如何在sweave中减小图像大小？

Question

如何在sweave中减小图像大小？

\documentclass[a4paper]{article}

\title{Sweave Example 1}
\author{Friedrich Leisch}

\begin{document}

\maketitle

In this example we embed parts of the examples from the
\texttt{kruskal.test} help page into a \LaTeX{} document:

<<>>=
data(airquality)
library(ctest)
kruskal.test(Ozone ~ Month, data = airquality)
@
which shows that the location parameter of the Ozone 
distribution varies significantly from month to month. Finally we
include a boxplot of the data:

\begin{center}
<<fig=TRUE,echo=FALSE>>=
boxplot(Ozone ~ Month, data = airquality) ## reduce image size so that can fit in window.
@
\end{center}

\end{document}

问候

Answer 1

试试knitr，而不是斯威夫。请参见out.width和out.height options。

您的示例将如下所示：

\documentclass[a4paper]{article}

\title{Sweave Example 1}
\author{Friedrich Leisch}

\begin{document}

\maketitle

In this example we embed parts of the examples from the
\texttt{kruskal.test} help page into a \LaTeX{} document:

<<>>=
data(airquality)
library(ctest)
kruskal.test(Ozone ~ Month, data = airquality)
@
which shows that the location parameter of the Ozone 
distribution varies significantly from month to month. Finally we
include a boxplot of the data:

<<plot,fig.align="center",out.width="0.8\\linewidth",echo=FALSE>>=
boxplot(Ozone ~ Month, data = airquality) ## reduce image size so that can fit in window.
@

\end{document}