Nothing

```
######################################################################
#
# BayesH.R
#
# copyright (c) 2016-2016, Renato Rodrigues Silva
# last modified Mar, 2016
# first written Jan, 2016
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License,
# version 3, as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose. See the GNU
# General Public License, version 3, for more details.
#
# A copy of the GNU General Public License, version 3, is available
# at http://www.r-project.org/Licenses/GPL-3
#
# Part of the BayesH package
# Contains: get.scale.bayesH
#
######################################################################
########################################################################
#Function
########################################################################
get.scale.bayesH = function(nu0, R2 = 0.5, X, y, type = "bayesH")
{
#Missing arguments
if(missing(y)){
stop("You must to provide a response variable")
}
if(missing(X)){
stop("You must to provide an incidence matrix")
}
#Checking errors
if(!is.matrix(X) ){
stop("X must be a matrix")
}
if(any(is.na(X))){
stop("NA's are not allowed in the incidence matrix")
}
if(!is.vector(y) ){
stop("y must be a vector")
}
if(missing(nu0) ){
stop("You must to provide the value of nu0")
}
if(any(c(nu0) < 0)){
stop("All elements of the nu0 must be greater than zero")
}
if(R2 > 1 || R2 < 0 ){
stop("r squared must be between zero and one")
}
if(type=="ridge"){
if(length(nu0) != 2){
stop("The length of nu0 must be two")
}
s0 = c(NA, NA)
s0[2] = ( (nu0[2] + 2) / nu0[2] ) * (1 - R2) * var(y, na.rm = TRUE)
xx = apply(X, 2, function(x){ sum(x^2, na.rm = TRUE) })
s0[1] = (1 / mean(xx) ) * R2 * var(y, na.rm = TRUE) * ( (nu0[1] + 2) / nu0[1])
} else if(type == "bayesH"){
if(length(nu0) != 3){
stop("The length of nu0 must be three")
}
s0 = c(NA, NA, NA)
s0[3] = ( (nu0[3] + 2) / nu0[3] ) * (1 - R2) * var(y, na.rm = TRUE)
xx = apply(X, 2, function(x){ sum(x^2, na.rm = TRUE) })
s0[1] = (1 / sum(xx) ) * R2 * var(y, na.rm = TRUE) * ( (nu0[1] + 2) / nu0[1])
s0[2] = (1 / sum(xx) ) * R2 * var(y, na.rm = TRUE) * ( (nu0[2] + 2) / nu0[2])
} else {
stop("Error")
}
return(s0)
}
```

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