MATLAB: Obtain SUM for a 3D matrix

3d matrixsum

Hi,

I have a precip matrix 360 x 280 x 365 and I want to obtain the sum for all the values in (:,:,365). For example,

output = sum(precip(360x280x1)+precip(360x280x2)+precip(360x280x3)..+precip(360x280x365)

So, the output matrix should be, output = 360 x 280. Can anyone suggest me a methos in MATLAB?

Thanks in advance.

 output = sum(precip,3);

I am a little confused, do you mean like this:

Y = reshape(1:18,6,3)  % A manageable dimension.
Y_1 = sum(Y,2)

So in your case it would be

Y_1 = sum(Y,2).';

Or do you mean, more like this:

Y = 1:18
Y_1 = sum(reshape(Y,3,6))

So in your case it would be

Y_1 = sum(reshape(Y,320,467))

A = rand(20,28,8) ;
m = mean(A,3) ;