Here’s an example:
\documentclass{article}
\usepackage{pgfplots}
\usepackage{filecontents}
\begin{filecontents}{testdata.dat}
0 1 1.2 0.4 1.5 0.2
1 2 2.3 1.5 2.7 1
2 0.7 1.4 0.5 1.9 0.1
\end{filecontents}
\pgfplotsset{
box plot/.style={
/pgfplots/.cd,
black,
only marks,
mark=-,
mark size=1em,
/pgfplots/error bars/.cd,
y dir=plus,
y explicit,
},
box plot box/.style={
/pgfplots/error bars/draw error bar/.code 2 args={%
\draw ##1 -- ++(1em,0pt) |- ##2 -- ++(-1em,0pt) |- ##1 -- cycle;
},
/pgfplots/table/.cd,
y index=2,
y error expr={\thisrowno{3}-\thisrowno{2}},
/pgfplots/box plot
},
box plot top whisker/.style={
/pgfplots/error bars/draw error bar/.code 2 args={%
\pgfkeysgetvalue{/pgfplots/error bars/error mark}%
{\pgfplotserrorbarsmark}%
\pgfkeysgetvalue{/pgfplots/error bars/error mark options}%
{\pgfplotserrorbarsmarkopts}%
\path ##1 -- ##2;
},
/pgfplots/table/.cd,
y index=4,
y error expr={\thisrowno{2}-\thisrowno{4}},
/pgfplots/box plot
},
box plot bottom whisker/.style={
/pgfplots/error bars/draw error bar/.code 2 args={%
\pgfkeysgetvalue{/pgfplots/error bars/error mark}%
{\pgfplotserrorbarsmark}%
\pgfkeysgetvalue{/pgfplots/error bars/error mark options}%
{\pgfplotserrorbarsmarkopts}%
\path ##1 -- ##2;
},
/pgfplots/table/.cd,
y index=5,
y error expr={\thisrowno{3}-\thisrowno{5}},
/pgfplots/box plot
},
box plot median/.style={
/pgfplots/box plot
}
}
\begin{document}
\begin{tikzpicture}
\begin{axis} [enlarge x limits=0.5,xtick=data]
\addplot [box plot median] table {testdata.dat};
\addplot [box plot box] table {testdata.dat};
\addplot [box plot top whisker] table {testdata.dat};
\addplot [box plot bottom whisker] table {testdata.dat};
\end{axis}
\end{tikzpicture}
\end{document}
.
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