knitr xtable高亮显示并为同一行添加水平线,

时间:2013-10-07 09:28:14

标签: r knitr xtable longtable

我正在使用knitr和xtable来自动化我的报告程序。我想突出显示表格的几行,并在每行突出显示的正上方有一条水平线。我正在使用的.Rnw文件如下所示:

\usepackage{colortbl, xcolor}
\usepackage{longtable}

\begin{document}

<<do_table, results = "asis">>=
library(xtable)
mydf <- data.frame(id = 1:10, var1 = rnorm(10), var2 = runif(10))

print(xtable(mydf), add.to.row = list(pos = list(0,2), command = rep("\\rowcolor[gray]{0.75}",2)),hline.after=c(0,2))
@

\end{document}

这很好用,但是,如果我将最后一行代码调整为

,我正在使用的表应该是一个longtable。
print(xtable(mydf), add.to.row = list(pos = list(0,2), command = rep("\\rowcolor[gray]{0.75}",2)),hline.after=c(0,2),tabular.environment="longtable",floating=FALSE)

输出非常难看,行未按预期突出显示。任何人都可能知道这个问题的答案吗?

感谢,

大卫

3 个答案:

答案 0 :(得分:3)

抱歉,稍微偏离主题,但展示了一种仅用于降价的解决方案,可以轻松突出显示单元格/行:

> mydf <- data.frame(id = 1:10, var1 = rnorm(10), var2 = runif(10))
> library(pander)
> emphasize.strong.rows(c(1, 3))
> pander(mydf)

---------------------------
 id      var1       var2   
----- ---------- ----------
**1** **0.7194** **0.6199**

  2     0.8094     0.1392  

**3** **-1.254** **0.5308**

  4     0.4505     0.8235  

  5    -0.3779     0.7534  

  6    -0.3518     0.3055  

  7     1.759      0.5366  

  8     0.9822     0.9938  

  9     1.549      0.3589  

 10     -1.077     0.5153  
---------------------------

可以直接转换为LaTeX或pdf。

答案 1 :(得分:2)

您走在正确的轨道上,但我有点困惑:您是否希望hline rowcolor突出显示所选行?根据我的经验,单独的rowcolor看起来更好,所以我将在下面的答案中假设(但你可以轻松地使用它们,只需附加\\hline命令)。

作为奖励,下面的所有代码都假设您使用LaTeX booktabs包,它提供了正确的加权规则(与hline不同)。说实话,我总是使用booktabs,我无法调整代码以使用hline - 但如果您更喜欢hline,请替换所有\toprule\midrule\bottomrule带有\hline的宏。

您似乎错过了LaTeX longtables需要特殊标题,我们还需要将其作为command列表的add.to.row向量的元素提供(这可能是您排版的原因)表看起来很糟糕。)

longtable.xheader <-
   paste("\\caption{Set your table caption.}",
     "\\label{tab:setyourlabel}\\\\ ",
     "\\toprule ",
     attr(xtable(mydf), "names")[1],
     paste(" &", attr(xtable(mydf), "names")[2:length(attr(xtable(mydf), "names"))], collapse = ""),
     "\\\\\\midrule ",
     "\\endfirsthead ",
     paste0("\\multicolumn{", ncol(xtable(mydf)), "}{c}{{\\tablename\\ \\thetable{} -- continued from previous page}}\\\\ "),
     "\\toprule ",
     attr(xtable(mydf), "names")[1],
     paste("&", attr(xtable(mydf), "names")[2:length(attr(xtable(mydf), "names"))], collapse = ""),
     "\\\\\\midrule ",
     "\\endhead ",
     "\\midrule ",
     paste0("\\multicolumn{", as.character(ncol(xtable(mydf))), "}{r}{{Continued on next page}}\\\\ "),
     "\\bottomrule \\endfoot ",
     "\\bottomrule \\endlastfoot ",
     collapse = "")

完成后,请继续print xtable:

print(xtable(mydf), 
      floating = FALSE, % since longtable never floats
      hline.after = NULL, % hline off since I use booktabs
      add.to.row = list(pos = list(-1, 
                               c(0, 2),
                               nrow(xtable(mydf))),
                    command = c(longtable.xheader, 
                                "\\rowcolor[gray]{0.75}\n",
                                "%")), % comments out a spurious \hline by xtable
      include.rownames = FALSE, % depends on your preference
      include.colnames = FALSE, % depends on your preference
      type = "latex", 
      tabular.environment = "longtable",
      % xtable tries to escape TeX special chars, can be annoying sometimes
      sanitize.text.function = function(x){x},
      % not all dashes are meant to be math negative sign, set according to your data
      math.style.negative = FALSE)

我希望我在回答中使用booktabs并不会让你太过困惑。 继续编织!

答案 2 :(得分:1)

您可能会在乳胶论坛上发布更多运气。您应该注意xcolor / longtable不兼容:http://www.ukern.de/tex/xcolor.html