R formattable上的列宽相等

Question

我正在使用可格式化包直接从 R 生成一些报告，我需要使用 normalize_bar "style" 的列具有相同的宽度，以便可以比较列之间的值。

以下示例显示了两个值非常相似（最小值和最大值相等）但宽度不同的列，丢失了条形图的图形细节（"Test.number.1.score" 和 "test2_score"） .

library(formattable)

df <- data.frame(
  id = 1:10,
  name = c("Bob", "Ashley", "James", "David", "Jenny", 
           "Hans", "Leo", "John", "Emily", "Lee"), 
  age = c(28, 27, 30, 28, 29, 29, 27, 27, 31, 30),
  grade = c("C", "A", "A", "C", "B", "B", "B", "A", "C", "C"),
  Test.number.1.score = c(8.9, 9.5, 9.6, 8.9, 9.1, 9.3, 9.3, 9.9, 8.5, 8.6),
  test2_score = c(9.1, 9.1, 9.2, 9.1, 8.9, 8.5, 9.9, 9.3, 9.1, 8.6),
  final_score = c(9, 9.3, 9.4, 9, 9, 8.9, 9.25, 9.6, 8.8, 8.7),
  registered = c(TRUE, FALSE, TRUE, FALSE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE),
  stringsAsFactors = FALSE)

formattable(df, list(
  age = color_tile("white", "orange"),
  grade = formatter("span", style = x ~ ifelse(x == "A", 
                                               style(color = "green", font.weight = "bold"), NA)),
  area(col = c(Test.number.1.score, test2_score)) ~ normalize_bar("pink", 0.2),
  final_score = formatter("span",
                          style = x ~ style(color = ifelse(rank(-x) <= 3, "green", "gray")),
                          x ~ sprintf("%.2f (rank: %02d)", x, rank(-x))),
  registered = formatter("span",
                         style = x ~ style(color = ifelse(x, "green", "red")),
                         x ~ icontext(ifelse(x, "ok", "remove"), ifelse(x, "Yes", "No")))
))

提前致谢。

Answer 1

直接使用格式化程序解决了这个问题。您希望两列的宽度相同。

当我查看 color_bar 函数的代码时，我发现它们是彩色部分宽度的宽度属性。基本上我正在修改属性以获得所需的结果。

首先设置一个宽度，例如 150 像素

fixedWidth = 150

并将您的 formattable 函数调用更改为

formattable(df, list(
    age = color_tile("white", "orange"),
    grade = formatter("span", style = x ~ ifelse(x == "A", 
                                                 style(color = "green", font.weight = "bold"), NA)),
    test2_score = formatter(.tag = "span", style = function(x) style(display = "inline-block", 
                                                                     direction = "rtl", `border-radius` = "4px", `padding-right` = "2px", 
                                                                     `background-color` = csscolor("pink"), width = paste(fixedWidth*proportion(x),"px",sep="") )),
    Test.number.1.score = formatter(.tag = "span", style = function(x) style(display = "inline-block", 
                                                                             direction = "rtl", `border-radius` = "4px", `padding-right` = "2px", 
                                                                             `background-color` = csscolor("pink"), width = paste(fixedWidth*proportion(x),"px",sep="") )),


    final_score = formatter("span",
                            style = x ~ style(color = ifelse(rank(-x) <= 3, "green", "gray")),
                            x ~ sprintf("%.2f (rank: %02d)", x, rank(-x))),
    registered = formatter("span",
                           style = x ~ style(color = ifelse(x, "green", "red")),
                           x ~ icontext(ifelse(x, "ok", "remove"), ifelse(x, "Yes", "No")))
))

请注意 width = paste(fixedWidth*proportion(x),"px",sep="") 用于更改为固定宽度，csscolor("pink") 用于将格式器中的颜色更改为粉红色。

所需的输出如下所示

更新

或者更干净地，您可以创建自己的 color_bar 函数，即 my_color_bar，方法是更改其 width 参数，如下所示

my_color_bar <- function (color = "lightgray", fixedWidth=150,...) 
{
        formatter("span", style = function(x) style(display = "inline-block", 
                                                direction = "rtl", `border-radius` = "4px", `padding-right` = "2px", 
                                                `background-color` = csscolor(color), width = paste(fixedWidth*proportion(x),"px",sep=""), 
                                                ...))
}

并在您的 formattable 函数调用中使用它作为

formattable(df, list(
    age = color_tile("white", "orange"),
    grade = formatter("span", style = x ~ ifelse(x == "A", 
                                                 style(color = "green", font.weight = "bold"), NA)),
    test2_score = my_color_bar(color="pink",width = 100),
    Test.number.1.score = my_color_bar(color="pink",width=100),


    final_score = formatter("span",
                            style = x ~ style(color = ifelse(rank(-x) <= 3, "green", "gray")),
                            x ~ sprintf("%.2f (rank: %02d)", x, rank(-x))),
    registered = formatter("span",
                           style = x ~ style(color = ifelse(x, "green", "red")),
                           x ~ icontext(ifelse(x, "ok", "remove"), ifelse(x, "Yes", "No")))
))

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