If you've read two "similar" tables into a 2x1 cell array, best ting to do is to vertvat them outside the loop:
>> C = {array2table(rand(4,3)) array2table(rand(5,3))}
C =
1×2 cell array
{4×3 table} {5×3 table}
>> t = vertcat(C{:})
t =
9×3 table
Var1 Var2 Var3
_______ _______ _______
0.34039 0.2551 0.95929
0.58527 0.50596 0.54722
0.22381 0.69908 0.13862
0.75127 0.8909 0.14929
0.25751 0.92926 0.47329
0.84072 0.34998 0.35166
0.25428 0.1966 0.83083
0.81428 0.25108 0.58526
0.24352 0.61604 0.54972
You can vertcat incrementally inside the loop, but this is faster.
This
data_2=data_2{:,3:8}; % nx6 table
doesn't create a table, it extracts data from a table. You may not be intending to do that.
