is.fsets: Test whether x is a valid object of the fsets class
Description
Test whether x has a valid format for the objects of the fsets class.
Usage
is.fsets(x)
Arguments
x
An object being tested.
Value
TRUE if x is a valid fsets object and FALSE otherwise.
Details
This function tests wheter x inherits from fsets and whether it is a numeric
matrix with vars and specs attributes of correct size and
column/row names.