getxact {npsm}

Design Function for Robust Analysis of Covariance

Description

Returns the hetrogeneous slopes design matrix used in ANCOVA. It refereences the first level.

Usage

getxact(amat,bmat)

Arguments

amat

cell mean design matrix of factor.

bmat

matrix of covariates.

Details

Returns the heterogeneous slopes analysis of covariance matrix.

Value

cmat

heterogeneous slopes analysis of covariance matrix

References

Kloke, J. and McKean, J.W. (2014), Nonparametric statistcal methods using R, Boca Raton, FL: Chapman-Hall.