# view

Plot state contributions when using balanced truncation of normalized coprime factors method

*Since R2023b*

## Description

Use `view`

to graphically analyze the model and select a model
order reduction criteria from a model order reduction task created using `reducespec`

. For
`NCFBalancedTruncation`

objects, you can visualize the state contributions
of the normalized coprime factorization of the full-order model as either Hankel singular
values or normalized state energies. For the full workflow, see Task-Based Model Order Reduction Workflow.

`view(`

plots the default plot type for the
model order reduction algorithm of `R`

)`R`

. For balanced truncation
methods, this syntax plots Hankel singular values and associated error bounds.

`view(___,Axes=AX)`

plots on the `Axes`

object in the current figure with the handle `AX`

. Use this input
argument after any of the input argument combinations in the previous syntaxes. For more
information about customizing axes, see ```
Axes
Properties
```

.

`view(___,`

specifies
additional options for customizing the appearance of Hankel singular value plots. For
example, `Name=Value`

)`view(R,"sigma",Axes=AX,YScale="Linear")`

plots the Hankel
singular values into the axes with handle `AX`

using a linear scale for
*y* axis.

`view(`

returns help specific to the
model order specification object `R`

,"-help")`R`

. The returned help shows plot
types and syntaxes applicable to `R`

.

## Examples

## Input Arguments

## Output Arguments

## Version History

**Introduced in R2023b**

## See Also

### Functions

`reducespec`

|`process`

|`getrom (ncf)`

|`view (balanced)`

|`getrom (balanced)`

|`view (modal)`

|`getrom (modal)`