# How can I make my values become positive?

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Miriã Gollmann on 16 Jun 2018
Commented: Alfonso on 17 Jun 2018
I have array values and I need to know which command I should use to make my values become positive and how can I find the mean of all array values?
Thanks.

Alfonso on 16 Jun 2018
Edited: Alfonso on 16 Jun 2018
% Example: 3x2 array
myArray = [-1,-2;-3,2;-3,-4];
% Make all values in array positive
myArray = abs(myArray);
% Mean value of array
m = mean(myArray) % m returns a row vector where each column is the mean of each column of your array
% If you want a single mean value for all values of your array
% concatenate values in a single row
array = [myArray(:,1); myArray(:,2)];
m_all = mean(array);

Miriã Gollmann on 16 Jun 2018
Thank you!
Miriã Gollmann on 17 Jun 2018
I really got it with this command. I produced two means, one of wind velocity on vector U and other of wind velocity on vector V. Now, do you know how can I put this values in a cell array?
Alfonso on 17 Jun 2018
% Save mean values in cell array
cellArray = {mean_U, mean_V};