我有一个2列的数据框.我已经使用order()函数订购了它们
data<-data[order(data$Mortality),]
head(data)
Hospital.Name Mortality
FORT DUNCAN MEDICAL CENTER 8.1
TOMBALL REGIONAL MEDICAL CENTER 8.5
DETAR HOSPITAL NAVARRO 8.7
CYPRESS FAIRBANKS MEDICAL CENTER 8.7
MISSION REGIONAL MEDICAL CENTER 8.8
METHODIST HOSPITAL,THE 8.8
第3和第4位是关系(Mortality两者均为8.7).我希望按字母顺序打破领带,以便data$Hospital.Name"CYPRESS FAIRBANKS"排在第3位,"DETAR HOSPITAL"排在第4位.