百分比在area（）函数上不起作用 - formattable

Question

我尝试使用area()函数创建一个百分比值的表格。但实际上它根本不起作用（即百分比值）。有谁知道如何修理它？

#library(magrittr) 
#library(dplyr) 
#library(formattable) 
#library(scales) 

set.seed(123) 
df <- data.frame(id = 1:10, 
      a = rnorm(10), b = rnorm(10), c = rnorm(10)) 

df <- df %>% 
    mutate(a = percent(a), b = percent(b), c = percent(c)) 

# show percentage value without using area function 
formattable(df, list(a = color_tile("transparent", "pink"), 
        b = color_tile("transparent", "pink"), 
        c = color_tile("transparent", "pink"))) 

# does not show percentage value 
formattable(df, list(area(col = a:c) ~ color_tile("transparent", "pink"))) 

sessionInfo() 

[1] formattable_0.2 DT_0.1   scales_0.4.0 
[4] tidyr_0.4.1  rCharts_0.4.5  dplyr_0.4.3  
[7] shiny_0.13.2  

Answer 1

到目前为止，我已经得到了最好的结果已经使用此代码以：

formattable(df, list(area(col = a:c) ~ percent)) 

但我不知道如何更改号码的位数:(