Structures - MATLAB & Simulink (original) (raw)
Arrays with named fields that can contain data of varying types and sizes
A structure array is a data type that groups related data using data containers called fields. Each field can contain any type of data. Access data in a structure using dot notation of the formstructName.fieldName. For more information, see Structure Arrays or watch Introducing Structures and Cell Arrays.
Functions
| struct | Structure array |
|---|---|
| fieldnames | Field names of structure, or public fields of Java or Microsoft COM object |
| getfield | Field of structure array |
| isfield | Determine if input is structure array field |
| isstruct | Determine if input is structure array |
| orderfields | Order fields of structure array |
| rmfield | Remove fields from structure |
| setfield | Assign value to structure array field |
| arrayfun | Apply function to each element of array |
| structfun | Apply function to each field of scalar structure |
| table2struct | Convert table to structure array |
| struct2table | Convert structure array to table |
| cell2struct | Convert cell array to structure array |
| struct2cell | Convert structure to cell array |
Topics
- Structure Arrays
Create a structure array and store data in its fields. Access the contents by name using array indexing and dot notation. - Generate Field Names from Variables
Dynamically determine a structure field name at run time from a variable or expression. - Ways to Organize Data in Structure Arrays
Consider ease of data access and system memory constraints when determining how to organize the data in a structure array. - Memory Requirements for Structure Array
Structure arrays do not require contiguous memory, but their fields do. Instead of incrementally increasing the number of fields or number of elements in a field, preallocate memory for fields containing very large arrays.