Create new column based on values of other columns

I need to create a new variable column based on values of other variables.

I need to do this for multiple subjects (n=35). Also multiple blocks (8).

I have a matrix of trials, blocks, IV1, IV2, IV3, DV

[Ghazwan]

You need to write the code and post it here.

Answer 1

[Vinayak]

Hi Joe,

I am not sure regarding the condition on the basis of which you want to create the new column based off the other columns.

Assuming, you want to create a new column say IV7 (7th column), which is a sum of IV1, IV2 and IV3, (1st 3 columns), you can use the following code snippet.

% Load your data into a matrix called 'data'
load('data.mat')

% Create a new column based on the values of IV1, IV2, and IV3
data(:,7) = data(:,3) + data(:,4) + data(:,5);

% Save the updated matrix to a new file
save('updated_data.mat', 'data')

Thanks,

Vinayak