MATLAB: Multiplication in cell arrays

arraycellcell arraysMATLAB

Hey all, I have a cell (408*1), which has 408 rows of 33*33 array inside it. I attached this cell to this question (the name is precip(my_data).mat).

now I want to multiply a 408*1 double array to this cell. I attached this array too (the name numbers.mat).

so please help me to do multiply my file (numbers.mat) to my data (precip.mat). In the end I would like to have:

precip(my_data) * (numbers.mat) %each row multiplying to the same row from numbers

Thank you all in advance.

Best Answer

Or a simple loop.

for i=1:408
    PRECTOTCORR{i}=PRECTOTCORR{i}*result(i);
end

Related Solutions

MATLAB: How to summarize this code

You can try to create structure for the data of different years:

for i = 1:length(precips)
    precip.(['y',num2str(i+1981)]) = precips{i,1};
end

Now, if you want to access data with any specific year say 2000. You can just type:

Req_data = precip.y2000;

I hope it helps!

MATLAB: How to write a LOOP for this case

So again, numbered variables and field names are a bad idea. (see here and here) for the related questions). The whole thing would be simpler if the original cell array was used.

If the original cell array had been kept, the code over the 3 questions could be simplified to:

%using original cell array precips
precip_monthly = cell(size(precips));  %preallocate result cell array
for idx = 1:numel(precips)
    if size(precips{idx}, 3) == 365
        month_lengths=[31 28 31 30 31 30 31 31 30 31 30 31];%non-leap year
    else
        month_lengths=[31 29 31 30 31 30 31 31 30 31 30 31];%leap year
    end
    p_month =mat2cell(precips{idx}, size(precips{idx}, 1), size(precips{idx}, 2), month_lengths);%divide into 1 cell per month
    p_month = cellfun(@(x) sum(x, 3, 'omitnan'), p_month, 'UniformOutput', false); %find mean for each month !!THIS CALCULATE THE SUM!!
    precip_monthly{idx} = cell2mat(p_month);%convert back to 3D array
end

Note that you have written a comment that says find mean for each month but you use the sum function. So either the code or the comment is wrong.

Best Answer

Related Solutions

MATLAB: How to summarize this code

MATLAB: How to write a LOOP for this case

Related Question