如何去除kbl表格中多余的白色线条伪影？

• 用kbl设置单元格黑色背景时，网格线与单元格之间会出现多余的白色伪影；灰色、白色背景的单元格也存在同样问题。
• 这些伪影会随PDF缩放级别变化，有时垂直出现，有时水平出现，甚至可能完全消失。
• 补充说明：经Grzegorz提示，该问题实际是PDF查看器导致的，而非LaTeX转PDF的问题。

我尝试先给整个表格设置黑色背景，再叠加其他样式，希望能覆盖PDF产生的白色线条。

原始代码 #

kbl(data, align = rep("c", ncol(data))) %>%
  kable_styling(font_size = 4, latex_options = c("scale_down", "hold_position")) %>%
  column_spec(c(12,13), color = "white",background = "black", include_thead = TRUE, width = "1cm", bold = T) %>%
  # column_spec(c(10,11), color = "white", include_thead = TRUE, width = "1cm") %>%
  column_spec(c(4,6,8,10,14), background = "lightgray", include_thead = FALSE, width = ".6cm") %>%
  column_spec(c(5,7,9,11,15), background = "white", include_thead = FALSE, width = ".6cm") 

修复尝试的最新代码 #

kbl(data, align = rep("c", ncol(data))) %>%
  kable_styling(font_size = 4, latex_options = c("scale_down", "hold_position")) %>%
  column_spec(c(1,2,3,4,5,6,7,8,9,10,11,12,13,14), background = "black", include_thead = FALSE) %>%
  column_spec(c(12,13), color = "white",background = "black", include_thead = TRUE, width = "1cm", bold = T) %>%
  # column_spec(c(10,11), color = "white", include_thead = TRUE, width = "1cm") %>%
  column_spec(c(4,6,8,10,14), background = "lightgray", include_thead = FALSE, width = ".6cm") %>%
  column_spec(c(5,7,9,11,15), background = "white", include_thead = FALSE, width = ".6cm")  %>%
  column_spec(c(1,2,3), background = "white", include_thead = TRUE) 

R Markdown的YAML配置 #

---
title: |
 | ![](images/BrandImage.jpg){width=2in}
 | `r unlist(strsplit(params$fullname,split = '_'))[2]` Forecast
params:
  fullname: "placeholder"
  vendorNo: "placeholder"
output:
 pdf_document:
   latex_engine: xelatex
mainfont: Segoe UI
classoption: landscape
---

使用的R库 #

library(tidyverse)
library(tinytex)
library(glue)
library(knitr)
library(glue)
library(dplyr)
library(scales)
library(kableExtra)
library(readxl)

内容的提问来源于stack exchange，提问作者Aaron Rose