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向直方图添加图例

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向直方图添加图例

我创建了以下直方图，但所有标签都乱了。

\documentclass{standalone}
\usepackage[T1]{fontenc}
\usepackage{pgfplots}

\pgfplotsset{
  compat=newest,
  xlabel near ticks,
  ylabel near ticks
}

\begin{document}
  \begin{tikzpicture}[font=\small]
    \begin{axis}[
      ybar,
      bar width=20pt,
      ymin=0,
      %ymax=100,
      xtick=data,
      axis x line=bottom,
      axis y line=left,
      enlarge x limits=0.2,
      symbolic x coords={First Variable, Second Variable, Third Variable, Fourth Variable, Fifth Variable},
      xticklabel style={anchor=base,yshift=-\baselineskip},
      nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\%}
    ]

      \addplot[fill=orange,fill opacity=0.5, text opacity=1] coordinates {
        (First Variable,42)
        (Second Variable,36)
        (Third Variable,23)
        (Fourth Variable,22)
        (Fifth Variable,61)
      };
  \end{axis}
  \end{tikzpicture}
\end{document}

然后我缩短了标签以使其更适合它们，但这需要我添加图例。但图例只给出了一个标签，而不是其他标签。我需要有关如何安装标签或解释图例中标签的帮助。

\documentclass{standalone}
\usepackage[T1]{fontenc}
\usepackage{pgfplots}

\pgfplotsset{
  compat=newest,
  xlabel near ticks,
  ylabel near ticks
}

\begin{document}
  \begin{tikzpicture}[font=\small]
    \begin{axis}[
      ybar,
      bar width=20pt,
      ymin=0,
      %ymax=100,
      xtick=data,
      axis x line=bottom,
      axis y line=left,
      enlarge x limits=0.2,
      symbolic x coords={A, B, C, D, E},
      xticklabel style={anchor=base,yshift=-\baselineskip},
      nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\%}
    ]

      \addplot[fill=orange,fill opacity=0.5, text opacity=1] coordinates {
        (A,42)
        (B,36)
        (C,23)
        (D,22)
        (E,61)
      };
\legend{A=First Variable, B=Second Variable, C=Third Variable, D=Fourth Variable,E=Fifth Variable}
  \end{axis}
  \end{tikzpicture}
\end{document}

答案1

您可能不需要缩短标签。如果将标签添加text width=1.3cm到，xticklabel style标签将跨越多行。如果您还通过设置使图表稍微宽一些，则会有更多的空间。使用的确切长度将取决于您的具体情况，因此请根据需要width调整width和设置。text width

在此处输入图片描述

\documentclass{standalone}
\usepackage[T1]{fontenc}
\usepackage{pgfplots}

\pgfplotsset{
  compat=newest,
  xlabel near ticks,
  ylabel near ticks
}

\begin{document}
  \begin{tikzpicture}[font=\small]
    \begin{axis}[
      width=10cm, % increase width of diagram a bit
      height=6cm,
      ybar,
      bar width=20pt,
      ymin=0,
      %ymax=100,
      xtick=data,
      axis x line=bottom,
      axis y line=left,
      enlarge x limits=0.2,
      symbolic x coords={First Variable, Second Variable, Third Variable, Fourth Variable, Fifth Variable},
      xticklabel style={
         anchor=base,
         yshift=-\baselineskip,
         text width=1.3cm, % means longer labels will be broken across multiple lines
         align=center, % center align
         % font=\scriptsize % if necessary, you could reduce the font size further
      },
      nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\%}
    ]

      \addplot[fill=orange,fill opacity=0.5, text opacity=1] coordinates {
        (First Variable,42)
        (Second Variable,36)
        (Third Variable,23)
        (Fourth Variable,22)
        (Fifth Variable,61)
      };
  \end{axis}
  \end{tikzpicture}
\end{document}

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