[R] Error in .External2(C_X11, paste("png::", filename, sep = ""), g$width, : unable to start device PNG

[Ramiro Barrantes]

Hello,

I have the following reproducible knitr document:

\documentclass{article}
\usepackage[sc]{mathpazo}
\usepackage[T1]{fontenc}
\usepackage{geometry}

\begin{document}

<<test,dev="png",echo=FALSE>>=
library(lattice)
xyplot(1:2~1:2)
@

\end{document}


but knitr is giving me an error:

Quitting from lines 9-11 (test.Rnw)
Error in .External2(C_X11, paste("png::", filename, sep = ""), g$width,  :
  unable to start device PNG
In addition: Warning message:
In (function (filename = "Rplot%03d.png", width = 480, height = 480,  :
  unable to open connection to X11 display ''

I don't have X11 installed in this machine and I was hoping not to have to.  I am guessing that this is the problem right?

Any suggestions??

Thanks,
Ramiro


	[[alternative HTML version deleted]]