Clear Filters
Clear Filters

How to add more values to an existing structure?

90 views (last 30 days)
Dear All,
I have an existing structure A which has several fields. Each field have 100 values. Now I want to add 20 more values to each existing field for the existing structure A. I used the following code but I got 2 structures which is not what I want.
A = [A; struct(fileds, values)]
Thanks for your help.
Benson
  3 Comments
Benson Gou
Benson Gou on 10 Jun 2021
Hi, dpb,
I do not want to add a New Field to structure A. I want to add 20 more values to each existing field for the existing structure A.
Thanks.
Benson
dpb
dpb on 10 Jun 2021
Oh, ok.
Use either setfield() or the dot notation referencing the desired field. NB: you can reference fields via variables via parentheses syntax such as
S.X=randi(10,4,1); % create dummy struct
vn='X'; % variable containing field name
S.(vn)=[S.(vn); randi(23,12,1)]; % add another dozen elements
Remember you can also get the struct fieldnames programmatically so don't have to write explicit strings as above with
>> vn=fieldnames(S)
vn =
1×1 cell array
{'X'}
>>

Sign in to comment.

Accepted Answer

Max Heiken
Max Heiken on 10 Jun 2021
A.existingField = [A.existingField; newValues];

More Answers (0)

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!