How to get underlying numbers of enumeration?
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Monika Jaskolka
on 25 Feb 2020
Commented: riccardo
on 9 Nov 2020
I have a custom enumeration data type such as the one defined in the code below. How can I get the underlying integer values that comprise the type (i.e., [0,1,2])?
Simulink.defineIntEnumType('BasicColors', {'Red', 'Yellow', 'Blue'}, [0;1;2])
The getEnumTypeInfo function does not provide this information. The class metadata provides the EnumerationMemberList, but not the numerical values. Is there any other way?
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Accepted Answer
Fangjun Jiang
on 26 Feb 2020
Simulink.defineIntEnumType('BasicColors', {'Red', 'Yellow', 'Blue'}, [0;1;2]);
a=BasicColors.Blue;
a.real
6 Comments
riccardo
on 9 Nov 2020
I'm using 2020a.
Once you have an EnumTypeDefinition object in the main workspace, one of the properties is "Enumerals".
>> enumDefList = <enumTypeDefObject>.Enumerals;
will return in "enumDefList" a structure array holding Name, Value and Description of the enumerated type.
Alternatively, if you define the object in Matlab:
>>Simulink.defineIntEnumType( 'tryEnum01', { 'AA', 'BB', 'CC', 'KK' }, [0, 2 , 4, 6] )
using enumeration you extract the arrays of enumerated definitions and labels :
>> [ gg, hh ] = enumeration( 'tryEnum01' );
scalar-expanding the enumerated definitions "gg" within a cast to double:
>> indexes = double( gg(:) )
indexes =
0
2
4
6
<<
If you want just the numerical values, then
>> indexes = double( enumeration( 'tryEnum01' ) )
indexes =
0
2
4
6
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