Represent Data

Measure or generate data, import in GUI or represent using data objects, manipulate complex data

Functions

`iddata`	Input-output data and its properties for system identification in the time or frequency domain
`idfrd`	Frequency response data or model
`idinput`	Generate input signals
`sim`	Simulate response of identified model
`size`	Query output/input/array dimensions of input–output model and number of frequencies of FRD model

midprefs Specify location for file containing System Identification app startup information

simOptions Option set for sim

Iddata Sink	Export simulation data as `iddata` object to MATLAB workspace
Iddata Source	Import time-domain data stored in `iddata` object in MATLAB workspace

Import time-domain data into the System Identification app

Import frequency-domain input-output data and frequency-response data into the System Identification app.

Import iddata and idfrd data objects.

Creating input data with specific characteristics and simulating the output data from a model.

Represent time-domain, time-series, and frequency-domain data.

The toolbox provides limited support for nonuniformly sampled data.

Specify time between successive data samples.

You can get information about each data set in the System Identification app by right-clicking the corresponding data icon.

Using the iddata constructor to represent time-domain and frequency-domain data and working with iddata objects.

The iddata object stores time-domain data or frequency-domain data and has several properties that specify the time or frequency values.

Using the idfrd constructor to represent frequency-response data and working with idfrd objects.

Supported operations and limitations for handling complex data and commands for manipulating complex signals.