MATLAB: Calc of mean and standard deviation

Question

Hi. I have

A = [1,-1,0,6,8,9] 
B = [1,-2,0,-6,8,9] 
C = [-2,-1,0,6,8,9]

How can I calc the mean of three of them (excluding NaN) std and plot them in one graph?

The result should look like the photo. Maybe this is elementary question but I'm still learning. Thanks.

Answer 1

Is this what you want:

A = [1,-1,0,6,8,9] 
B = [1,-2,0,-6,8,9] 
C = [-2,-1,0,6,8,9]
% Compute mean and std dev.
meanVec = mean([A; B; C], 'omitnan')
stdVec = std([A; B; C], 'omitnan')
% Plot everything
plot(A, 'r.-', 'LineWidth', 2, 'MarkerSize', 10);
hold on;
plot(B, 'g.-', 'LineWidth', 2, 'MarkerSize', 10);
plot(C, 'b.-', 'LineWidth', 2, 'MarkerSize', 10);
plot(meanVec, 'k.-', 'LineWidth', 2, 'MarkerSize', 10);
grid on;
legend('A', 'B', 'C', 'Mean', 'Location', 'northwest');