编译树形图代码后，树的右侧部分被截断了。我已经使用了 \centering 函数，但这并不能解决问题。我不知道该如何修复它。谢谢大家
\documentclass[a4paper,landscape] {article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{arrows,automata,calc,shapes,backgrounds}
\usepackage{amsmath, amssymb}
\tikzset{
treenode/.style = {align=center, inner sep=0pt, text centered,
font=\sffamily},
arn/.style = {treenode, circle, black, font=\sffamily\bfseries, draw=black,
fill=white, text width=4.1ex},
arnrec/.style = {treenode, rectangle, black, font=\sffamily\bfseries, draw=black,
fill=white, text width=7.5ex,minimum width=4.0ex, minimum height=4.0ex},
arnsmall/.style = {treenode, circle, black, font=\sffamily\bfseries, draw=black,
fill=white, text width=1.5ex},
}
\begin{document}
\centering
\tiny %font size
\begin{tikzpicture}[shorten >=1pt,scale=0.85]
\node [sibling distance=10mm,level distance = 0.5cm] [arn] {start}
child{[sibling distance=6.5cm,level distance = 3cm] node [arn] {249}
child{ [sibling distance=2.0cm, level distance = 2cm] node [arn] {281}
child{ [sibling distance=2cm] node [arn] {290}
child{[] node [arnrec] {z=312}
edge from parent node[below]
{$x_{34}=1$}
}
child{[] node [arnrec] {z=301}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{21}=1$} %label
}
child{ [sibling distance=2cm] node [arn] {301}
edge from parent node[above]
{$x_{23}=1$} %label
}
child{ [sibling distance=3cm] node [arn] {312}
edge from parent node[above]
{$x_{24}=1$} %label
}
edge from parent node[above left]
{$x_{12}=1$} %label
}
child{ [sibling distance=3cm,level distance = 2cm] node [arn] {249}
child{ [black, sibling distance=2cm] node [arn] {267}
child{[] node [arnrec] {z=312}
edge from parent node[below]
{$x_{34}=1$}
}
child{[] node [arnrec] {z=301}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{21}=1$} %label
}
child{ [sibling distance=2cm] node [arn] {276}
child{[] node [arnrec] {z=299}
edge from parent node[below]
{$x_{32}=1$}
}
child{[] node [arnrec] {z=325}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{24}=1$} %label
}
child{ [black, sibling distance=3cm] node [arn] {289}
edge from parent node[above]
{$x_{25}=1$} %label
}
edge from parent node[above]
{$x_{13}=1$} %label
}
child{ [sibling distance=2cm, level distance=2cm] node [arn] {287}
child{ [sibling distance=2cm] node [arn] {290}
edge from parent node[above]
{$x_{21}=1$} %label
}
child{ [sibling distance=2cm] node [arn] {301}
child{[] node [arnrec] {z=299}
edge from parent node[below]
{$x_{32}=1$}
}
child{[] node [arnrec] {z=325}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{23}=1$} %label
}
child{ [sibling distance=3cm] node [arn] {312}
edge from parent node[above]
{$x_{24}=1$} %label
}
edge from parent node[above]
{$x_{14}=1$} %label
}
child{ [sibling distance=3cm, level distance = 2cm] node [arn] {278}
child{ [sibling distance=2cm] node [arn] {296}
child{[] node [arnrec] {z=312}
edge from parent node[below]
{$x_{34}=1$}
}
child{[] node [arnrec] {z=301}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{21}=1$} %label
}
child{ [sibling distance=2cm] node [arn] {294}
child{[] node [arnrec] {z=299}
edge from parent node[below]
{$x_{32}=1$}
}
child{[] node [arnrec] {z=325}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{23}=1$} %label
}
child{ [sibling distance=2cm] node [arn] {298}
child{[] node [arnrec] {z=299}
edge from parent node[below]
{$x_{32}=1$}
}
child{[] node [arnrec] {z=325}
edge from parent node[below]
{$x_{35}=1$}
}
edge from parent node[above]
{$x_{24}=1$} %label
}
edge from parent node[above right]
{$x_{15}=1$} %label
}
edge from parent node[above right]
{} %label
}
;
\end{tikzpicture}
\end{document}
答案1
答案2
forest除了 之外，我还可以推荐其他东西吗standalone？它允许您更紧凑地指定树，而无需过多减小字体大小。（我\tiny仅将其用于边缘标签和\small节点。）此外，您可以自动放置标签并使其更易读，并减少显式标记形式的重复量。
在以下示例中
my edge label={<label text>}用于指定自动放置的边缘标签。如果您愿意，可以进一步自动化此操作。z={<value>}用于创建一个“z=”终端节点，自动改变形状并按照所需的格式排版值。
代码：
\documentclass[tikz,border=5pt,multi] {standalone}
\usepackage[utf8]{inputenc}
\usepackage{forest}
\begin{document}
\begin{forest}
my edge label/.style={
if={greater(n(),n_children("!u")/2)}{
if={equal(n(),int((n_children("!u")+1)/2))}{
edge label={node [pos=.6] {#1}},
}{
edge label={node [pos=.4, right] {#1}},
},
}{
edge label={node [pos=.4, left] {#1}}
},
},
z/.style={
content={z=#1},
rectangle
},
for tree={
inner sep=1pt,
text centered,
align=center,
font=\sffamily\bfseries\small,
draw,
circle,
edge={font=\tiny},
if n children=3{calign=child, calign child=2}{},
s sep+=5pt,
l sep+=15pt,
}
[start
[249
[281, my edge label={$x_{12}=1$}
[290, my edge label={$x_{21}=1$}
[, z=312, my edge label={$x_{34}=1$}]
[, z=301, my edge label={$x_{35}=1$}]
]
[301, my edge label={$x_{23}=1$}
]
[312, my edge label={$x_{24}=1$}
]
]
[249, my edge label={$x_{13}=1$}
[267, my edge label={$x_{21}=1$}
[, z=312, my edge label={$x_{34}=1$}]
[, z=301, my edge label={$x_{35}=1$}]
]
[276, my edge label={$x_{24}=1$}
[, z=299, my edge label={$x_{32}=1$}]
[, z=325, my edge label={$x_{35}=1$}]
]
[289, my edge label={$x_{25}=1$}
]
]
[287, my edge label={$x_{14}=1$}
[290, my edge label={$x_{21}=1$}
]
[301, my edge label={$x_{23}=1$}
[, z=299, my edge label={$x_{32}=1$}]
[, z=325, my edge label={$x_{35}=1$}]
]
[312, my edge label={$x_{24}=1$}
]
]
[278, my edge label={$x_{15}=1$}
[296, my edge label={$x_{21}=1$}
[, z=312, my edge label={$x_{34}=1$}]
[, z=301, my edge label={$x_{35}=1$}]
]
[294, my edge label={$x_{23}=1$}
[, z=299, my edge label={$x_{32}=1$}]
[, z=325, my edge label={$x_{35}=1$}]
]
[298, my edge label={$x_{24}=1$}
[, z=299, my edge label={$x_{32}=1$}]
[, z=325, my edge label={$x_{35}=1$}]
]
]
]
]
\end{forest}
\end{document}
