A*********0 发帖数: 144 | 1 getwd()
pollutantmean<-function(getwd(),id=1:332){
for(i in id)
{ if(i<10){data<-read.csv(paste("0","0",as.character(i),".csv",sep=""),
header=T, na.string=c("NA","NaN"," "))}
else if(i>=10 & i<100){data<-read.csv(paste("0",as.character(i),".csv",sep
=""),header=T, na.strings=c("NA","NAN",""))}
else{data<-read.csv(paste(as.character(i),".csv",sep=""),header=T,na.
string=c("NA","NaN”," ")}
if(pollutant="sulfate"){total=total+sum(data$sulfate)}
else{total=total+sum(data$nitrate)}
}
setwd("..")
return(total/observation)
}, 请好心人指点我哪里错了? | W**o 发帖数: 547 | 2 有一个引号是中文的引号
sep
~~~~" “
【在 A*********0 的大作中提到】 : getwd() : pollutantmean<-function(getwd(),id=1:332){ : for(i in id) : { if(i<10){data<-read.csv(paste("0","0",as.character(i),".csv",sep=""), : header=T, na.string=c("NA","NaN"," "))} : else if(i>=10 & i<100){data<-read.csv(paste("0",as.character(i),".csv",sep : =""),header=T, na.strings=c("NA","NAN",""))} : else{data<-read.csv(paste(as.character(i),".csv",sep=""),header=T,na. : string=c("NA","NaN”," ")} : if(pollutant="sulfate"){total=total+sum(data$sulfate)}
| a*z 发帖数: 294 | | A*********0 发帖数: 144 | 4 不过好像改了也一直运行不了,奇怪。初学者,谢谢!
【在 a*z 的大作中提到】 : 牛X
| W**o 发帖数: 547 | 5 把你改好的再贴一下
【在 A*********0 的大作中提到】 : 不过好像改了也一直运行不了,奇怪。初学者,谢谢!
| A*********0 发帖数: 144 | 6 Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
cannot open file 'specdata/001.csv': No such file or directory, 运行时出现
这个状况,如何解决。
【在 W**o 的大作中提到】 : 把你改好的再贴一下
| W**o 发帖数: 547 | 7 你的001.csv 不在你的工作目录下
【在 A*********0 的大作中提到】 : Error in file(file, "rt") : cannot open the connection : In addition: Warning message: : In file(file, "rt") : : cannot open file 'specdata/001.csv': No such file or directory, 运行时出现 : 这个状况,如何解决。
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