我尝试使用dplyr管道从子集中删除NA.我的回答是错过了一步的迹象.我正在尝试学习如何使用dplyr编写函数:
> outcome.df%>%
+ group_by(Hospital,State)%>%
+ arrange(desc(HeartAttackDeath,na.rm=TRUE))%>%
+ head()
Source: local data frame [6 x 5]
Groups: Hospital, State
Hospital State HeartAttackDeath
1 ABBEVILLE AREA MEDICAL CENTER SC NA
2 ABBEVILLE GENERAL HOSPITAL LA NA
3 ABBOTT NORTHWESTERN HOSPITAL MN 12.3
4 ABILENE REGIONAL MEDICAL CENTER TX 17.2
5 ABINGTON MEMORIAL HOSPITAL PA 14.3
6 ABRAHAM LINCOLN MEMORIAL HOSPITAL IL NA
Variables not shown: HeartFailureDeath (dbl), PneumoniaDeath
(dbl)