MATLAB: Access multiple structure fields and put them in a new structure or vector

fieldmultiplestructure

I have a cell structure with below layout. In below example I acces a single field.

dataArray{1,(2)}(1,1)

Is there a way to acces multiple fields and get them into a new structure or a vector without using a for loop?

E.g. dataArray{1,(2:10)}(1,1)

I'm afraid I use the brackets in a wrong way.

No, what you are asking for is not possible. This syntax:

dataArray{1,2:10}

creates a comma-separated list of separate arrays, which cannot be further indexed into using one pair of parentheses as your example shows.

You can use parentheses (as opposed to curly braces) to return that part of the cell array:

sub = dataArray(1,2:10)

You could use that together with cellfun to return the first element of each of those cells:

out = cellfun(@(a)a(1,1),dataArray(1,2:10))

Your example concatenates horizontally because it is exactly equivalent to doing this:

[structure(1).field,structure(2).field]

which is just shorthand for

horzcat(structure(1).field,structure(2).field)

If you want to concatenate vertically, use either of these

vertcat(structure.field)
cat(1,structure.field)

For more information on how to use comma-separated lists:

You could have the following structure:

s.myfield = 10;
s.another = 20;
s.hello   = 30;

Now suppose you have a list with the fieldnames which also happens to be the function to retrieve them from a structure:

fnames = {'myfield','another','hello'};

(Note that I didn't call the list with the name of the function)

Now you can manipulate the structure using dynamic fieldname indexing:

for n = 1:numel(fnames)
    tmp = s.(fnames{n});
    % do stuff with tmp or directly with s.(fnames{n}) 
end

This is a complete reference to manipulate structures: structures