how to calculate the mean in matlab

Question

I have captured data using a Shimmer for three different types of fall. A trip, weak and strong fall. I have broken these into sub plots and now I need to calculate the mean. I am new to Matlab and don't understand how to calculate the mean of each of the below:

subplot(3,1,1), plot(weak(:,2:4));
subplot(3,1,2), plot(Trip(800:1600,2:4));
subplot(3,1,3), plot(Strong(:,2:4));

Do i just need to do something like:

 subplot(3,1,1), plot mean(weak(:,2:4));

I am totally lost here, please help.

Thanks.

Answer 1

Since mean of a 2d matrix takes the mean of each column you could use

M = mean(weak)
plot(M(:,2:4))

Or if you prefer just

plot(mean(weak)(:,2:4))