Calculating mean values of a 3D matrix for every rows

I have a matrix 12x441x1440. 12 is the dimension of time. how can I get 12 average numbers for every month from that matrix

Answer 1

[Simon Chan]

Try this:

mean(yourmatrix,[2 3]);

[Joydeb Saha]

comes an error like this

Error using sum

Dimension argument must be a positive integer scalar within indexing range.

Error in mean (line 117)

y = sum(x, dim, flag)/size(x,dim);

[Simon Chan]

What is the dimension of your matrix?

Could you do size(yourmatrix)?

A = rand(12,441,1440);
size(A)

ans = 1×3

12 441 1440

B = mean(A,[2 3])

B = 12×1

0.4996 0.5005 0.4993 0.5002 0.4999 0.4999 0.5005 0.5002 0.5006 0.4996

[Bruno Luong]

Look like you have old MATLAB version

mean(mean(yourmatrix,2),3);

[Joydeb Saha]

thanks Bruno