PGFPLOTS: simple example

pgfplotsexample.tex

\documentclass[a4paper]{article}

% for dvipdfm:
%\def\pgfsysdriver{pgfsys-dvipdfm.def}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}% <-- moves axis labels near ticklabels (respects tick label widths)

\begin{document}
\begin{figure}
  \centering
  \begin{tikzpicture}
  \begin{loglogaxis}
    \addplot coordinates {
      (1,1)
      (16,16)
      (32,64)
    };
  \end{loglogaxis}
  \end{tikzpicture}
  \caption{A small example}
\end{figure}

\begin{figure}
  \centering
  \begin{tikzpicture}
    \begin{loglogaxis}[
      xlabel=Cost,
      ylabel=Error]
    \addplot coordinates {
      (5,     8.31160034e-02)
      (17,    2.54685628e-02)
      (49,    7.40715288e-03)
      (129,   2.10192154e-03)
      (321,   5.87352989e-04)
      (769,   1.62269942e-04)
      (1793, 4.44248889e-05)
      (4097, 1.20714122e-05)
      (9217, 3.26101452e-06)
    };
    \addplot coordinates {
      (7,     8.47178381e-02)
      (31,    3.04409349e-02)
      (111,   1.02214539e-02)
      (351,   3.30346265e-03)
      (1023,  1.03886535e-03)
      (2815,  3.19646457e-04)
      (7423,  9.65789766e-05)
      (18943, 2.87339125e-05)
      (47103, 8.43749881e-06)
    };
    \legend{Case 1,Case 2}
    \end{loglogaxis}
  \end{tikzpicture}
  \caption{A larger example}
\end{figure}

\end{document}