Graphics, Figures & Tables ⇒ Greek Symbols in Title of Plot

[eljee]

Hi,

a week or so ago I started using gnuplottex and fell head over heels for it. Now however, we entered a lover's spat.

I'm trying to insert a Greek symbol/letter in my plots but can't seem to get it to work. Is there someone here who has the experience to help me out? I have an example of the code I used below.

Regards,

Eljee


P.S. Not sure whether to mention it or not. I'm using TeX-Live on a Linux Mint 13 system. Using the compiler with a --shell-escape, dvips and ps2pdf to create my files.

Code: Select all

\documentclass{article}
\usepackage{gnuplottex}
\usepackage{graphicx}

\begin{document}
  \begin{figure}[!ht]
    \begin{gnuplot}[scale=0.7, terminal=epslatex]
      set title "My title with a $\pi$ or {/Symbol p} symbol."
      plot sin(x)
    \end{gnuplot}
    \caption{Insert a caption for good measure. Symbols work just fine here $\lambda$.}
  \end{figure}
\end{document}

[Johannes_B]

A quick search led me to the solution:

Code: Select all

\documentclass{article}
\usepackage{gnuplottex}
\usepackage{graphicx}

\begin{document}
  \begin{figure}[!ht]
    \begin{gnuplot}[scale=0.7, terminal=epslatex]
      set title "My title with a $\\pi{}$ or {/Symbol p} symbol."
      plot sin(x)
    \end{gnuplot}
    \caption{Insert a cation for good measure. Symbols work just fine here $\lambda{}$.}
  \end{figure}
\end{document}

The backslash needs to be escaped in Gnuplot.

[eljee]

Thanks a lot Johannes,

Of course I did search for a solution online. I must have used the wrong search query. I can imagine that if I ever find another problem with the mixing of either Gnuplot code in LaTeX or the other way around these escapes will work like a charm!

[localghost]

You can evade such problems by using pgfplots instead. The output of the below code sample is attached.

Code: Select all

\documentclass[11pt]{standalone}
\usepackage[T1]{fontenc}
\usepackage{pgfplots}

\pgfplotsset{
  compat=newest,
  xlabel near ticks,
  ylabel near ticks
}

\begin{document}
  \begin{tikzpicture}
    \begin{axis}[
      title={My title with a $\pi$ symbol},
      tick label style={font=\scriptsize}
    ]
      \addplot[domain=0:2*pi,samples=100] {sin(deg(x))};
      \addlegendentry{Sine curve};
    \end{axis}
  \end{tikzpicture}
\end{document}

The package can use Gnuplot as back-end if necessary. For details please refer to the package manual.


Thorsten

[shadgrind]

I'm trying to insert a Greek symbol/letter in my plots but can't seem to get it to work.

Actually, all you had to do was change the double-quotes to single-quotes when you set the title:

Code: Select all

\documentclass{article}
\usepackage{gnuplottex}
\usepackage{graphicx}

\begin{document}
  \begin{figure}[!ht]
    \begin{gnuplot}[scale=0.7, terminal=epslatex]
      set title 'My title with a $\pi$ symbol.'
      plot sin(x)
    \end{gnuplot}
    \caption{Insert a caption for good measure. Symbols work just fine here $\lambda$.}
  \end{figure}
\end{document}