MATLAB: How to convert unconsistan cell array into 3d matrix

cell arraysconvertMATLABmatrix

I have cell array of daily temperature data of 18 years including leap year i.e 18*1 and each cell consist on 720*360*366/365 (normal year 365 and leap year 366).

I have found examples example 1 to cell array conversion in to matrix but these exmaples did not define unconsistance length of cells (different length).

I tried below codes but did not workd for me. Thank you in advacne for any help

 test = cell2mat(cellfun(@transpose,data,'UniformOutput',0));
 and
 test = cell2mat(permute(cellfun(@cell2mat,data,'uni',0),[720,360,18]));

Best Answer

reshape([data{:}],730,360,[])

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MATLAB: Daily 3d array to monthly- dealing with alternate days in a month and leap years – How to do it

You don't have another option than just hardcoding the number of days in a month. You can do this in a fancy way using the date functions in Matlab, or just look at a calender. The fact that you have 365 days means that you are dealing with a non-leap year, so February only has 28 days.

There are probably simpler ways to solve it, but you can easily convert this 3D matrix to a cell array, apply the function you already suggested to each cell and then convert back to a 3D matrix.

A=rand(720,360,365);%generate example array
month_lengths=[31 28 31 30 31 30 31 31 30 31 30 31];%non-leap year
B=mat2cell(A,size(A,1),size(A,2),month_lengths);%divide into 1 cell per month
B=cellfun(@(x) mean(x,3),B,'UniformOutput',false);%find mean for each month
B=cell2mat(B);%convert back to 3D array

Best Answer

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