finding homogineity of a portion of matrix

i have a matrix as follows:

I =

     1     1     1     1     8     1     2
     1     1     8     8     8     2     1
     1     8     8     1     2     1     1
     1     1     8     2     1     1     1
     2     2     2     1     1     1     1
     2     2     2     1     1     1     1

I need to find the homogeneity of another matrix where the value of I is 2. can anybody help me to do that in a easy way? Thanks.

[Andrew Newell]

You'll need to explain this more clearly. What do you mean by "homogeneity"?