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如何在乳胶中的 pgfplots 中的散点图中的气泡中添加浮动标签？

tag-icon • tag-icon tikz-pgf pgfplots nodes-near-coords
如何在乳胶中的 pgfplots 中的散点图中的气泡中添加浮动标签？

我正在尝试在散点图上添加标签，但问题是散点图太拥挤了。我希望我的标签是浮动的，即尽可能找到位置。

我尝试了这个代码：

\begin{figure}
    \centering
    \begin{tikzpicture}
  \begin{axis}[
      width=4.5in,
      height=3.5in,
      xtick={0,50,100,150,200,250,300,350,400},
      xlabel=Length,
ylabel=Info,
legend pos=north west,
  ]
  \addplot[%
      scatter=true,
      only marks,
      mark=*,
      point meta=explicit,
      visualization depends on = {85*\thisrow{Val} \as \perpointmarksize},
      scatter/@pre marker code/.append style={/tikz/mark 
size=\perpointmarksize},
    nodes near coords*={\Label},
    visualization depends on={value \thisrow{label} \as \Label}
    visualization depends on={value \thisrow{anchor}\as\myanchor},
    every node near coord/.append style={anchor=\myanchor},
  ] table [y={Info},x={Length},meta index=2] {
Info Length Val label anchor
361.805 391.28  0.006538731 {Scrabble} south
19.575  141.25  0.009144791 {Duolingo (Winning Streak)} south
28  141.25  0.010245367 {Duolingo (Badge)} north
250 208 0.011528558 {Go} south
80  115 0.016548609 {Shogi} south
68.6    106.2   0.017291188 {DotA} south
54.86   96.47   0.018028981 {Table Tennis} south
36.38   82.01   0.01903259  {Basketball} south
2.64    22  0.019163815 {Soccer} south
35  80  0.019300851 {Chess} south    
46.34   79.34   0.020997681 {Badminton} south
242.3043    25.52174    0.093424709 {Baghchal} south
9   9   0.106026945 {Tic-tac-toe} north

};
  \end{axis}
  \end{tikzpicture}
  \caption{multiple games}
 \label{fig:f4}
\end{figure}

所有标签都太拥挤了，因为图中气泡所在的区域很拥挤。我尝试使用锚点，但当我使用锚点时，气泡的大小会变得恒定。对我来说，保持大小很重要，因为大小代表第三个值。

我想让他们找到自己的空间。可以吗？如果可以，我该怎么做？

答案1

当您anchor通过“定位”进行更改时，即更改anchor=south为，above您可以进一步向该“定位”添加移位。这解决了您的问题，即标签不再与气泡相交，但标签仍然相互相交（因为大多数气泡都在非常小的区域内）。为了进一步改善这一点，我在表格中添加了另一列，您可以在其中指定额外的偏移量。如果这是一个选项，您可以根据需要更改值。（您还可以向标签添加换行符，这可能有助于更轻松地找到标签不相交的偏移量。）

% used PGFPlots v1.16
\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
    \pgfplotsset{
        compat=1.3,
    }
\begin{document}
\begin{tikzpicture}
    \begin{axis}[
        width=4.5in,
        height=3.5in,
        xlabel=Length,
        ylabel=Info,
        % (it is simpler to use `xtick distance`)
%        xtick={0,50,100,150,200,250,300,350,400},
        xtick distance=50,
    ]
        \addplot[
            scatter=true,
            only marks,
            mark=*,
            point meta=explicit,
            visualization depends on={85*\thisrow{Val} \as \perpointmarksize},
            scatter/@pre marker code/.append style={
                /tikz/mark size=\perpointmarksize,
            },
            nodes near coords*={\Label},
            visualization depends on={value \thisrow{label} \as \Label},
%            visualization depends on={value \thisrow{anchor} \as \myanchor},
            visualization depends on={value \thisrow{Pos} \as \myPos},
            visualization depends on={\thisrow{addOffset} \as \myOffset},
            visualization depends on={\thisrow{Val} \as \myval},
            every node near coord/.append style={
                font=\tiny,
%                anchor=\myanchor,
                \myPos=\perpointmarksize pt + \myOffset pt,
            },
        ] table [y={Info},x={Length},meta index=2] {
            Info    Length  Val         label                       anchor  Pos     addOffset
            361.805 391.28  0.006538731 {Scrabble}                  south   above   0
            19.575  141.25  0.009144791 {Duolingo (Winning Streak)} south   above   0
            28      141.25  0.010245367 {Duolingo (Badge)}          north   below   0
            250     208     0.011528558 {Go}                        south   above   0
            80      115     0.016548609 {Shogi}                     south   above   0
            68.6    106.2   0.017291188 {DotA}                      south   above   0
            54.86   96.47   0.018028981 {Table Tennis}              south   above   0
            36.38   82.01   0.01903259  {Basketball}                south   above   0
            2.64    22      0.019163815 {Soccer}                    south   above   0
            35      80      0.019300851 {Chess}                     south   above   0
            46.34   79.34   0.020997681 {Badminton}                 south   above   0
            242.304 25.5217 0.093424709 {Baghchal}                  south   above   0
            9       9       0.106026945 {Tic-tac-toe}               north   below   0
        };
  \end{axis}
\end{tikzpicture}
\end{document}

该图显示了上述代码的结果

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