0 个投票

Good evening,
I have encountered a problem regarding data storing from FOR loops. I'm using the following code:
[~,m]=size(obs);
for j=1:m;
[~,n]=size(obs(j).data);
for i=1:n
A=extr(eph,obs(j).data(1,i));
B(i).data=A;
end
end
% obs is a 1x2880 structure
% eph is a 36x212 matrix
% extr(eph,obs.data) is a function
% I want to store all values of B(i) in a new structure (1x2880)
The problem is that my code remembers the previous stored data and adds the new data in the current structure..How I can manage this situation?

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Geoff Hayes
Geoff Hayes 2014-9-4

0 个投票

Ciuban - you somehow need to use your j when updating B so that you don't overwrite previously stored data with the data from the current iteration. You could try creating a cell array of the structures as
[~,m]=size(obs);
% create an array for the structs
allData = cell(1,m);
for j=1:m;
[~,n]=size(obs(j).data);
% size B appropriately
B = repmat(struct('data',[]),1,n);
for i=1:n
A=extr(eph,obs(j).data(1,i));
B(i).data=A;
end
% assign B to allData
allData{j} = B;
end
At each iteration, the code "resets" B given the number of columns in the jth observation data vector. At the end of the inner for loop, we just assign B to the jth element of the allData cell array. Once completed, allData is a 1x2880 cell array of structures.

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