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准备好的箱线图的图例中的系列副本

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准备好的箱线图的图例中的系列副本

当我向图中添加图例条目时boxplot prepared，图例中会出现与箱线图完全相同的副本（可能很大！）。我该如何解决这个问题？作为一种解决方法，我目前正在添加area legend以覆盖图例图像的样式。

MWE 如下：

\documentclass[tikz]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\usetikzlibrary{pgfplots.statistics}
\begin{document}
    \begin{tikzpicture}
        \begin{axis}[
            boxplot/draw direction=y,
            boxplot/box extend=0.36450000000000005,
            xmin=0.5,
            xmax=1.5,
            legend style={
                legend pos=outer north east,
            }
        ]
            \addplot[
                fill=blue!50!white!50!white,
                draw=blue!50!white,
                forget plot,
                boxplot prepared={
                    lower whisker=0.47544910179640715,
                    lower quartile=0.4670588235294117,
                    median=0.45895953757225433,
                    upper quartile=0.45895953757225433,
                    upper whisker=0.1784269662921348,
                    draw position=0.7975
                },
            ] coordinates {};
            \addplot[
                fill=blue!50!white,
                draw=blue,
                boxplot prepared={
                    lower whisker=0.5753623188405796,
                    lower quartile=0.5631205673758864,
                    median=0.5591549295774647,
                    upper quartile=0.5438356164383561,
                    upper whisker=0.18859857482185272,
                    draw position=1.2025000000000001
                },
            ] coordinates {};
            \addlegendentry{Series 1}
        \end{axis}
    \end{tikzpicture}
\end{document}

带有超大图例条目的箱线图结果

答案1

也许不是最漂亮的，但可以创建自定义boxplot legend样式并将其应用于axis：

在此处输入图片描述

\documentclass[tikz]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\usetikzlibrary{pgfplots.statistics}

\pgfplotsset{
/pgfplots/boxplot legend/.style={
   legend image code/.code={
     \draw [|-|,##1] (0,2mm) --
         node[rectangle,minimum size=2.5mm,draw,fill,##1]{}
        (0,7mm);
    }
  }
}


\begin{document}
    \begin{tikzpicture}
        \begin{axis}[
            boxplot/draw direction=y,
            boxplot/box extend=0.36450000000000005,
            xmin=0.5,
            xmax=1.5,
            legend style={
                legend pos=outer north east,
            },
            boxplot legend % <-- added
        ]
            \addplot[
                fill=blue!50!white!50!white,
                draw=blue!50!white,
                forget plot,
                boxplot prepared={
                    lower whisker=0.47544910179640715,
                    lower quartile=0.4670588235294117,
                    median=0.45895953757225433,
                    upper quartile=0.45895953757225433,
                    upper whisker=0.1784269662921348,
                    draw position=0.7975
                },
            ] coordinates {};
            \addplot[
                fill=blue!50!white,
                draw=blue,
                boxplot prepared={
                    lower whisker=0.5753623188405796,
                    lower quartile=0.5631205673758864,
                    median=0.5591549295774647,
                    upper quartile=0.5438356164383561,
                    upper whisker=0.18859857482185272,
                    draw position=1.2025000000000001
                },
            ] coordinates {};
            \addlegendentry{Series 1}
        \end{axis}
    \end{tikzpicture}
\end{document}

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