在列中删除NA值为NA的行

Question

我在R中有一个dataset.csv。我想从等级列中删除所有的NA值。

列是这样

Rank State 
NA District of Columbia†
1 Connecticut 
2 New Jersey 
3 Massachusetts 
4 Maryland 
5 New Hampshire 
6 Virginia 
7 New York 
8 North Dakota 
9 Alaska 
10 Minnesota 
11 Colorado 
12 Washington 
13 Rhode Island 
14 Delaware 
15 California 
16 Illinois 
17 Hawaii 
18 Wyoming 
19 Pennsylvania 
20 Vermont 
NA United States 
21 Iowa 

这个CSV的数据框被称为RacePerState

我已经试过

subset(RacePerState, State!="United States" && State!="District of Columbiaâ€" && !="Puerto Ricoâ€") 

RacePerState <- RacePerState[!(RacePerState$Rank=="NA"),] 

但代码当我写数据帧到CSV的数据仍然存在。

任何帮助？

Answer 1

RacePerState <- subset(RacePerState, !is.na(Rank)) 

或

RacePerState <- RacePerState[!is.na(RacePerState$Rank), ] 

或

RacePerState <- RacePerState[complete.cases(RacePerState), ] 

或

require(dplyr); 
require(magrittr); 
RacePerState %>% na.omit();