以编程方式对数据表中的数字列进行颜色格式

I am looking to color format each numeric column so that it shows a blue range bar depending on the range of each column. Here is a photo on what I am trying to achieve.

#Here is the the table I have so far.
#I am adding filters to the columns. This works great

library(DT)
library(magrittr)
df = datatable(iris, filter = 'top', options = list(pageLength = 5, autoWidth = TRUE))

#I try to add the blue bars here to the first 2 numeric columns

df %>%formatStyle(names(df)[1:2],
            background = styleColorBar(range(df[,1:2]), 'lightblue'),
            backgroundSize = '98% 88%',
            backgroundRepeat = 'no-repeat',
            backgroundPosition = 'center')
Error in df[, 1:2] : incorrect number of dimensions

如果有一个功能可以自动将蓝色条放置在所有数字列上，那就太好了。提前致谢

您可以改进以下几点：

• 以编程方式定义数字列（通过sapply(iris, is.numeric)结果）。
• 要格式化样式，您需要传递原始表（iris代替df). df由于行名称的原因，可能有不同的列。
• To styleColorBar还传递原始表而不是df.

Code:

library(magrittr)
library(DT)

# Specify numeric columns
foo <- sapply(iris, is.numeric)

datatable(iris, filter = 'top', options = list(pageLength = 5, autoWidth = TRUE)) %>%
    formatStyle(names(iris)[foo],
            background = styleColorBar(range(iris[, foo]), 'lightblue'),
            backgroundSize = '98% 88%',
            backgroundRepeat = 'no-repeat',
            backgroundPosition = 'center')

Result: