dt<- read.csv(file = "D:\\price.csv", header = T, na.strings = "null")
closeA<-dt[,2]
closeN<-dt[,3]
n<-length(closeA)
Areturn<-log(closeA[2:n])-log(closeA[1:n-1])  
Nreturn<-log(closeN[2:n])-log(closeN[1:n-1])
Return.ts<-ts(Nreturn,start=c(2018),freq=365)
plot(Return.ts,type="l",main="Daily Return of NSX-100",xlab="Date", ylab="Return", cex.main=0.95, las=1)

怎么把下面的时间设置成数据中的和时间？用了ts之后，代码一直出错，运行不了

改成这样运行不了，错误：意外的“，”
plot(y=Date.ts, x=Return.ts, type="l", main="Daily Return of AMD", xlab="Date", ylab="Return", xlim=(2018, 2022), ylim=(-0.15, 0.15), cex.main=0.95, las=1)