Index Substructures and Fields - MATLAB & Simulink (original) (raw)

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As in MATLAB®, you index substructures and fields structures in MATLAB Function blocks by using dot notation. However, for code generation from MATLAB, you must reference field values individually (see Structure Definition for Code Generation).

For example, in the Read and Write Buses with a MATLAB Function Block example, the MATLAB function uses dot notation to index fields and substructures:

function [outbus, outbus1] = fcn(inbus) %#codegen substruct.a1 = inbus.ele3.a1; substruct.a2 = int8([1 2;3 4]);

mystruct = struct('ele1',20.5,'ele2',single(100), 'ele3',substruct);

outbus = mystruct; outbus.ele3.a2 = 2*(substruct.a2);

outbus1 = inbus.ele3;

The following table shows how the code generation software resolves symbols in dot notation for indexing elements of the structures in this example:

See Also

Topics

• Create Structures in MATLAB Function Blocks
• Implement MATLAB Functions in Simulink with MATLAB Function Blocks
• Structure Definition for Code Generation