Spacing bar between bars is too high in a bar plot with error bars [closed]

Question

   \documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
title = {ring enrich.},
ybar,
width=10cm,
xtick={1,2},
xticklabels={%
    before,
    after,
}]
\addplot[
   fill=blue!25,
   draw=black,
   error bars/.cd,
   y dir=both,
   y explicit
] 
table [y error=error] {
x   y       error
1   6.63    3.95
};

\addplot[
   fill=red!25,
   draw=black,
   error bars/.cd,
   y dir=both,
   y explicit
] 
table [y error=c] {
x   y       c
2   41.58   8.48
};

\end{axis}
\end{tikzpicture}
\end{document}

Answer 1

You can move the bars closer while keeping the overall plot width constant by setting enlarge x limits=<value>, where <value> specifies by what fraction you want to increase the axis range. To make the bars wider, you can set bar width=<width>:

\documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
ybar, bar shift=0pt,
bar width=1cm,
enlarge x limits=0.5,
width=10cm,
xtick={1,2},
]
\addplot[
   fill=blue!25,
   draw=black
] 
table{
x   y       error
1   6.63    3.95
};

\addplot[
   fill=red!25,
   draw=black
] 
table {
x   y       c
2   41.58   8.48
};

\end{axis}
\end{tikzpicture}
\end{document}