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#' WtTopsis
#' Weighted TOPSIS method for multiple-criteria decision making (MCDM) us Normalized data.
#' @param data Normalized data.
#'
#' @return Data set containing D+,D- and C values
#' @export WtTopsisN
#'
#' @examples
#' \donttest{
#' sampleData<-sampleData
#' mth<-c("ZH","ZJ","QJ","ZH","FU","ZH","QJ","FU","FU","ZH")
#' zmth<-c(NA,NA,NA,NA,"CZ",NA,NA,"DS","CZ",NA)
#' xbest<-c(NA,4,NA,NA,NA,NA,NA,NA,NA,NA)
#' qup<-c(NA,NA,5,NA,NA,NA,5,NA,NA,NA)
#' qlow<-c(NA,NA,3,NA,NA,NA,3,NA,NA,NA)
#' maxdata<-data2max(sampleData,mth,zmth,xbest,qlow,qup)
#' normaldata<-DataNormal(maxdata)
#' WtTopsisN(normaldata)
#' }
WtTopsisN<-function(data){
maxdata<-data
nc<-ncol(maxdata)
nr<-nrow(maxdata)
MAXdata=NULL
MINdata=NULL
for (i in 2:nc){
MAXI<-max(maxdata[,i])
names(MAXI)<-names(maxdata)[i]
MINI<-min(maxdata[,i])
names(MINI)<-names(maxdata)[i]
MAXdata<-c(MAXdata,MAXI)
MINdata<-c(MINdata,MINI)
}
MaxData<-data.frame(MAXdata)
MaxData<-t(MaxData)
MinData<-data.frame(MINdata)
MinData<-t(MinData)
BestResult<-rbind(MaxData,MinData)
Dmax<-data.frame()
Dmax<-data.frame(maxdata[,1])
names(Dmax)[1]<-names(maxdata)[1]
Dmin<-data.frame()
Dmin<-data.frame(maxdata[,1])
names(Dmin)[1]<-names(maxdata)[1]
Wi<-GetWeight(maxdata)
for (i in 2:nc){
maxdata1<-maxdata[,c(1,i)]
maxdata1$Djia<-Wi["weight",i-1]*((maxdata[,i]-BestResult["MAXdata",i-1])**2)
maxdata2<- maxdata1[,c(1,3)]
names(maxdata2)[2]<-names(maxdata)[i]
Dmax<-merge(Dmax,maxdata2)[order(Dmax[,1]),]
mindata1<-maxdata[,c(1,i)]
mindata1$Djian<-Wi["weight",i-1]*((maxdata[,i]-BestResult["MINdata",i-1])**2)
mindata2<- mindata1[,c(1,3)]
names(mindata2)[2]<-names(maxdata)[i]
Dmin<-merge(Dmin,mindata2)[order(Dmin[,1]),]
}
Dma=NULL
Dmi=NULL
for (i in 1:nr){
Dma1<-sqrt(sum(Dmax[i,c(2:nc)]))
Dma<-c(Dma,Dma1)
Dmi1<-sqrt(sum(Dmin[i,c(2:nc)]))
Dmi<-c(Dmi,Dmi1)
}
IDM<-Dmax[,1]
Dvalue<-data.frame(IDM,Dma,Dmi)
names(Dvalue)[1]<-names(Dmax)[1]
names(Dvalue)[2]<-"Dmax"
names(Dvalue)[3]<-"Dmin"
Dvalue$Cvalue<-(Dvalue$Dmin)/((Dvalue$Dmax)+(Dvalue$Dmin))
return(Dvalue)
}
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