我在使 ggplot2、tikzDevice 和 knitr 一起工作时遇到问题。我正在使用 RStudio,并尝试在 Latex 文档中包含一些 R 图形。我用了一个非常简单的例子:
\documentclass{article}
\begin{document}
\begin{figure}
<<fig1,eval=TRUE,echo=FALSE,dev='tikz'>>=
library(ggplot2)
library(tikzDevice)
qplot(displ, hwy, data = mpg, colour = factor(cyl))
@
\end{figure}
\end{document}
但是没有输出pdf,我收到以下错误消息:
Error in getMetricsFromLatex(TeXMetrics) :
TeX was unable to calculate metrics for the following string
or character:
hwy
Common reasons for failure include:
* The string contains a character which is special to LaTeX unless
escaped properly, such as % or $.
* The string makes use of LaTeX commands provided by a package and
the tikzDevice was not told to load the package.
The contents of the LaTeX log of the aborted run have been printed above,
it may contain additional details as to why the metric calculation failed.
Calls: knit ... widthDetails.text -> grid.Call -> <Anonymous> -> getMetricsFromLatex
Execution halted
此问题已在此处得到处理,但提出的解决方案对我不起作用。任何想法?