自定义xtable

问题描述

我想自定义xtable以导出到LaTeX.我知道这里有一些关于xtable的问题，但是我找不到想要的特定内容.

I'd like to customize xtable for export into LaTeX. I know there are some questions abot xtable here, but I couldn't find the specific things I'm looking for.

以下是我的表格外观的一个示例:

Here is an example of how my table might look like:

my.table <- data.frame(Specifiers=c("","Spec1", "Spec2", "Spec3"),
    Values1 = c("N=10", 1.03, 1.71, 2.25),
    Values2 = c("N=20", 1.32, 1.79, 2.43))
colnames(my.table)[1] <- ""

哪个创建了

         Values1 Values2
1          N=10    N=20
2 Spec1    1.03    1.32
3 Spec2    1.71    1.79
4 Spec3    2.25    2.43

实际上，此表是从.csv文件导入的，而data.frame和my.table <- read.delim("filename.csv", sep=",", header=TRUE)

In fact, this table is imported from a .csv-file as data.frame with my.table <- read.delim("filename.csv", sep=",", header=TRUE)

现在我用xtable创建一个LaTeX表:

Now I create a LaTeX table with xtable:

latex.tab <- xtable(my.table, caption=c("Stats"))
print(latex.tab, file="Summarystats.tex",
  floating.environment='sidewaystable',
  include.rownames=FALSE,
  booktabs=TRUE,
  latex.environment=NULL)

这是生成的LaTeX代码:

Here is the resulting LaTeX code:

\begin{sidewaystable}[ht]
\begin{tabular}{lllllll}
  \toprule
 & Values1 & Values2 \\ 
  \midrule
               N=10  &  N=20 \\
     Spec1  &  1.03  &  1.32 \\
     Spec2  &  1.71  &  1.79 \\
     Spec3  &  2.25  &  2.43 \\

   \bottomrule
\end{tabular}
\end{sidewaystable}

好，现在我要更改:

1)在第二行之后而不是第一行之后插入\midrule.2)通过在sidewaystable(或普通table)环境中插入\rowcolors{2}{gray!25}{white}来更改此表的行的颜色.3)将列名称旋转45°4)在要居中放置表格的情况下，插入\centering而不是center环境.

1) Insert \midrule after the second row instead of after the first.2) Alternating colours of the rows of this table by inserting \rowcolors{2}{gray!25}{white} within the sidewaystable (or normal table) environment.3) Rotating column names by 45°4) Insert \centering instead of the center-environment in cases when I want to center the table.

关于如何实现这一目标的任何想法?

Any ideas on how to achieve this?

推荐答案

您需要一些预处理，传递给print.xtable的额外参数以及一些后处理:

You need some pre-processing, extra argument passed to print.xtable and some post-processing:

my.table <- data.frame(Specifiers=c("","Spec1", "Spec2", "Spec3"),
                       Values1 = c("N=10", 1.03, 1.71, 2.25),
                       Values2 = c("N=20", 1.32, 1.79, 2.43))
colnames(my.table)[1] <- ""

# Pre-processing: rotates column names by 45 degrees
head = apply(as.array(names(my.table)), 1, function(x) paste("\\rotatebox{45}{", x, "}"))
head = paste(head, c(rep("&", length(head)-1), "\\\\\n"), collapse="")

latex.tab <- xtable(my.table, caption=c("Stats"))
ltable = print(latex.tab, file="", # File is empty, post-processing needed
      floating.environment='sidewaystable',
      include.rownames=FALSE,
      include.colnames=FALSE, # No colnames
      booktabs=TRUE,
      latex.environment="center", # Or NULL
      # Adds some extra-text after the rows specified in pos.
      # Adds new \midrule and comments old one.
      # Adds pre-processed names of columns
      add.to.row=list(pos=as.list(c(0, 0, 1)), command=as.vector(c(head, "%", "\\midrule\n"))))

# Post-processing: replaces \begin{center} with \centering
ltable = sub("\\begin{center}\n", "\\centering\n", ltable, fixed=TRUE)
ltable = sub("\\end{center}\n", "\n", ltable, fixed=TRUE)

# Post-processing: adds alternating colours
ltable = sub("\\begin{tabular}",
             "\\rowcolors{2}{gray!25}{white}\n\\begin{tabular}",
            ltable, fixed=TRUE)

# Writes output to the file
cat(ltable, file="Summarystats.tex")

如果您需要除tabular之外的其他选项卡环境，则可以1)添加新变量:

If you need other tabs environment than tabular you can 1) add new variable:

TABULAR = "tabular"

2)像这样将其值传递给print.xtable:

2) Pass it's value to print.xtable like this:

...
tabular.environment=TABULAR,
...

3)将后处理更改为交替的颜色:

3) Change your post-processing for alternating colors:

ltable = sub(sprintf("\\begin{%s}", TABULAR),
             sprintf("\\rowcolors{2}{gray!25}{white}\n\\begin{%s}", TABULAR),
             ltable, fixed=TRUE)

结果:

这篇关于自定义xtable的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！