森林树节点

Question

我想通过在父节点之间绘制一条边来清理我的树。接下来，我想让节点0（现在是子节点）与编号节点相邻（即在“父”级别）。我该怎么做？我是否遗漏了一些简单的东西？谢谢！

\documentclass{article}
\usepackage{forest}
\begin{document}

\begin{forest}
for tree={circle, draw, l sep=20pt, s sep=5 mm}
[0, green
    [0, green]
    [1, red
        [0, green]
        [2, red
            [0, green]
            [3, red]
        ]
        [3, red
            [0, green]
            [2, red]
        ]
    ]
    [2, red
        [0, green]
        [1, red
            [0, green]
            [3, red]
        ]
        [3, red
            [0, green]
            [1, red]
        ]
    ]
    [3, red
        [0, green]
        [1, red
            [0, green]
            [2, red]        
        ]
        [2, red
            [0, green]
            [1, red]            
        ]
    ]
]
\end{forest}
\end{document}

让每个0节点与父节点处于同一级别并连接父节点。

也就是说，我希望它看起来像

0 ----- 0
       / \
0 --- 1   2 --- 0
     / \
    2   3

Answer 1

这实际上不是一个答案，但如果您想要这类东西，它可以更好地澄清。

\documentclass{article}
\usepackage{forest}
\begin{document}
\begin{forest}
for tree={circle, draw, l sep=20pt, s sep=15mm}
[0, green,alias=L1
%    [0, green]
    [1, red,alias=L2
%        [0, green]
        [2, red,alias=L3
%            [0, green]
            [3, red]
        ]
        [3, red,alias=L4
%            [0, green]
            [2, red]
        ]
    ]
    [2, red,alias=L5
%        [0, green]
        [1, red,alias=L6
%            [0, green]
            [3, red]
        ]
        [3, red,alias=L7
%            [0, green]
            [1, red]
        ]
    ]
    [3, red,alias=L8
%        [0, green]
        [1, red,alias=L9
%            [0, green]
            [2, red]        
        ]
        [2, red,alias=L10
%            [0, green]
            [1, red]            
        ]
    ]
]
\foreach \X in {1,...,10}
{\ifnum\X=1
\draw (L\X) -- ++ (-1.5cm,0) node[circle,left,draw,green]{0};
\else
\draw (L\X) -- ++ (-1cm,0) node[circle,left,draw,green]{0};
\fi}
\end{forest}
\end{document}

Answer 2

没有tikz-tree解决方案：我只是尝试使用普通 Ti 复制你的图表钾是

\documentclass[tikz,margin=3mm]{standalone}
\usetikzlibrary{calc}
\begin{document}
\begin{tikzpicture}
\node [circle,draw] (0c) at (0,0) {0};
\node [circle,draw] (1) at ($(0c)+(-120:1.5)$) {1};
\node [circle,draw] (2r) at ($(0c)+(-60:1.5)$) {2};
\node [circle,draw] (2l) at ($(1)+(-120:1.5)$) {2};
\node [circle,draw] (3) at ($(1)+(-60:1.5)$) {3};
\node [circle,draw] (0al) at ($(0c)+(-1.5,0)$) {0};
\node [circle,draw] (0bl) at ($(1)+(-1.5,0)$) {0};
\node [circle,draw] (0r) at ($(2r)+(1.5,0)$) {0};
\draw (0c)--(1)
    (0c)--(2r)
    (1)--(2l)
    (1)--(3)
    (0c)--(0al)
    (1)--(0bl)
    (2r)--(0r);
\end{tikzpicture}
\end{document}