concatenate vector within nested structures

'DATA' is a 1x1 struct containing 217 fields. Each field is a structure containing a double array labelled 'data'.

I would like to concatenate the 'data' array in each of the 217 fields into one vector.

The structure containing the dat ais attached

any help would be greatly appreciated.

Answer 1

[David Hill]

z=[];
for k=1:217
    s=sprintf('DATA.Segment%d.data',k);
    z=[z;eval(s)];
end

[Matthew Mitchell]

great! Thanks a million

[Akira Agata]

+1

The following way can avoid 'eval' function:

load("lvm2matDATA.mat");

% Extract field names containing "Segment"
list = fieldnames(DATA);
list = list(contains(list,"Segment"));

% Concatenate data
tData = [];
for kk = 1:numel(list)
  tData = [tData, DATA.(list{kk}).data];
end

% Arrange it as a table variable
tData = array2table(tData,"VariableNames",list);