我有一个dataframe
,看起来像这样:
my_df <- data.frame(
x = c("V1", "V2", "V3", "V4"),
score = c(1, 4, 6, 3),
order = c(1, 4, 3, 2)
)
my_df$x
的级别如下:
> my_df$x
[1] V1 V2 V3 V4
Levels: V1 V2 V3 V4
我希望能够根据x
列重新排列order
的级别,如下所示:
my_df_ <- my_df %>%
mutate(x = factor(x, x[order]))
my_df_$x
[1] V1 V2 V3 V4
Levels: V1 V4 V3 V2
但是我希望能够在使用tidyeval
的函数中执行此操作,而对于像我这样的人却无法弄清楚如何...我很高兴能够传递任一字符串("x"
)或表达式(x
)。
答案 0 :(得分:2)
使用public changedInput(value){
if(this.model.mac_address){
//we do not need the value, we just update the formatedMac using this.model.mac_address
const inputWithourColon = this.model.mac_address.replace(new RegExp(";", 'g'), "");
let blocks = inputWithourColon.match(/.{1,2}/g);
let formatedMac = blocks.shift();
for (let block of blocks){
formatedMac = formatedMac + ";" + block;
}
this.model.mac_address = formatedMac;
}
}
的潜在解决方案可能是:
forcats