how to store data in a matrix?

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Lilya
Lilya on 17 Jul 2019
Commented: Lilya on 17 Jul 2019
Hi all,
I want to loop over the third dimension of the 3D matrix and calculate the average then sore the resulted data in a new matrix.
For example:
U10_series = [];
for day=1:length(datenum_array); % this time is corresponding to the number of days
filename=strcat('./MERRA2_400.tavg1_2d_ocn_Nx.2019',num2str(datevec_array(day,2),'%02i'),num2str(datevec_array(day,3),'%02i'),'.SUB.nc');
%read U10
U10 = ncread(filename,'U10M');
U10_box = U10(lon_range,lat_range,:);
U10_box_mean = nanmean(U10_box,3);
U10_series = [U10_series,U10_box_mean];
end
where am I mistaken?
The help is much appreciated

Accepted Answer

KSSV
KSSV on 17 Jul 2019
U10 = ncread(filename,'U10M');
If your variable U10M is 3D, the above line reads complete data. Your U10 should be 3D. Now you can apply mean on it by specifying the dimension you want.
Also read about ncread, here you can specify the 3D dimension you want to read in a loop. If it is not clear, attach your file for further help.
  3 Comments
Lilya
Lilya on 17 Jul 2019
Thank you very much!

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