dapengde
您好,感谢您的指点,我在运行下面的代码的时候,却提示我“Error in file(file, "rt") : cannot open the connection,cannot open file 'china_cities_20140513.csv': No such file or directory”,请问是何原因?
filelist <- dir('D:/Temp/wang/', '.csv')
for(j in filelist) {
data1 <- read.csv(j,header=F,sep=",")
newfile <- subset(data1,select=c(1,2,3,24,25,26,27,28,29,30,31,32,33,34,35,36))
write.csv(newfile,'D:/Temp/wang1')
}