Accessing Property Values Using get :: LTI Models (Creating and Manipulating Models)

Creating and Manipulating Models

Accessing Property Values Using get

You access the property values of an LTI model sys with get. The syntax is

```
PropertyValue = get(sys,PropertyName)
```

where the string PropertyName is either the full property name, or any abbreviation with enough characters to identify the property uniquely. For example, typing

h = tf(100,[1 5 100],'inputname','voltage',...
                        'outputn','current',...
                        'notes','A simple circuit')
get(h,'notes')

produces

```
ans = 

    'A simple circuit'
```

To display all of the properties of an LTI model sys (and their values), use the syntax get(sys). In this example,

```
get(h)
```

produces

num: {[0 0 100]}         
           den: {[1 5 100]}         
      Variable: 's'                 
            Ts: 0                   
       ioDelay: 0                   
    InputDelay: 0                   
   OutputDelay: 0                   
     InputName: {'voltage'}         
    OutputName: {'current'}         
    InputGroup: [1x1 struct]        
   OutputGroup: [1x1 struct]        
         Notes: {'A simple circuit'}
      UserData: []

Notice that default (output) values have been assigned to any LTI properties in this list that you have not specified.

Finally, you can also access property values using direct structure-like referencing. This topic is explained in the next section.

Setting LTI Properties Direct Property Referencing Using Dot Notation