If understood correctly, this is what you are trying to achieve, e.g.:
% Initialize a matrix with two columns of data (Morning and Noon):
Morning = [8; 9; 7; 6; 5];
Noon = [15; 18; 20; 22; 13];
M = [Morning, Noon];
% Function Handle to compute the average dynamically:
Average_Computer = @(M) mean(M, 2);
% Display the initial matrix
disp('Initial Version of the Matrix: ');
disp(M);
% Plot the initial matrix
figure;
h(1) = plot(M(:, 1), 'ro-', 'DisplayName', 'Morning');
hold on;
h(2) = plot(M(:, 2), 'bd-', 'DisplayName', 'Noon');
% Initialize the averaged value is the same as Morning data:
h(3) = plot(M(:, 1), 'kp-.','DisplayName', 'Averaged Data');
legend('show');
title('Morning and Noon Values with Average Values Computed Dynamically');
% Loop based Simulation of dynamic changes :)
for i = 1:5
% Simulate changing values in the first two columns using randi():
M(:, 1) = randi([5, 10], size(M, 1), 1);
M(:, 2) = randi([15, 25], size(M, 1), 1);
% Update the average column:
M(:, 3) = Average_Computer(M);
%Updating the above created plot:
set(h(1), 'YData', M(:, 1));
set(h(2), 'YData', M(:, 2));
set(h(3), 'YData', M(:, 3));
drawnow;
% Pause to see the changes:
pause(1);
end
