How do I access sub-columns in table

I have a table which conisists of two variables with three columns each.

How do I access specific columns of this table (e.g. variable "I" column with 111 and variable "J" column with 555)

I want to keep a table with "I" and "J" as headings.

>> I= [1 2 3; 1 2 3;1 2 3];

>> J= [4 5 6;4 5 6;4 5 6];

>> K=table(I,J)

K = 3×2 table

I J

___________ ___________

1 2 3 4 5 6

1 2 3 4 5 6

1 2 3 4 5 6

Answer 1

[Star Strider]

Try this —

I = [1 2 3; 1 2 3;1 2 3];
J = [4 5 6;4 5 6;4 5 6];
K = table(I,J)

K = 3×2 table
         I              J     
    ___________    ___________

    1    2    3    4    5    6
    1    2    3    4    5    6
    1    2    3    4    5    6

VN = K.Properties.VariableNames;

I1 = table(K.I(:,1), 'VariableNames',{VN{1}})

I1 = 3×1 table
    I
    _

    1
    1
    1

J2 = table(K.J(:,2), 'VariableNames',{VN{2}})

J2 = 3×1 table
    J
    _

    5
    5
    5

The variable names for the variables do not automatically extract as they would for indexing such as ‘K(:,1)’ (and parentheses indexing must always be last) so to keep them it is necessary to create new table arrays.

.