Response Computation and Visualization
Functions
Compute Response
sim | Simulate response of identified model |
simOptions | Option set for sim |
findstates | Estimate initial states of model |
findstatesOptions | Option set for findstates |
data2state | Map past data to states of state-space and nonlinear ARX models |
Visualize Response
bode | Bode frequency response of dynamic system |
bodeplot | Plot Bode frequency response of dynamic system |
bodemag | Magnitude-only Bode plot of frequency response |
step | Step response of dynamic system |
stepplot | Plot step response of dynamic system |
stepinfo | Rise time, settling time, and other step-response characteristics |
nyquist | Nyquist response of dynamic system |
nyquistplot | Plot Nyquist response of dynamic system |
impulse | Impulse response plot of dynamic system; impulse response data |
impulseplot | Plot impulse response of dynamic system |
pzmap | Pole-zero map of dynamic system |
pzplot | Plot pole-zero map of dynamic system |
iopzmap | Plot pole-zero map for input-output pairs of dynamic system using default options |
iopzplot | Plot pole-zero map for input-output pairs of dynamic system |
spectrum | Plot or return output power spectrum of time series model or disturbance spectrum of linear input/output model |
spectrumplot | Plot disturbance spectrum of linear identified models |
lsim | Compute time response simulation data of dynamic system to arbitrary inputs |
lsimplot | Plot simulated time response of dynamic system to arbitrary inputs |
lsiminfo | Compute linear response characteristics |
addResponse | Add dynamic system response to existing response plot (Since R2024b) |
Visualization Utilities
showConfidence | Display confidence regions on response plots for identified models |
zoomcp | Zoom Nyquist plot to region around critical point |
Visualization Options
RespConfig | Options for step or impulse responses (Since R2023a) |
bodeoptions | Plot options for bodeplot |
nyquistoptions | Create list of Nyquist plot options |
timeoptions | Create list of time plot options |
pzoptions | Options for pole-zero plots |
spectrumoptions | Option set for spectrumplot |
getoptions | Get options for idplot and
spectrumplot |
setoptions | Set options for idplot and
spectrumplot |
Toolbox Preferences
identpref | Set System Identification Toolbox preferences |
Properties
Plot Configuration
ImpulsePlot Properties | Access impulse plot properties (Since R2024b) |
LSimPlot Properties | Access simulated time response plot properties (Since R2024b) |
StepPlot Properties | Access step plot properties (Since R2024b) |
BodePlot Properties | Access Bode plot properties (Since R2024b) |
NyquistPlot Properties | Access Nyquist plot properties (Since R2024b) |
HSVPlot Properties | Access Hankel singular value plot properties (Since R2024b) |
IOPZPlot Properties | Access input-output pole-zero plot properties (Since R2024b) |
PZPlot Properties | Access pole-zero plot properties (Since R2024b) |
Topics
- Analyzing MIMO Models
In analysis plots of multiple-input, multiple output LTI models, there are plot tools for selecting subsystems and grouping I/O pairs.
- Customize Linear Analysis Plots Using Property Editor
Interactively set axes labels and limits, fonts, grids, and other attributes of response plots.
- Specify Toolbox Preferences for Linear Analysis Plots
Set linear analysis plot preferences that persist between MATLAB® sessions.
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