Any simple way to change a struct with fields of length "n" to a st... (2024)

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MyStruct = struct('Time', [1 4 6 8 9], 'field2', [5 6 7 8 9], 'field3', [23 423 2 4 7]);

YourStruct = struct('Time', [3 7], 'fieldX', [5 6]);

allstructs = {MyStruct, YourStruct}; %store structures in a cell array so we can iterate over them.

reshapedstructs = cell(size(allstructs));

timings = cell(size(allstructs));

%transform each struct from a struct of arrays into an array of structs of scalars

for sidx = 1:numel(allstructs)

fn = fieldnames(allstructs{sidx});

svalues = cell2mat(struct2cell(allstructs{sidx}));

reshapedstruct = cell2struct(num2cell(svalues), fn, 1); %the vertcat will fail if fields of the struct have different size

reshapedstructs{sidx} = num2cell(reshapedstruct'); %split the array of structs into a row cell array of scalar struct

timings{sidx} = allstructs{sidx}.Time;

end

%flatten the cell arrays and reorder by timing

reshapedstructs = [reshapedstructs{:}];

timings = [timings{:}];

[~, order] = sort(timings);

reshapedstructs = reshapedstructs(order);

celldisp(reshapedstructs)

allstructs = {MyStruct, YourStruct};

reshapedstructs = cellfun(@(s) num2cell(cell2struct(num2cell(cell2mat(struct2cell(s))), ...

fieldnames(s), 1)'), allstructs, ...

'UniformOutput', false);

timings = cellfun(@(s) s.Time, allstructs, 'UniformOutput', false);

reshapedstructs = [reshapedstructs{:}];

timings = [timings{:}];

[~, order] = sort(timings);

reshapedstructs = reshapedstructs(order);

celldisp(reshapedstructs)

A.time = [1 4 6 8 9];

A.field2 = [5 6 7 8 9];

A.field3 = [23 423 2 4 7];

B.time = [3 7];

B.fieldX = [5 6];

t = unique([A.time, B.time]);

[tf1,loc1] = ismember(A.time, t);

[tf2,loc2] = ismember(B.time, t);

flds = unique([fieldnames(A); fieldnames(B)]);

data = nan(length(flds), length(t));

for ii = 1:length(flds)

if isfield(A, flds{ii})

data(ii,loc1) = A.(flds{ii});

end

if isfield(B, flds{ii})

data(ii,loc2) = B.(flds{ii});

end

end

data = num2cell(data);

C = cell2struct(data, flds, 1);

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