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## 编译环境
操作系统
* [x ] Windows 7/8/10
* [ ] macOS
* [ ] Linux
`若需勾选，请把[ ]改成[x]`
Tex发行版
* [x] TexLive `年份`
* [ ] MikTeX `版本号`
* [ ] CTeX
`若需勾选，请把[ ]改成[x]`
## 我的问题
```
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{trees}
\begin{document}
\begin{tikzpicture}[level distance=2cm,
level 1/.style={sibling distance=4cm,sibling angle=30},
level 2/.style={sibling distance=4cm,sibling angle=30}]
\node {root}
child { node[align=center] {A.M\\(523,2.9291,3.6)}
%A的第一个孩子C
child {node [align=center]{C.L\\(32,1.0412,1.8)}
child {node[align=center]{D.M\\(32,0.3378,0.4)}}
child {node[align=center]{B.M\\(137,0.7034,1)}
child {node[align=center]{F.M\\(137,0.7034,0.4)}}
}
}
%A的第二个孩子B
child {node [align=center]{B.M\\(210,0.7790,1.4)}
child {node[align=center] {E.M\\(120,0.3660,0.8)}
child {node[align=center] {F.M\\(120,0.3660,0,4)} }
}
child {node[align=center] {D.M\\(90,0.4129,0.8)}}
}
%A的第三个孩子E
child {node [align=center]{E.M\\(150,1.109,0.8)}
child {node[align=center] {F.M\\(96,0.51,1)}}
child {node[align=center] {D.M\\(54,0.5990,0,4)}}
}
}
child {node[align=center] {C.L\\(59,1.3121,1.2)}
child {node [align=center]{ B.M\\(27,0.8601,0.4)}}
child {node[align=center]{E.M\\(32,0.452,0.8)}}
};
\end{tikzpicture}
\end{document}
```
2 回答
4
以后注意使用代码块，这样的MWE是没法用的。
你的主要问题是各级节点的水平距离不合理，可慢慢调整到合适的大小：
```tex
\begin{tikzpicture}[level distance=2cm,
level 1/.style={sibling distance=8cm,sibling angle=40},
level 2/.style={sibling distance=7cm,sibling angle=40},
level 3/.style={sibling distance=4cm,sibling angle=40},
]
```
1
也可以使用宏包`forest`，示例如下
```tex
\documentclass[tikz, border=2mm]{standalone}
\usepackage{forest}
\begin{document}
\begin{forest}
[root, for tree={l=2cm}, circle, draw
[{A.M\\(523, 2.9291, 3.6)}, s sep=1cm
[{C.L\\(32,1.0412,1.8)}, for tree={draw, fill=teal, line width=1pt}
[{D.M\\(32,0.3378,0.4)}]
[{B.M\\(137,0.7034,1)}
[{F.M\\(137,0.7034,0.4)}]
]
]
[{B.M\\(210,0.7790,1.4)}, for tree={fill=red!20}
[{E.M\\(120,0.3660,0.8)}
[{F.M\\(120,0.3660,0,4)}]
]
[{D.M\\(90,0.4129,0.8)}]
]
[{E.M\\(150,1.109,0.8)}
[{F.M\\(96,0.51,1)}]
[{D.M\\(54,0.5990,0,4)}
[{C.L\\(59,1.3121,1.2)}, for tree={orange}
[{B.M\\(27,0.8601,0.4)}]
[{E.M\\(32,0.452,0.8)}]
]
]
]
]
]
\end{forest}
\end{document}
```
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