When to Use the GUI Versus the Command Line

After installing the System Identification Toolbox product, you can start the System Identification Tool GUI or work at the command line.

You can work either in the GUI or at the command line to preprocess data, and estimate, validate, and compare models.

The following operations are available only at the command line:

• Generating input and output data (see idinput).

• Estimating coefficients of linear and nonlinear ordinary differential or difference equations (grey-box models).

• Using recursive online estimation methods. See topics about estimating linear models recursively in the System Identification Toolbox User's Guide.

• Converting between continuous-time and discrete-time models (see c2d and d2c reference pages).

• Converting models to Control System Toolbox LTI objects (see the ss, tf, and zpk reference pages).

  Note   Conversions to LTI objects require the Control System Toolbox software.

New users should start by using the GUI to become familiar with the product. To open the GUI, select Start > Toolboxes > System Identification > System Identification Tool from the MATLAB desktop. Alternatively, type ident in the MATLAB Command Window.

To work at the command line, type the commands directly in the MATLAB Command Window. For more information about supported commands, see the reference pages.

Using This Product

System Identification Workflow

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