使用 rbind two 组合两个单列变量

Question

我试图简单地对两列使用 rbind 并且我使用以下内容（所有变量都是城市名称并且 r 将它们视为因素）

firstcitynames <- rcffull$X1CityName 
secondcitynames <- rcffull$X2CityName
allcitynames <- rbind(firstcitynames, secondcitynames)
allcitynames

然后当到达 View(allcitynames) 时，我得到的只是一堆数字而不是名称：

[,2276] [,2277] [,2278] [,2279] [,2280] [,2281]
                [,2282] [,2283] [,2284] [,2285] [,2286] [,2287]

有什么建议吗？

Answer 1

您需要使用 as.character(df$var)

将因子转换为字符

这是一个插图

a <- factor(letters[1:10])
b <- factor(LETTERS[1:10])
rbind(a,b)
##    [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
## a    1    2    3    4    5    6    7    8    9    10
## b    1    2    3    4    5    6    7    8    9    10

rbind(as.character(a), as.character(b))
##      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
## [1,] "a"  "b"  "c"  "d"  "e"  "f"  "g"  "h"  "i"  "j"  
## [2,] "A"  "B"  "C"  "D"  "E"  "F"  "G"  "H"  "I"  "J"

Answer 2

假设 firstcitynames 和 secondcitynames 是类型因子你可以试试这个

rbind(levels(firstcitynames),levels(secondcitynames))

Answer 3

这个也有效：

firstcitynames <- as.tibble(rcffull$X1CityName)   
secondcitynames <- as.tibble(rcffull$X2CityName)
allcitynames <- rbind(firstcitynames, secondcitynames)
allcitynames

使用 rbind two 组合两个单列变量

using rbind two combine two one-column variables

r

rbind