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047-tikz-png.tex
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047-tikz-png.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}
% you do not really need this, since png has higher priority to pdf by default
\DeclareGraphicsExtensions{.png,.pdf,.jpeg,.jpg}
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
\begin{document}
This is an example showing you how to convert PDF figures generated by tikz to PNG via ImageMagick:
The plot in this chunk is converted to PNG:
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hldef{(x} \hlkwb{=} \hlkwd{rnorm}\hldef{(}\hlnum{20}\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 1.22408 0.35981
## [13] 0.40077 0.11068 -0.55584 1.78691 0.49785 -1.96662
## [19] 0.70136 -0.47279
\end{verbatim}
\begin{alltt}
\hlkwd{par}\hldef{(}\hlkwc{mar} \hldef{=} \hlkwd{c}\hldef{(}\hlnum{4.5}\hldef{,} \hlnum{4}\hldef{,} \hlnum{0.1}\hldef{,} \hlnum{0.1}\hldef{))}
\hlkwd{hist}\hldef{(x,} \hlkwc{main} \hldef{=} \hlsng{""}\hldef{,} \hlkwc{xlab} \hldef{=} \hlsng{"$x$ (how the fonts look like here?)"}\hldef{,}
\hlkwc{ylab} \hldef{=} \hlsng{"$\textbackslash{}\textbackslash{}hat\{f\}(x) = \textbackslash{}\textbackslash{}frac\{1\}\{nh\}\textbackslash{}\textbackslash{}sum_\{i=1\}^n \textbackslash{}\textbackslash{}cdots$"}\hldef{)}
\end{alltt}
\end{kframe}
\includegraphics[width=\maxwidth]{figure/047-tikz-png-test-a-1}
\end{knitrout}
This chunk uses the PDF device, and it is not converted:
\begin{knitrout}
\definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}\color{fgcolor}\begin{kframe}
\begin{alltt}
\hlkwd{par}\hldef{(}\hlkwc{mar} \hldef{=} \hlkwd{c}\hldef{(}\hlnum{4.5}\hldef{,} \hlnum{4}\hldef{,} \hlnum{0.1}\hldef{,} \hlnum{0.1}\hldef{))}
\hlkwd{plot}\hldef{(x,} \hlkwc{pch} \hldef{=} \hlnum{19}\hldef{)}
\end{alltt}
\end{kframe}
\includegraphics[width=\maxwidth]{figure/047-tikz-png-test-b-1}
\end{knitrout}
\end{document}