Trying to use Array Calculations

Hello!

I am trying to do calculations from data import from a .csv file. I mport the code and filter it to make an array with the data that is necessary for my calculations. I am trying to take each column and square each row of the column and then I would like to store the solution in a new column next to the input. If I am unclear I apologize. My goal is to take Ank_Pow1, Ank_pow2, and Ank_Pow_Gen; then square each cell and store the found value in the cell next to input.

I was trying to use T.TestAvg = mean(T{:,2:end},2) as my example but I do not understand the ,2 past the { }. If someone could explain please and also the example does row calulations and not column. If you could please help, I would greatly appreciate it. Thank you and have a pleasant day.

This is the code I have so far.

tbl_unfiltered = readtable([pathname filename], 'ReadVariableNames', 1);
tbl_all_variables = tbl_unfiltered (1:36,[4 5 6 8]);

tbl_Control = tbl_unfiltered(18:36,4:6);
tbl_COPD = tbl_unfiltered(1:16,4:6);

tbl_Cont_speed = tbl_unfiltered(18:36,8);
tbl_COPD_speed = tbl_unfiltered(1:16,8);

Control_array = table2array(tbl_Control);
COPD_array = table2array(tbl_COPD);

Control_sum = sum(Control_array);
COPD_sum = sum(COPD_array);

and this is a sample of my input data.

[Mohammad Sami]

For squaring the elements use .^2

t.var1_2 = t.var1.^2;

For reorderign the columns

t = t(:,[4 3 2 1]); % change the col orders. 4th column comes first.