mean of matrix element

I have trouble with meaning of matrix

I wanted to mean adt1~adt12

mean(mmadt) didn't work because of minimum matrix

how can I mean with double type?

[Willie Smit]

What is the size of the adt12? You can get that by typing

size(adt12)

[il147]

1440*720 double

if you slide that picture, then can check other size too !

Answer 1

[Image Analyst]

mean() does not take the number of items in the second argument - that would be the dimension (direction) along which to take the mean of a matrix. Instead, try summing up and dividing.

theSum = 0;
for k = 1 : nFiles
    thisFileName = fullfile(filelist(k).folder, filelist(k).name);
    fprintf('Reading %s\n', thisFileName);
    theSum = ncread(thisFileName, 'adt')
end
adt12Mean = theSum / nFiles

[il147]

then is it mean for only adt12?

I have from adt1 to adt12 and want to all of it

Adt is montly data(to 1~12), and should mean this montly data to annual data

I apologize for not good at matlab :(

Anyway, thanks for help

mean this all

[Image Analyst]

I just used the name you did, which is not normally what I'd do. I'd do this:

theSum = 0;
for k = 1 : nFiles
    thisFileName = fullfile(filelist(k).folder, filelist(k).name);
    fprintf('Reading %s\n', thisFileName);
    theSum = ncread(thisFileName, 'adt')
end
% Compute the mean over all nFiles that we read in.
adtMean = theSum / nFiles