User`s guide

Subreferencing Model Objects
Subreferencing Model Objects
In this section...
“What Is S ubreferencing?” on page 3-119
“Limitation on Supported Models” on page 3-119
“Subreferencing S pecific Measured C hannels” on page 3-119
“Subreferencing M easured and Noise Models” on page 3-120
“Treating Nois e Ch a nnels as Measu red In p uts” on page 3-122
What Is Subreferencing?
You can use subreferencing to create models with subsets of inputs and
outputs from existing multivariable models. Subreferencing is also useful
when y ou want to generate model plots for only certain channels, such as
when you are exploring m ultiple-outp ut models for input channels that have
minimal effect on the output.
The toolbox supports subreferencing operations for
idarx, idg rey, idpoly,
idproc, idss,andidfrd model objects.
In addition to subreferencing the model for specific co mbinations of measured
inputs and output, you can subreference dynamic and noise models
individually.
Limitation on Supported Models
Subreferencing nonlinear models is not supported.
Subreferencing Specific Measured Channels
Use the follow ing general syntax to subreference specific input and output
channels in models:
model(outputs,inputs)
In this syntax, outpu ts and inputs specify channel indexes or channel names.
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