To reference the value of a field in a structure array, you
must index into the array to the structure of interest and then reference
that structure's field individually using dot notation, as in this
example:
...
y = X(1).a % Extracts the value of field a % of the first structure in array X...
To reference all the values
of a particular field for each structure in an array, use this notation
in a for loop, as in this example:
...
s.a = 0;
s.b = 0;
X = repmat(s,1,5);
for i = 1:5
X(i).a = i;
X(i).b = i+1;
end
You cannot reference fields in a structure by using dynamic
names, which express the field as a variable expression that MATLAB evaluates
at run time (see Generate Field Names from Variables).
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