plotting points in 3D using distances between them

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Ahilya Sawh
Ahilya Sawh 2018년 5월 15일
댓글: Ahilya Sawh 2018년 5월 16일
Hello, I have a matrix of distances between 10 points. i.e. distance between point 1 and all others, distance between point 2 and all others, etc. Is there a way to plot the positions of these points in a 3D graph based on the distance information? Thank you for your help!
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KSSV
KSSV 2018년 5월 16일
Yes there are multiple options to plot. What exactly you expecting? Any pictorial example? If you want to show as points you can use plot3 and scatter.
Ahilya Sawh
Ahilya Sawh 2018년 5월 16일
Hello, Thank you for your reply, either plot3 or scatter would be great, but I am at a loss of how to use the matrix of distances as the input instead of x,y,z coordinates. For example, here is a sample 5x5 matrix of the distances between 5 points:
0.0 1.1 1.2 1.3 1.4
1.1 0.0 1.2 1.3 1.3
1.2 1.2 0.0 1.1 1.1
1.3 1.3 1.1 0.0 1.0
1.4 1.3 1.1 1.0 0.0
Row 1 is the distances between point 1 and points 2, 3, 4, 5. The diagonal values are zero since each is the distance between a point and itself. Could you please advise me on how to input this into plot3 or scatter to create a 3D plot?

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