How to run a function over a specified set of variables in a table?

Hi all,

I have a 21x288 table (attached).

I have a function that compares the variables and calculates the interclass correlation coefficient. I would like to have a code that will run the function over the following set of columns:

1 vs 2

1 vs 3

1 vs 4

5 vs 6

5 vs 7

5 vs 8

9 vs 10

9 vs 11

9 vs 12

and so on until the end of the table

I could do it by creating a seperate matrix from the specified variables in the table and running the function over it. Would there be a more efficient way to do this?

1vs2 = data(:,1:2);
[r] = ICC(1vs2);

Answer 1

[Matt J]

The more efficient way would be to write ICC to support two multi-column inputs. Then, process the data in 3 subsets, as below:

data1=data(:,1:4:end);
r=cell(1,3)
for i=1:3
    
    data2 = data(:,i+1:4:end);
    r{i} = ICC(data1,data2);
    
end