modify and repalce structure fields

I have a structure ALL with 42 misc fields. One of these fields is a structure E with 4 fields (A,B,C,D), each of size N. I need to modify these fields and replace structure E with a new structure E that will have approximately N/4 elements.I am having difficult indexing the ABCD fields so I can manipualte them. I can do this for instance to extract the ALL.E.C field and print it to the comand window, but nothing I try will allow me to extrract it and put it into a double array so I can manipulate it.

ALL.E(1:end).C ----> prints to command window

I tried this

struct2cell(ALL.E(1:end).C) ---> error

but it said it would not work with arguments of 'double' Can someone please suggest a way I can achieve my goal?

-Jeff

Answer 1

[Sriram Tadavarty]

Hi Jeff,

You can try indexing as such

>> ALL.E.A % ALL is a structure with field E and field E has another field A
% To replace A field with 1/4 elements
>> ALL.E.A = rand(1,N/4); % Replace with the respective elements as you need

% Peform this for other fields B,C, and D

% TO replace the complete structure
>> ALL.E = F; % F is another structure

Hope this helps.

Regards,

Sriram