example-7.9.tex

\documentclass{article}

%% Denote paragraphs with vertical space rather than indenting (not critical)
\usepackage{parskip}

%% Support for URL in introductory text (not needed for main example)
\usepackage{url}

%% *** Enable PGFPLOTS (automatically enables TikZ) ***
\usepackage{pgfplots}

%% Prevent some PGFPLOTS messages (not critical)
\pgfplotsset{compat=1.18,compat/show suggested version=false}


\begin{document}

%% Introductory Text
Example 7.9 from the book\\
\emph{Unlocking LaTeX Graphics: A Concise Guide to Ti$k$Z/PGF and PGFPLOTS}.\\
For more information, visit \url{https://latex-graphics.com}.
\par\bigskip

%% *** START OF EXAMPLE CODE ***
\begin{tikzpicture}
  \begin{axis}[scale only axis,
      width=3.2cm, height=3cm,
      legend entries={Data 1, Data 2},
      xtick={0,1,...,5}, ytick distance=1]
    \addplot[blue,mark=+] table{data.dat};
    \addplot[red,mark=o] table[col sep=comma]{points.csv};
  \end{axis}
\end{tikzpicture}
%% *** END OF EXAMPLE CODE ***

\end{document}