a time series in matlab. i dont know how to do it

Suppose a time series is [ 0.1, 0.1, 0.2, 0.5, 0.22], i want to find out the distance between each points. be more specific, if we take first column of this matrix(0.1), then i want to find distance between 0.1 and 0.1, 0.1 and 0.2, 0.1 and 0.5, 0.1 and 0.22.

then i want to take second column 0.1 and its distance with each column axcept first one (o.1).

then i want to take third column 0.2 and its distance with each column axcept first and second one (0.1, 0.1)

then want to take forth column 0.5 and its distance with left column axcept first, second and third one (0.1, 0.1, 0.2).

please help me with this.

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Answer 1

Bhaskar R 2019-12-30

1
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https://ww2.mathworks.cn/matlabcentral/answers/498420-how-to-find-distance-between-two-points#answer_408100

a = [ 0.1, 0.1, 0.2, 0.5, 0.22];   % your vector
dist = cell(1, length(a)-1);       % your distance cell matrix empty initialization
for ii =1:length(dist)
    dist{ii} = a(ii)-a(ii:end);    % distances from each point
end