# 导入数据，预处理 #定义变量 work_space="" file_path_d1="" file_path_d1="" file_path_d1="" file_path_d1="" d1=read.csv(file_path_d1,header = FALSE) d2=read.csv(file_path_d2,header = FALSE) d3=read.csv(file_path_d3,header = FALSE) d4=read.csv(file_path_d4,header = FALSE)
