# How to calculate euclidean distance for 3 vectors using matlab

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krishnasri el 16 de Mzo. de 2015
Comentada: krishnasri el 19 de Abr. de 2015
Say suppose I have 83*3 matrix in an excel sheet and similarly I have 600 sheets with 83*3 matrix/data those vectors are x,y,z and I need to calculate distance between first and second data set/excel sheet date, second and third,third and fourth ...till 600
some one help to solve using MATLAB code
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Andrew Newell el 16 de Mzo. de 2015
Judging by your title, you actually want to find the distance between column 1 of your first sheet and column 1 of the other sheets; and ditto for columns 2 and 3. Correct?
krishnasri el 25 de Mzo. de 2015
Editada: Andrew Newell el 25 de Mzo. de 2015

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Andrew Newell el 25 de Mzo. de 2015
Editada: Andrew Newell el 15 de Abr. de 2015
You can find the Euclidean distance between two vectors v1 and v2 using norm:
distance = norm(v1-v2);
I don't know how you are importing the sheets, so let's just look at two sheets, with your initial matrix being sheet0 and the other sheets being numbered 1, 2, ...
(Edited to correct error)
sheetdiff = sheet1-sheet0;
npoints = size(sheet0,1);
distance = zeros(npoints,1);
for I = 1:npoints
distance(I) = norm(sheetdiff(I,:));
end
Now you'll have to put this inside another loop where you look at one sheet at a time.
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Andrew Newell el 18 de Abr. de 2015
Judging by the last line, you are treating sheetdiff as the answer. It isn't. The real answer is distance, which has dimensions npoints x 1.
krishnasri el 19 de Abr. de 2015
Okay thanq got it. But what for are we using distance(I) = norm(sheetdiff(I,:))?

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