A*0
2 楼
getwd()
pollutantmeanfor(i in id)
{ if(i<10){dataheader=T, na.string=c("NA","NaN"," "))}
else if(i>=10 & i<100){data=""),header=T, na.strings=c("NA","NAN",""))}
else{datastring=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?
pollutantmeanfor(i in id)
{ if(i<10){dataheader=T, na.string=c("NA","NaN"," "))}
else if(i>=10 & i<100){data=""),header=T, na.strings=c("NA","NAN",""))}
else{datastring=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
4 楼
有一个引号是中文的引号
sep
~~~~" “
【在 A*********0 的大作中提到】
: getwd()
: pollutantmean: for(i in id)
: { if(i<10){data: header=T, na.string=c("NA","NaN"," "))}
: else if(i>=10 & i<100){data: =""),header=T, na.strings=c("NA","NAN",""))}
: else{data: string=c("NA","NaN”," ")}
: if(pollutant="sulfate"){total=total+sum(data$sulfate)}
sep
~~~~" “
【在 A*********0 的大作中提到】
: getwd()
: pollutantmean: for(i in id)
: { if(i<10){data: header=T, na.string=c("NA","NaN"," "))}
: else if(i>=10 & i<100){data: =""),header=T, na.strings=c("NA","NAN",""))}
: else{data: string=c("NA","NaN”," ")}
: if(pollutant="sulfate"){total=total+sum(data$sulfate)}
a*z
6 楼
牛X
p*y
7 楼
口爱
n*2
11 楼
有几张看着都要掉下来了
f*e
13 楼
前两张好怪啊
a*r
15 楼
哈哈,赞猫咪
c*7
16 楼
They are like human babies....cute
p*8
17 楼
可爱死了
还倒挂金钟,技术很高啊
还倒挂金钟,技术很高啊
i*s
18 楼
好图。
R*l
19 楼
太太滑稽了
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