R语言读写excel表格
读文件常用的几种方法：
1. library(readxl)
data <- read_excel("name.xlsx",sheet=1,col_names = T,col_types = NULL ,na="", skip=0)
2. data <- read.table("name.txt",header = T,sep = "")
3. read.csv(file.choose(),header = F,sep = ",")#逗号可删除
data <-data.frame(data$a,data$b)#合并成数据框结构
写入文件：
write.table(data,file = "data.csv",sep=",",row.names = F, col.names = F ,quote = F)
