数据内容

导入数据:
1  | test <-read.table("filename.txt",header=TRUE)  | 
会出现错误:Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :3行没有2元素
修改:
1  | test <-read.table("filename.txt",header=TRUE,fill=TRUE)  | 
空值设为NA
na.strings = ""
1  | test <-read.table("filename.txt",header=TRUE, fill=TRUE, na.strings = "")  |