How to Assign a Struct Field to a Matrix?

How can it assign field C and field D to the first and second rows of G, respectively?

A.B.C = [1 2 3];
A.B.D = [3 4 5];

Whend I do the following, I get the error „Subscripted assignment dimension mismatch.“

G(1, :) = A.B.C
G(2, :) = A.B.D

Answer 1

[dpb]

'Cuz you must have an already-existing G variable...

>> g=pi;
>> g(1,:)=A.B.C
Subscripted assignment dimension mismatch. 
>> 
>> clear g  % now ensure no previous variable exists first...
>> g(1,:)=A.B.C
g =
   1     2     3
>> g(2,:)=A.B.D
g =
   1     2     3
   3     4     5
>>

works just fine if don't have conflicting definition already in workspace. But,

>> g=pi;
>> g=[A.B.C;A.B.D]
g =
   1     2     3
   3     4     5
>>

is simpler and overwrites the previous g silently even though existed.

However, in general, this looks like a bad road to start down; soon you'll be having issues with using sequential-named fields.