[R] R compare cells in one matrix

[kokavolchkov]

Good morning!

Please, could you help me with the problem?

I have a matrix *144x73.*

An example of a matrix:

        [,1]     [,2]      [,3]      [,4]     [,5]  
 [1,] 277.4 276.24 275.62 276.55 278.05
 [2,] 277.4 276.24 275.55 276.42 277.72
 [3,] 277.4 276.24 275.50 276.22 277.39
 [4,] 277.4 276.24 275.42 276.02 277.02
 [5,] 277.4 276.22 275.37 275.82 276.64

And I want to *compare*its cells like this:

a11 and a12;
a11 and a21;
a11 and a22.

then

a12 and a22;
a12 and a13;
a12 and a23.

and so on in a cycle.
*Is there a function or a package that can be used for comparation?*

Thank you!

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