![tikz:控制文本大小和位置](https://linux22.com/image/237037/tikz%EF%BC%9A%E6%8E%A7%E5%88%B6%E6%96%87%E6%9C%AC%E5%A4%A7%E5%B0%8F%E5%92%8C%E4%BD%8D%E7%BD%AE.png)
我正在尝试使用以下方法创建流程图tikz
:
\begin{document}
\tikzstyle{decision} = [diamond, draw, fill=blue!20, minimum size=2em, text badly centered, node distance=2.5cm, inner sep=0pt]
\tikzstyle{block} = [rectangle, draw, fill=blue!20, minimum size=2em, text centered, rounded corners, minimum height=4em]
\tikzstyle{line} = [draw, very thick, color=black!50, -latex']
\tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=2.5cm, minimum height=2em]
\tikzstyle{circle} = [draw, circle,fill=red!20, node distance=2.5cm, minimum height=2em]
\tikzstyle{start} = [circle,draw,minimum size=1.2cm ,draw=blue!80, fill=blue!20,text centered]
\tikzstyle{decision answer}=[near start,color=black]
\begin{tikzpicture}[scale=2, node distance = 2cm, auto]
\tikzstyle{every node}=[midway,auto,font=\scriptsize, anchor=center]
\matrix [column sep=5mm,row sep=7mm]
{
\node [start] (start){start};\\
\node [block] (buff){Add new measurement, $y_k$ to buffer};\\
};
\end{tikzpicture}
\end{document}
我想将文本Add new measurement, $y_k$ to buffer
分成两行显示。添加时\\
出现 LaTeX 错误。
使用text width=4.5em
会导致线分割,但不是我想要的位置,然后文本不再居中。
答案1
如果您想要将一个节点置于另一个节点下方,请使用below of=<node name>
或使用 加载positioning
库\usetikzlibrary{positioning}
并使用below=<optional length> of <node name>
。
\\
在节点内部使用text width
对我来说是可行的。您的代码的一个大问题是您定义了一个circle
使用circle
内部的样式,因此递归调用自身。在这种情况下您需要使用shape=circle
,但我建议使用不同的名称。也不\tikzstyle
应该再使用。请参阅代码中的我的注释。
\documentclass{article}
\usepackage{tikz}
\begin{document}
% Use `\tikzset{name/.style={...}}` instead of `\tikzstyle{name} = [...]`
\tikzstyle{decision} = [diamond, draw, fill=blue!20, minimum size=2em, text badly centered, node distance=2.5cm, inner sep=0pt]
\tikzstyle{block} = [rectangle, draw, fill=blue!20, minimum size=2em, text centered, rounded corners, minimum height=4em]
\tikzstyle{line} = [draw, very thick, color=black!50, -latex']
\tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=2.5cm, minimum height=2em]
% Recursive Reference! Use `shape=circle` instead of `circle`.
%\tikzstyle{circle} = [draw, circle,fill=red!20, node distance=2.5cm, minimum height=2em]
\tikzstyle{start} = [circle,draw,minimum size=1.2cm ,draw=blue!80, fill=blue!20,text centered]
\tikzstyle{decision answer}=[near start,color=black]
\begin{tikzpicture}[scale=2, node distance = 2cm, auto, every node/.style={midway,auto,font=\scriptsize, anchor=center}]
\node [start] (start) {start};
\node [below of=start,block,text width=4.5cm] (buff) {Add new measurement,\\ $y_k$ to buffer};
\draw [->] (start) edge (buff);
\end{tikzpicture}
\end{document}
答案2
只需使用align=center
而不是text width=4.5em
即可使用而\\
无需设置固定宽度。
另请参阅 PGF 手册,“16.4.3 文本参数:多行文本的对齐方式和宽度”部分