[英]R character vectors into factors
I have a character vector of the type a<- c('ES1-5', 'ES14-26', 'ES27-38', 'ES6-13', 'SA1-13', 'SA14-25')
and it is a column of a dataframe. 我的字符向量类型为
a<- c('ES1-5', 'ES14-26', 'ES27-38', 'ES6-13', 'SA1-13', 'SA14-25')
和它是数据框的一列。
What I would like to do is to transform into a factor with levels 1,2,3,4,5,6 and subsequently transform into a numerical vector of 1,2,3,4,5,6 and colbind into the dataframe. 我想做的就是将其转换为具有1,2,3,4,5,6级的因子,然后转换为1,2,3,4,5,6的数值向量并合并到数据帧中。
Could someone give me an elegant way to do this please. 有人可以给我一种优雅的方法来做到这一点。
You can use as.numeric(as.factor)) 您可以使用as.numeric(as.factor))
##Some random data##
a<- c('ES1-5', 'ES14-26', 'ES27-38', 'ES6-13', 'SA1-13', 'SA14-25')
x <- tibble(x = rnorm(6),
y = rnorm(6),
a = a) ##Append vector a as column in a dataframe
##Make a into a factor and append to the dataframe
x$a_factor <- as.numeric(factor(x$a))
x
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