How can i calculate the distance to all data points?
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I basically want to start at one data point and then calculate the distance to all the other points. Then i want to select the nearest 15. Im not really sure where to start if i'm honest. If someone can point me in the right direction it would be much appreciated
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Thomas
2012-10-8
If you have the statistics toolbox this might help
There is also a file exchange contribution which might help
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Azzi Abdelmalek
2012-10-8
f1=@(x,y,x0,y0) sqrt((x-x0).^2+(y-y0).^2)
%how to call f1
x=1:100 % example
y=randi(100,1,100)
x0=x(4); y0=y(4) % start point
dist=f1(x,y,x0,y0)
[out,idx]=sort(dist)
res=out(2:16) % 15 first distances
res_idx=idx(2:16) % corresponding index
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