Using the C++ Math Library

Referencing into Nested Structures

Structures can contain other structures. For example, the image structure used in these examples contains a date structure. To retrieve data from nested structures, nest calls to mwArray::field().

y = images(2).field("date").field("year");

y = images(2).date.year performs the same operation in MATLAB.

Note    You can only reference or assign to single instances of nested structures. Though you might expect this MATLAB C++ Math Library code y = images.field("date").field("year") to set y to the array of years in the date field of the images structure array, this code generates an error because the result of images.field("date") is a structure array rather than a single structure.

Referencing a Single Structure in a Structure Array

Accessing the Contents of Structures Within Cells