writing values into nested cell structures.

Dear members

I am having trouble writing values into nested cell structures.

Current dataset : 30*1 cell array A, in which each individual cell contained either 3 or 5 numbers. For example, A(1,1) =[3 5 4], A(2,1) = [3 1 7 0 1] …etc.

The plan is to sequentially add up numbers in the A cell through the following steps:

step 1: adding from the first to the first (i.e., 3)

step 2: adding form the first to the second (i.e., 3+5 = 8)

step 3: adding from the first to the third (i.e., 3+5+4 =12)

step 4: place them in one single array B(1,2) = [3 8 12]

I was thinking about something like the following(forgot to post this yesterday), but kept seeing "Cell contents reference from a non-cell array object," thinking that I must have violated some rules for using nested cell structures.

for  r =1:30
     if numel(A(r))==3 %identify the number of elements as either 3 or 5
        for i= 1:3 %sum them setp by step
             B{r} = sum(A{r}(1:i)); % 
        end   
     elseif numel(A(r))==5
         for i= 1:5
             B{r} = sum(A{i}(1:i)); 
        end
     end
end

Some visual aid:

Any comments or answers whould be appreciated!

Thanks in advance

Answer 1

[Sajid Afaque]

try this might help

% example of A
A{1,1} =[3 5 4];
A{2,1} = [3 1 7 0 1] ;
A{3,1} = [3 1 7 ];
%MAIN PART IS BELOW
for i = 1 : length(A)
    current_value = A{i};
    sum = 0;
    output = [];
    for j = 1 :  numel(current_value)
        sum = sum + current_value(j);
         output = [ output sum];
    end
%store how ever you like it in B
     B{i,1} =  output;
end

[Yu Takahashi]

Thanks for the help!! much more straight forward than I imagined