Arrays of LTI Models (Creating and Manipulating Models)

Creating and Manipulating Models

Extracting LTI Arrays of Subsystems

To select a particular subset of I/O channels from all the models in an LTI array, use the syntax described in "Extracting and Modifying Subsystems" on page 3-5. For example,

sys = rss(4,3,2,5,2);
A = sys(1, [1 2])

or equivalently,

```
A = sys(1,[1 2],:,:)
```

selects the first two input channels, and the first output channel in each model of the LTI array A, and returns the resulting 5-by-2 array of one-output, two-input subsystems.

You can also combine model selection with I/O selection within an LTI array. For example, to access both:

The state-space model in the (3,2) array position

Only the portion of that model relating the second input to the first output

type

```
sys(1,2,3,2)
```

To access the subsystem from all inputs to the first two output channels of this same array entry, type

```
sys(1:2,:,3,2)
```

Accessing Particular Models in an LTI Array Reassigning Parts of an LTI Array