Removing all elements from a struct field

I have a struct

>> aap.acq_details.sessions

ans =

1×13 struct array with fields:

name

I want to simply make this "name" field empty, ie. remove/reset all elements in this specific field.

[Tamer Gezici]

Someone answered (but now that's deleted for some reason) by saying I should do it like this:

for i=1:numel(aap.acq_details.sessions)

aap.acq_details.sessions(i).name =[];

end

However, this doesn't remove the field. It just sets it to empty array. I want to empty this struct, and put my own values. So I need it completely deleted, blank. It should not even have empty array in it.

[Stephen23]

"So I need it completely deleted, blank. It should not even have empty array in it."

MATLAB does not have a "blank". The default for unallocated cells and fields is an empty array.

C{2} = pi;
C{1}

ans =

     []

S(2).F = pi;
S(1).F

ans =

     []

Answer 1

[Paul]

Does rmfield meet the need?

% create a struct for example
for ii=1:13
aap.acq_details.sessions(ii).name = ii;
end
aap.acq_details.sessions

ans = 1×13 struct array with fields:
    name

aap.acq_details.sessions = rmfield(aap.acq_details.sessions,'name');
aap.acq_details.sessions

ans = 1×13 struct array with no fields.

[Tamer Gezici]

Yes, kind of. I already used rmfield but now the issue is, I need to create that field called "name" again. So I don't want to completely remove the field, but just clean it, purge it whaatever. And it needs to be empty so I can add new values on my own to the end of that array (append them). How can I do that?

[Paul]

Then do what you did in the comment to the question. Once name is empty, you can do whatever you want with name.

Answer 2

[Matt J]

[aap.acq_details.sessions.name]=deal([])