CODEWITHSUNDEEP
matlabdata-structures
gmeroni
gmeroni

Reputation: 571

From struct to array

Let's say I have this structure:

Results(i,j).fo
Results(i,j).co

where i=19 and j=30. How can I save in a ixj matrix all Results(i,j).fo? Or even better, How can I say to bootci to read only Results(i,j).fo 

Media_tot = mean(Matrix,2)
ci = bootci(1000, @mean, Matrix');
ci = abs(ci' - repmat(Media_tot,1,2));
hE   = errorbar(xdata_m, ydata_m, ci(:,1), ci(:,2));

Upvotes: 2

Views: 72

Answers (2)

mbschenkel
mbschenkel

Reputation: 1905

Given an array of equivalent structures, e.g.

Results = [ struct('fo',1, 'co',2) struct('fo',10, 'co',20); struct('fo',100, 'co',200) struct('fo',1000, 'co',2000) ]

You can access all 'fo` using the square brackets

all_fo = [Results.fo]
% >> [1 100 10 1000]

However, they are then in a 1D-array, to get them in the original format, use

all_fo = reshape([Results.fo], size(Results))
% >> [1 10; 100 1000]

Upvotes: 1

Dan
Dan

Reputation: 45752

I think this should work for your first question:

reshape([Results.fo], 19, 30)

e.g.

%// Make a 3x3 matrix of structs with 2 fields
A = [];
for k = 1:9
    A(k).x = k;
    A(k).y = 9-k;
end
A= reshape(A,3,3)

Now

reshape([A.x], 3,3)

ans =

   1   4   7
   2   5   8
   3   6   9

and

reshape([A.y], 3,3)

ans =

   8   5   2
   7   4   1
   6   3   0

Upvotes: 1

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