GeneralizedAsymmetricLaplace/R/scaleGAL.R

# Apply scale and location transform to the GAL distribution
# 
# Author: Francois Pelletier
#
# LGPL 3.0
###############################################################################

#' Apply scale and location transform to the GAL distribution
#' @param param Parameter vector
#' @param type Choose between "mu" or "kappa" parametrization
#' @param location Location shift (unitary)
#' @param scale Scale shift (in standard deviations)
#' @param log Logical for log-parameters
#' @return The transformed parameter vector
#' @export scaleGAL
#' @author Francois Pelletier
scaleGAL <- function(param,type="kappa",location,scale,log=FALSE)
{
	if(log)
	{
		
	}
	else
	{
		if(type=="kappa")
		{
			return(param * c(scale,scale,1,1) + c(location,0,0,0))
		}
		else if (type=="mu")
		{
			return(changetypeGAL(
					scaleGAL(changetypeGAL(param,type="mu",target="kappa"),type="kappa",location,scale),
					type="kappa",target="mu"))
		}
	}
}