User`s guide

Using Model Output Plots to Validate and Compare Mod els
Model Output Plot Settings (Continued)
Action
Command
Change between simulated output
or predicted output.
Note Prediction is only av ailable
for time-domain validation data.
• Select Options > Simulated
output or Options > k step
ahead predicted output.
• To change the prediction horizon,
select Options > Set prediction
horizon, and select the number
of samples.
• To enter your own prediction
horizon, select Options > Set
prediction horizon > Other .
Enter the value in terms of the
number of samples.
Display the actual output values
(Signal plot), or the difference
between model output and measured
output (Error plot).
Select Options > Signal plot or
Options > Error plot.
(Time-do main validation data only)
Set the time range for model output
and the time interval for which the
Best Fit value is computed.
Select Options > Customized time
span for fit and enter the minimum
and maximum time valu es. For
example:
[1 20]
(Multiple-output system only)
Select a different output.
Selecttheoutputbynameinthe
Channel menu.
Displaying the Confidence Interval
In the GUI, you can d isplay a con fidence interval on the plot to gain insight
into the quality of a linear model. To learn how to show or hide confidence
interval, see the description of the plot settings in “How to Plot Model O utput
Using the GUI” on page 8-11.
The confidence interval corresponds to the range of output values with a
specific p robability of being the actual output of the system. The toolbox uses
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