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Vectorizing Table in Structure without Loop

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Gabor
Gabor on 26 Apr 2021
Commented: Gabor on 27 Apr 2021
Hi,
I created this short code to explain my question:
for i=1:10
dynamic_field_name=string(cell_w_strings(i, 1)); %%% for eg.: "T1", "T2"
Table=Structure.(dynamic_field_name); %%% for eg.: Structure.T1 is a table
Date_v=Table.Date_column;
or in other words
Date_v{i}=Structure.T1.Date_column;
...
Date_v{i}=Structure.T2.Date_column;
end
I would like to vectorize this with no loop, something like with structfun cellfun or however it is possible:
Date_v{1}=Structure.T1.Date_column;
Date_v{2}=Structure.T2.Date_column;
...
Date_v{:}=Structure.(dynamic_structure_name(:)).Date_columns;
or
Date_v{:}=Structure.Cell{:}.Date_columns;
I understand that this might not be possible with dynamic field names in structure
But since I can change the dynamic field to a cell array than that is not the main point I am trying to ask.
The main question is how I can iterate through the tables in all structure fields to get the Date columns out and use them as vectors in an array
I just completely want to get wred of looping and create nice and sound vectorized script.
Thank you so much!

Accepted Answer

Mohammad Sami
Mohammad Sami on 27 Apr 2021
Edited: Mohammad Sami on 27 Apr 2021
Are the Tables T1, T2, Tn compatible with each other, meaning they have the same column definitions.
Are the only data in the structure is T1, T2.. Tn.
If that is the case you can try doing this.
temp = struct2cell(s);
tall = vertcat(temp{:}); %concatenate all the tables.
If not then we need to do some extra processing.
temp = struct2cell(s);
temp = temp(cellfun(@istable,temp));
% assuming all table have Date_column
dts = cellfun(@(x)x.Date_column,temp,'UniformOutput',false);
dtsall = vertcat(dts{:});

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