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038-output-width.tex
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038-output-width.tex
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\documentclass{article}\usepackage[]{graphicx}\usepackage[]{xcolor}
% maxwidth is the original width if it is less than linewidth
% otherwise use linewidth (to make sure the graphics do not exceed the margin)
\makeatletter
\def\maxwidth{ %
\ifdim\Gin@nat@width>\linewidth
\linewidth
\else
\Gin@nat@width
\fi
}
\makeatother
\definecolor{fgcolor}{rgb}{0.345, 0.345, 0.345}
\newcommand{\hlnum}[1]{\textcolor[rgb]{0.686,0.059,0.569}{#1}}%
\newcommand{\hlsng}[1]{\textcolor[rgb]{0.192,0.494,0.8}{#1}}%
\newcommand{\hlcom}[1]{\textcolor[rgb]{0.678,0.584,0.686}{\textit{#1}}}%
\newcommand{\hlopt}[1]{\textcolor[rgb]{0,0,0}{#1}}%
\newcommand{\hldef}[1]{\textcolor[rgb]{0.345,0.345,0.345}{#1}}%
\newcommand{\hlkwa}[1]{\textcolor[rgb]{0.161,0.373,0.58}{\textbf{#1}}}%
\newcommand{\hlkwb}[1]{\textcolor[rgb]{0.69,0.353,0.396}{#1}}%
\newcommand{\hlkwc}[1]{\textcolor[rgb]{0.333,0.667,0.333}{#1}}%
\newcommand{\hlkwd}[1]{\textcolor[rgb]{0.737,0.353,0.396}{\textbf{#1}}}%
\let\hlipl\hlkwb
\usepackage{framed}
\makeatletter
\newenvironment{kframe}{%
\def\at@end@of@kframe{}%
\ifinner\ifhmode%
\def\at@end@of@kframe{\end{minipage}}%
\begin{minipage}{\columnwidth}%
\fi\fi%
\def\FrameCommand##1{\hskip\@totalleftmargin \hskip-\fboxsep
\colorbox{shadecolor}{##1}\hskip-\fboxsep
% There is no \\@totalrightmargin, so:
\hskip-\linewidth \hskip-\@totalleftmargin \hskip\columnwidth}%
\MakeFramed {\advance\hsize-\width
\@totalleftmargin\z@ \linewidth\hsize
\@setminipage}}%
{\par\unskip\endMakeFramed%
\at@end@of@kframe}
\makeatother
\definecolor{shadecolor}{rgb}{.97, .97, .97}
\definecolor{messagecolor}{rgb}{0, 0, 0}
\definecolor{warningcolor}{rgb}{1, 0, 1}
\definecolor{errorcolor}{rgb}{1, 0, 0}
\newenvironment{knitrout}{}{} % an empty environment to be redefined in TeX
\usepackage{alltt}
\usepackage{url}
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
\begin{document}
the value of $\pi$ is 3.1416, and the function to read a table is read.table().
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlkwd{rnorm}\hldef{(}\hlnum{10}\hldef{)}
\end{alltt}
\begin{verbatim}
## [1] -0.56048 -0.23018 1.55871 0.07051 0.12929 1.71506
## [7] 0.46092 -1.26506 -0.68685 -0.44566
\end{verbatim}
\end{kframe}
\end{knitrout}
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlkwd{getOption}\hldef{(}\hlsng{"width"}\hldef{)}
\end{alltt}
\begin{verbatim}
## [1] 60
\end{verbatim}
\begin{alltt}
\hldef{x} \hlkwb{=} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1}
\end{alltt}
\end{kframe}
\end{knitrout}
% use default global width
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlkwd{getOption}\hldef{(}\hlsng{"width"}\hldef{)}
\end{alltt}
\begin{verbatim}
## [1] 60
\end{verbatim}
\begin{alltt}
\hldef{x} \hlkwb{=} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1}
\end{alltt}
\end{kframe}
\end{knitrout}
You can also tell knitr not to touch your source code using the chunk option tidy=FALSE, so that you can format the source code in any way you want:
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+}
\hlnum{1}\hlopt{+}\hlnum{1}\hlopt{+}
\hlnum{1}
\end{alltt}
\begin{verbatim}
## [1] 5
\end{verbatim}
\begin{alltt}
\hldef{f} \hlkwb{=} \hlkwa{function}\hldef{() \{}
\hlkwd{paste}\hldef{(}\hlsng{'I want to break the line'}\hldef{,}
\hlsng{'here!'}\hldef{)}
\hldef{\}}
\end{alltt}
\end{kframe}
\end{knitrout}
Compare the above chunk to the default behavior (tidy=TRUE):
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1} \hlopt{+} \hlnum{1}
\end{alltt}
\begin{verbatim}
## [1] 5
\end{verbatim}
\begin{alltt}
\hldef{f} \hlkwb{=} \hlkwa{function}\hldef{() \{}
\hlkwd{paste}\hldef{(}\hlsng{"I want to break the line"}\hldef{,} \hlsng{"here!"}\hldef{)}
\hldef{\}}
\end{alltt}
\end{kframe}
\end{knitrout}
I only mentioned how to control the width of source code. For the width of output, it is much trickier; see \url{http://yihui.org/knitr/demo/output/}.
\end{document}