Parametrized Data Frame Objects

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DESCRIPTION:

Parametrized frames ("pframe" objects) inherit from data frames.

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GENERATION:

These objects are generated by the pframe function.

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STRUCTURE:

In addition to the attributes of data frames:

parameters:

the parameter objects as a list. The list must be named, and the names must be unique.

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DETAILS:

The essential difference between pframe.objects and data frames is that they contain special parameters which are just a list of arbitrary named objects, kept separate from the variables in the data frame specifically so they will not be subject to the constraints that all variables apply to the same set of observations. When a pframe is attached to the search list, the constraint is dropped and the parameters become accessible by name, just as the variables are.

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SEE ALSO:

data.frame.object , data.frame , ms , nls .