MATLAB Programming Fundamentals - MathWorks

Access Elements of a Nonscalar Struct Array

This example shows how to access and process data from multiple elements of a

nonscalar structure array:

Create a 1-by-3 structure s with field f:

s(1).f = 1;

s(2).f = 'two';

s(3).f = 3 * ones(3);

Although each structure in the array must have the same number of fields and the same

field names, the contents of the fields can be different types and sizes. When you refer to

field f for multiple elements of the structure array, such as

s(1:3).f

or

s.f

MATLAB returns the data from the elements in a comma-separated list, which displays as

follows:

ans =

1

ans =

two

ans =

3 3 3

3 3 3

3 3 3

You cannot assign the list to a single variable with the syntax v = s.f because the fields

can contain different types of data. However, you can assign the list items to the same

number of variables, such as

[v1, v2, v3] = s.f;

or assign to elements of a cell array, such as

c = {s.f};

11 Structures