![框图中的问题](https://linux22.com/image/307099/%E6%A1%86%E5%9B%BE%E4%B8%AD%E7%9A%84%E9%97%AE%E9%A2%98.png)
我有一个关于在 Latex 中制作框图的问题。我的代码生成了一个框图(左侧),但是,我希望连接看起来像示例图(右侧)。该怎么做?
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes,shadows,arrows}
\begin{document}
%\tikzstyle{decision}{line}=[draw,-latex']
\tikzstyle{line}=[draw,-stealth,thick]
\tikzstyle{block}=[draw,rectangle,fill=blue!50, text width=8em, text centered, minimum height=15mm, node distance=10em]
\begin{tikzpicture}
\node [block] (start) {START};
\node [block, below of=start] (end) {END};
\node [block, left of=end] (another) {ANOTHER};
\node [block, right of=end] (another1) {ANOTHER1};
%arrows
\path [line] (start) -- (end);
\path [line] (start) -| (another);
\path [line] (start) -| (another1);
\end{tikzpicture}
\end{document}
答案1
start
您可以在从到 的路径中间放置一个辅助坐标end
:
\path [line] (start) -- coordinate[midway] (aux) (end);
然后使用此坐标在该位置弯曲箭头:
\path [line] (start) -- (aux) -| (another);
\path [line] (start) -- (aux) -| (another1);
完整示例:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes,shadows,arrows,positioning}
\tikzset{
line/.style={draw,-stealth,thick},
block/.style={draw,rectangle,fill=blue!50, text width=8em, text centered, minimum height=15mm,}
}
\begin{document}
\begin{tikzpicture}
\node [block] (start) {START};
\node [block, below = of start] (end) {END};
\node [block, left = of end] (another) {ANOTHER};
\node [block, right = of end] (another1) {ANOTHER1};
%arrows
\path [line] (start) -- coordinate[midway] (aux) (end);
\path [line] (start) -- (aux) -| (another);
\path [line] (start) -- (aux) -| (another1);
\end{tikzpicture}
\end{document}
评论
我把旧的
\tikzstyle
语法改为更方便的\tikzset
语法。我使用定位库将弃用的
of=
语法更改为更合适的语法。=of
由于你的图是一棵树,强大的forest
包(基于 TikZ 构建)可能会引起您的兴趣;这是使用森林的相同图表:
\documentclass{article}
\usepackage{forest}
\usetikzlibrary{shapes,shadows,arrows,positioning}
\tikzset{
line/.style={draw,-stealth,thick},
block/.style={draw,rectangle,fill=blue!50, text width=8em, text centered, minimum height=15mm,}
}
\begin{document}
\begin{forest}
for tree={
block,
parent anchor=south,
child anchor=north,
l sep=20pt,
edge path={
\noexpand\path[\forestoption{edge}]
(!u.parent anchor) -- +(0,-10pt) -|
(.child anchor)\forestoption{edge label};
},
edge={->,>=latex}
}
[START
[ANOTHER
]
[END
]
[ANOTHER1
]
]
\end{forest}
\end{document}