Nothing
VE.Jk.B.Ratio <- function(VecY.s, VecX.s, VecPk.s)
{
if(! is.vector(VecY.s) ){stop("VecY.s must be a vector.") }
if(! is.vector(VecX.s) ){stop("VecX.s must be a vector.") }
if(! is.vector(VecPk.s) ){stop("VecPk.s must be a vector.") }
n <- length(VecY.s)
if(n != length(VecPk.s) ){stop("The lengths of VecY.s and VecPk.s are different.") }
if(n != length(VecX.s) ){stop("The lengths of VecY.s and VecX.s are different.") }
if(anyNA(VecPk.s) ){stop("There are missing values in VecPk.s.") }
if(min(VecPk.s)<=0|max(VecPk.s)>1 ){stop("There are invalid values in VecPk.s.") }
if(anyNA(VecY.s) ){stop("There are missing values in VecY.s.") }
if(anyNA(VecX.s) ){stop("There are missing values in VecX.s.") }
if(any(VecX.s==0) ){warning("There are zero values in the denominator variable VecX.s.") }
VecEstTheta_k <- .C("Est_Ratio_Excluding_All_Elements",
as.double(VecY.s),
as.double(VecX.s),
as.double(VecPk.s),
n,
VectVarEst = double(n),
PACKAGE = "samplingVarEst")$VectVarEst
EstTheta <- Est.Ratio(VecY.s, VecX.s, VecPk.s)
Nhat <- .C("Est_Total_NHT",
as.double(rep.int(1.0, n)),
as.double(VecPk.s),
n,
PointEst = double(1),
PACKAGE = "samplingVarEst")$PointEst
VecPseudo.s <- (1 - {1/Nhat/VecPk.s}) * (EstTheta - VecEstTheta_k)
Doublen <- as.double(n)
OUTPUT <- .C("VE_Hajek_form",
VecPseudo.s,
as.double(VecPk.s),
n,
Doublen,
VarEst = double(1),
PACKAGE = "samplingVarEst")$VarEst
if(OUTPUT<0 ){warning("The variance estimate contains negative values.") }
OUTPUT
}
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