Response Computation and Visualization

Analyze model response on time- and frequency-response plots

Functions

sim Simulate response of identified model

`bode`	Bode plot of frequency response, or magnitude and phase data
`bodeplot`	Plot Bode frequency response with additional plot customization options
`bodemag`	Magnitude-only Bode plot of frequency response
`step`	Step response plot of dynamic system; step response data
`stepplot`	Plot step response and return plot handle
`stepinfo`	Rise time, settling time, and other step-response characteristics
`nyquist`	Nyquist plot of frequency response
`nyquistplot`	Nyquist plot with additional plot customization options
`impulse`	Impulse response plot of dynamic system; impulse response data
`impulseplot`	Plot impulse response and return plot handle
`pzmap`	Pole-zero plot of dynamic system
`pzplot`	Pole-zero plot of dynamic system model with plot customization options
`iopzmap`	Plot pole-zero map for I/O pairs of model
`iopzplot`	Plot pole-zero map for I/O pairs and return plot handle
`spectrum`	Output power spectrum of time series models
`spectrumplot`	Plot disturbance spectrum of linear identified models
`lsim`	Plot simulated time response of dynamic system to arbitrary inputs; simulated response data
`lsimplot`	Simulate response of dynamic system to arbitrary inputs and return plot handle
`lsiminfo`	Compute linear response characteristics

`showConfidence`	Display confidence regions on response plots for identified models
`findstates`	Estimate initial states of model
`data2state`	Map past data to states of state-space and nonlinear ARX models

`simOptions`	Option set for `sim`
`stepDataOptions`	Options for the `step` command
`bodeoptions`	Create list of Bode plot options
`nyquistoptions`	List of Nyquist plot options
`timeoptions`	Create list of time plot options
`getoptions`	Return `@PlotOptions` handle or plot options property
`setoptions`	Set plot options for response plot
`pzoptions`	Create list of pole/zero plot options
`spectrumoptions`	Option set for `spectrumplot`
`identpref`	Set System Identification Toolbox preferences
`findstatesOptions`	Option set for `findstates`

In analysis plots of multiple-input, multiple output LTI models, there are plot tools for selecting subsystems and grouping I/O pairs.

Set axes labels and limits, fonts, grids, and other attributes of response plots.

Set plot preferences that persist from session to session.