moments2: Class for summary statistic matrix of second moments.
Description
Objects of this class are a matrix of second moments between a set of
variables to be used in regression analyses.
Usage
is.moments2(object)
Arguments
object
an object to test.
Details
An object of class moments2 is square matrix, with an attribute
vscale set to NULL or 1 depending on whether the
moments are unweighted (for normal linear model analyses) or weighted
(for GLS approximation of generalised linear model analysis).