Average of 3d matrix

Hi All,

I have 3D matrix with dimension (61,57,273) the 273 is daily time. 39 weeks has 273 days.

I want to do a weekly average overtime to get (61,57,39).

  result = reshape(data,61,57,39,7);
  Data_mean = nanmean(result,4);

I am not sure about the reshaping. Any help would be appreciated to correct or suggest another way to do the average.

[mohamad shirgholami]

I have 3D matrix with dimension (61,57,365) the 365 is daily time. I want to do a monthly average overtime to get (61,57,12). But the number of days each month is different. I would be grateful for your help

Answer 1

[Walter Roberson]

  result = reshape(data,61,57,7,39);
  Data_mean = permute(nanmean(result,3), [1 2 4 3])  %permute gets rid of the singleton dimension that results

[Lilya]

Thank you very much!!