r使用kableExtra为单元着色并维护带有嵌套的if/ifelse的条纹格式

Question

对此问题的扩展：r想要限制来自CSV文件的数字

我正在使用kableExtra和cell_spec用嵌套的ifelse语句为单元着色。

我不想将其放置在少于.10白色的情况下，而是要让它们独自一人，以便允许KableExtra应用条纹格式。

我感觉这是不可能的，因为如何应用背景颜色？

df：

DF <- data.frame(V1 = sample(letters,10,T), V2 = abs(rnorm(10)), V3 = abs(rnorm(10)))

代码：

library(magrittr)
library(kableExtra)
paint <- function(x) {
  ifelse(x < 0.1, "white", ifelse(x < 0.2, "yellow", "red"))
}
DF[, -1] = lapply(DF[, -1], formatC, format = 'f', flag='0', digits = 2)
DF[,-1] = lapply(DF[,-1], function(x) cell_spec(x, background = paint(x), format = "latex"))
DF %<>%
  mutate_if(is.numeric, function(x) {
   cell_spec(x, background = paint(x), format = "latex") 
  })
kable(DF, caption = "colorized table with striping", digits = 2, format = "latex", booktabs = T, escape = F, longtable = T)%>%
  kable_styling(latex_options = c("striped", "hold_position", "repeat_header", font_size = 6))%>%
  landscape()%>%
  row_spec(0, angle = 45)

问题区域？

paint <- function(x) {
      ifelse(x < 0.1, "white", ifelse(x < 0.2, "yellow", "red"))
    }

当黄色（> =。10＆lt; .2）和红色（> =。2）之间，可以将其更改为仅更改颜色？还是必须定义所有条件？

所需的输出：仅突出显示定义的值的条纹表，使条纹在小于.10

Answer 1

您无需将任何格式应用于您希望独自留下的单元格。因此，只需在调用cell_spec之前对该条件进行测试（即，仅针对要格式化的细胞调用Cell_spec）：

paint <- function(x) ifelse(x < 0.2, "yellow", "red")
DF[,-1] = lapply(DF[,-1], formatC, format = 'f', digits = 2)
DF[,-1] = lapply(DF[,-1], function(x) 
  ifelse(x < 0.1, x, cell_spec(x, background = paint(x), format = "latex")))
kable(DF, caption = "Highlighted numbers near zero", 
  digits = 2, format = "latex", booktabs = T, escape = F, longtable = T) %>%
  kable_styling(latex_options = c("striped", "hold_position", 
    "repeat_header", font_size = 6)) %>%
  landscape() %>%
  row_spec(0, angle = 45)