Data Extraction

Extract numerical data including coefficients and uncertainties

You can extract coefficients and parameters from your model for further analysis. You can also compute the frequency response, including DC gain and bandwidth.

Functions

Model Data

`polydata`	Access polynomial coefficients and uncertainties of identified model
`ssdata`	Access state-space model data
`idssdata`	State-space data for identified system
`tfdata`	Access transfer function data
`zpkdata`	Access zero-pole-gain data
`frdata`	Access data for frequency response data (FRD) object
`ndims`	Query number of dimensions of dynamic system model or model array
`order`	Query model order
`pole`	Poles of dynamic system
`zero`	Zeros and gain of SISO dynamic system
`size`	Query output/input/array dimensions of input–output model and number of frequencies of FRD model

Model Parameters

`getpvec`	Obtain model parameters and associated uncertainty data
`setpvec`	Modify values of model parameters
`getcov`	Parameter covariance of identified model
`setcov`	Set parameter covariance data in identified model
`get`	Access model property values
`set`	Set or modify model properties
`nparams`	Number of identified model parameters

Model Response

`freqresp`	Evaluate system response over a grid of frequencies
`damp`	Natural frequency and damping ratio
`dcgain`	Low-frequency (DC) gain of LTI system
`bandwidth`	Frequency response bandwidth

Topics

Extracting Numerical Model Data
Extracting numerical parameter values and uncertainties from linear models.