User`s guide

Representing Data in the GUI
1 Type the following command in the MATLAB Command Window to open
the GUI:
ident
2 In the System Identification Tool window, select Import data > Freq.
domain data. This a ction opens the Import Data dialog box.
3 Specify the following options:
• Input — E nter the MATLAB variable name (column vector or matrix)
or a MATLAB expression that represents the input data. The expression
must evaluate to a column vector or matrix.
• Output — Enter the MATLAB variable name (column vector or
matrix) or a MATLAB expression that represents the output data. The
expression must evaluate to a column v ector or matrix.
• Frequency — E nter the MATLAB variable name of a vector or a
MATLAB expression that represents the frequency. The expression
must evaluate to a column vector.
The frequency vector must have the same number of rows as the input
and output signals.
• Data name — Enter the name of the data set, which a ppears in
the S ystem Identi fication Too l window afte r the import operation i s
completed.
• Frequency unit —Enter
Hz for Hertz or keep the rad/s default value.
• Sampling interval — Enter the actual sampling interval in the
experiment. For continuous-time data, enter
0. For more information
about this setting, see “Specifying t he Data Sampling Interval” on page
1-28.
4 (Optional) In the Data Inform ation area, click More to expand the d ialog
box and enter the following optional settings:
Input Properties
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