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
相关阅读
分享个MIT big data 的slides,对新手很有帮助-已更新下载求克劳迪亚的Introduction to Data Science: Building Recommender Systems帮朋友问选校专业python sklearn nearest neighbor user defined metrichow to organize thousands of chartsData Scientist的最新定义问一道面试题有谁做过自定义地图Floor Plan的热点图么- indoor Heatmap (转载)学习Pig Latinwhich graduate program should I go?之前没有什么数学统计背景的怎么转DS?Big data是下一个大坑吗GE Healthcare Postdoctoral Fellowship (Medical Image Analysis and Visualization)Hastie/Tibs 的新书下载 (转载)杂七杂八的一些面经 (转载)有没有人想报Cloudera的Data Scientist Certificate的如何合并两个数据文件 (转载)应用统计硕士选课求教Data Science方向 (转载)求解释一下trivial这个词来点大俗的干货吧