Graphics, Figures & Tables ⇒ Convert xtable into multiple columns

[greenStone]

I have an .Rnw file in RStudio (which I am pasting below). I am displaying a data frame using the xtable() function. In the example below, the data frame contains 26 rows. I convert the .Rnw file to .tex to .pdf, using the following commands:

Code: Select all

library(knitr)
knit("code.Rnw","code.tex")
pdflatex code.tex

Here is the .Rnw file:

Code: Select all

\documentclass[12pt,english,nohyper]{tufte-handout}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{longtable}
\usepackage{wrapfig}
\usepackage{hyperref}
\usepackage{graphicx}
\usepackage[space]{grffile}
\usepackage{geometry}
\usepackage{pgffor}
\usepackage{caption}
\usepackage{calc}
\usepackage{enumitem}
\usepackage{microtype}
\usepackage{tabularx} % specify width of xtable

\makeatletter
\makeatother
\newcounter{marginresume}

\begin{document}

<<include=FALSE>>=
library(ggplot2)
library(reshape2)
library(xtable)
library(dplyr)
library(stringr)
@

<<echo=FALSE,results='asis'>>=
set.seed(1)
myDF = data.frame(vals=runif(26, 1, 10))
row.names(myDF) = letters

print(xtable(myDF,caption='This is the caption to my data frame',align='lr'),floating=FALSE, tabular.environment = "longtable")

#align(x.width) <- "|X|X|X|" #Not working
@

\end{document}

This does generate a nice xtable() output, with 26 rows:

This is the current output.

tableOrig.png (36.06 KiB) Viewed 4517 times

However, as the column width is very small, I have a very long and narrow xtable() output.

Instead, I would like to automate the display of the xtable() output such that there are three tables produced, side-by-side. In this case, there would be 9 rows in the left-most table, 9 rows in the middle table, and 8 rows in the right-most table. It would look something like this:

This is the ideal output.

tableCol.png (28.33 KiB) Viewed 4517 times

Is it possible to accomplish this? This is an automated process, and so the input data frame will not always be 26 rows. Instead, the row number will vary.

Thank you for any advice!

[Johannes_B]

Never used knitr and don't know anything about its capabilities concerning LaTeX output, but maybe the following helps you: Automatic way to break narow tables into two columns