How Can I group Matrix elelments

I have 10 by 10 matrix, were rows and columns represent machine numbers So A(i,j) represent some coherency index betwing machine i and j

A = [    0    0.0059    0.0092    0.0102    0.0103    0.0110    0.0114    0.0112    0.0110    0.0110
    0.0059         0    0.0034    0.0045    0.0049    0.0056    0.0061    0.0059    0.0059    0.0058
    0.0092    0.0034         0    0.0016    0.0025    0.0032    0.0036    0.0035    0.0037    0.0037
    0.0102    0.0045    0.0016         0    0.0011    0.0017    0.0021    0.0020    0.0023    0.0022
    0.0103    0.0049    0.0025    0.0011         0    0.0008    0.0013    0.0011    0.0013    0.0012
    0.0110    0.0056    0.0032    0.0017    0.0008         0    0.0005    0.0004    0.0007    0.0007
    0.0114    0.0061    0.0036    0.0021    0.0013    0.0005         0    0.0003    0.0007    0.0007
    0.0112    0.0059    0.0035    0.0020    0.0011    0.0004    0.0003         0    0.0004    0.0004
    0.0110    0.0059    0.0037    0.0023    0.0013    0.0007    0.0007    0.0004         0    0.0001
    0.0110    0.0058    0.0037    0.0022    0.0012    0.0007    0.0007    0.0004    0.0001         0];

I want class the machines into groups condition if A(i,j) < let say 0.01 the two machines can be grouped

How can I do that ,

Than you

Answer 1

[John BG]

you can split A into low and high values, with the given threshold of 0.01

Alow=A(A<.01)
Ahigh=A(A>=.01)

with

[rowAlow,colAlow,v]=find(A(A<.01));

in colAlow you get the positions of the A elements smaller than threshold.

Same for positions of larger elements.

[rowAhigh,colAhigh,v]=find(A(A>=.01));

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thanks in advance

John BG

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