数据框
# 数据框 --------------------------------------------------------------------- patientID = c(1,2,3,4) age = c(25,34,28,52) diabetes <- c('Type1','Type2','Type1','Type2') status <- c('Poor','Improved','Excellent','Poor') patientdata <- data.frame(patientID,age,diabetes,status) View(patientdata) view(age) print(patentID) str(patentID)