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pgfplots，条形图，轴距

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pgfplots，条形图，轴距

我有一张以下图表，我正在尝试减小 x 轴刻度 FCC 和 Beta pi 之间的距离。有什么建议可以减少这个距离吗？

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usetikzlibrary{decorations.pathmorphing}

\begin{document}
\begin{tikzpicture}
\begin{axis}[
%legend columns=-1,
legend cell align=left,
every axis plot post/.style={/pgf/number format/fixed},
ybar=2pt,
bar width=10pt,
x=5cm,
y=4.5cm,
ymin=0,
axis on top,
%ymax=12,
xtick=data,
%xlabel=Cores,
ylabel=Peak Energy (E),
enlarge x limits=0.2,
%enlarge y limits={abs=0.5},
symbolic x coords={FCC,Beta pi},
%restrict y to domain*=0:11, % Cut values off at 14
visualization depends on=rawy\as\rawy, % Save the unclipped values
after end axis/.code={ % Draw line indicating break
\draw [ultra thick, white] (rel axis cs:0,1.05) -- (rel axis cs:1,1.05);
    },
nodes near coords={\scriptsize{\pgfmathprintnumber{\rawy}}
    },
axis lines*=left,
clip=false,
area legend
%legend style={at={(0.6,0.8)},anchor=west}
]
\addplot[fill=red!40] coordinates {(FCC,0.7) (Beta pi,0.66) };
\addplot[fill=yellow!40] coordinates {(FCC,1) (Beta pi,0.81) };
\addplot[fill=blue!40] coordinates {(FCC,0.6) (Beta pi,0.74)};
\addplot[fill=green!40] coordinates {(FCC,0.5) (Beta pi,0.7)};
\legend{x264,bodytrack,swaptions,blacksholes};
\end{axis}
\end{tikzpicture}
\end{document}

不合理的大空白区域

答案1

有不同的方法可以消除那个大块空白：

  • 减小图表的整体宽度，使条形图组更加紧密。您可以通过为 x 轴指定单位向量来实现此目的。如果您添加更多数据，图表将自动增大。
  • 保持图表的整体宽度，但将条形图组移得更近。您可以通过设置更大的值来实现这一点。您可以使用序言中的“如果有”或“更新enlarge x limits”，以轴单位设置此值。abs=1\pgfplotsset{compat=1.8}
  • 增加条形的宽度，以填充条形组之间的空白。您可以使用 键执行此操作bar width。请注意，您还必须增加值enlarge x limits，并且您可能希望通过设置 来删除条形组内的空间ybar=0pt。

\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}


\begin{document}
\parbox{14cm}{
\pgfmathsetseed{2}
{\Large \texttt{ybar}}

\begin{tikzpicture}
\begin{axis}[
    ybar,
    ymin=0,
    samples=2,
    domain=1:2,
    xtick=data
]
\addplot {rnd};
\addplot {rnd};
\end{axis}
\end{tikzpicture}\\

{\Large \texttt{ybar, x=1cm, enlarge x limits=\{abs=0.5cm\}}}

\pgfmathsetseed{2}
\begin{tikzpicture}
\begin{axis}[
    ybar,
    ymin=0,
    samples=2,
    domain=1:2,
    xtick=data,
    x=1cm,
    enlarge x limits={abs=0.5cm}
]
\addplot {rnd};
\addplot {rnd};
\end{axis}
\end{tikzpicture}\\

{\Large \texttt{ybar, enlarge x limits=\{abs=1\}}}

\pgfmathsetseed{2}
\begin{tikzpicture}
\begin{axis}[
    ybar,
    ymin=0,
    samples=2,
    domain=1:2,
    xtick=data,
    enlarge x limits={abs=1}
]
\addplot {rnd};
\addplot {rnd};
\end{axis}
\end{tikzpicture}\\

{\Large \texttt{ybar=0pt, bar width=0.45, enlarge x limits=\{abs=0.5\}}}
\pgfmathsetseed{2}

\pgfmathsetseed{2}
\begin{tikzpicture}
\begin{axis}[
    ybar=0pt,
    ymin=0,
    samples=2,
    domain=1:2,
    xtick=data,
    bar width=0.45,
    enlarge x limits={abs=0.5}
]
\addplot {rnd};
\addplot {rnd};
\end{axis}
\end{tikzpicture}
}
\end{document}

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