User`s guide

Model Analysis
8
Overview of Model Validation and Plots ............. 8-2
When to Validate Models
........................... 8-2
Ways to Validate Models
........................... 8-2
Data for Validating Models
......................... 8-4
Supported Model Plots
............................. 8-4
Plotting Models in the GUI
.......................... 8-5
Getting Adv ice About Models
........................ 8-7
Using Model Output Plots to Validate and Compare
Models
......................................... 8-8
Supported Model Types
............................ 8-8
What Does a Model O utput Plot Show?
................ 8-8
Choosing Simulated or Pre dicted Output
.............. 8-9
How to Plot Model Output Using the GUI
.............. 8-11
Displaying the Confidence Interval
................... 8-13
How to Plot and Compare Model Output at the Command
Line
.......................................... 8-14
Using Residual Analysis Plots to Validate Models
..... 8-16
What Is Residual Analysis?
......................... 8-16
Supported Model Types
............................ 8-17
What Does the Residuals Plot Show?
................. 8-17
Displaying the Confidence Interval
................... 8-18
How to Plot R esiduals Using the GUI
................. 8-19
How to Plot Residuals at the Command L ine
........... 8-21
Example – Examinin g Model Residual s
............... 8-21
Using Impulse- and Step-Response Plots to Validate
Models
......................................... 8-24
Supported Models
................................. 8-24
How Transient Response Helps to Validate Models
...... 8-24
What Does a Transient Response Plot Show ?
........... 8-25
HowtoPlotImpulseandStepResponseUsingtheGUI
.. 8-26
Displaying the Confidence Interval
................... 8-29
How to Plot Impulse and Step Response at the Command
Line
.......................................... 8-30
Using Frequency-Response Plots to Validate Models
.. 8-32
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