r 重命名因子级别来自http://www.cookbook-r.com/Manipulating_data/Renaming_levels_of_a_factor/

Posted 2021-05-24

library(plyr)
revalue(x, c("beta"="two", "gamma"="three"))
#> [1] alpha two   three alpha two  
#> Levels: alpha two three

mapvalues(x, from = c("beta", "gamma"), to = c("two", "three"))
#> [1] alpha two   three alpha two  
#> Levels: alpha two three