Problem with figures

I am having problem making ggplot2, tikzDevice, and knitr working together.
I used a very simple example:

---------------------------example.Rnw-----------------------------
\documentclass[preview]{standalone}

\begin{document}

\begin{figure}
<<fig1,eval=TRUE,echo=FALSE,dev='tikz'>>=
library(ggplot2)
qplot(displ, hwy, data = mpg, colour = factor(cyl))
@
\end{figure}

\end{document}
---------------------------------------------------------------------------------
I got "... !  ==> Fatal error occurred, no output PDF file produced!
label: fig1 (with options)
List of 3
  $ eval: logi TRUE
  $ echo: logi FALSE
  $ dev : chr "tikz"

Error in process_file(text, output) :
   Quitting from lines 6-8: (test_Rnw.Rnw) 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 -> process_file

Execution halted"

Best,
Shige

	[[alternative HTML version deleted]]

Easiest way: copy and paste the code into Rstudio and hit "compile pdf".

From the command line, I believe you can do "knit2pdf example.Rnw".

Shige


On Sun, Dec 2, 2012 at 6:12 PM, Duncan Murdoch <murdoch.duncan at gmail.com>wrote:

On 12-12-02 5:42 PM, Shige Song wrote:

I am having problem making ggplot2, tikzDevice, and knitr working
together.
I used a very simple example:

I don't use knitr so I can't really help, but you didn't tell us how you
passed this file to knitr, so maybe nobody can.  However, if you were using
Sweave, you would need to mention that the code chunk produces a figure
(using "fig=TRUE" in the <<>>= header).

Duncan Murdoch

 ---------------------------**example.Rnw-------------------**----------

\documentclass[preview]{**standalone}

\begin{document}

\begin{figure}
<<fig1,eval=TRUE,echo=FALSE,**dev='tikz'>>=
library(ggplot2)
qplot(displ, hwy, data = mpg, colour = factor(cyl))
@
\end{figure}

\end{document}
------------------------------**------------------------------**
---------------------
I got "... !  ==> Fatal error occurred, no output PDF file produced!
label: fig1 (with options)
List of 3
  $ eval: logi TRUE
  $ echo: logi FALSE
  $ dev : chr "tikz"

Error in process_file(text, output) :
   Quitting from lines 6-8: (test_Rnw.Rnw) 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 -> process_file

Execution halted"

Best,
Shige

All right. I did some more digging. It turns out that the real problem is
that the version of the "standalone" LaTeX package installed on my Debian
system is 1.1a. The easiest fix is to replace the three files
"standalone.cfg", "standalone.cls", and "standalone.sty" with the most
recent version from CTAN, which is 1.1b. Now I use
"\documentclass[preview]{standalone}" in my Rnw file to get the desired
results.