☰

如何在 tikzpicture 的一行上方书写

tag-icon • tag-icon tikz-pgf tikz-styles text-decorations
如何在 tikzpicture 的一行上方书写

我怎样才能在该 tikzpicture 的蓝线上方写字？

\begin{tikzpicture}[
    scale=5,
    IS/.style={blue, thick},
    LM/.style={red, thick},
    axis/.style={very thick, ->, >=stealth', line join=miter},
    important line/.style={thick}, dashed line/.style={dashed, thin},
    every node/.style={color=black},
    dot/.style={circle,fill=black,minimum size=4pt,inner sep=0pt,
        outer sep=-1pt},
]
% axis
\draw[axis,-] (2.5,0) node(xline)[right] {$O_B$} -|
                (0,2.5) node(yline)[left] {$w$};
\draw[axis,-](2.5,0)--(2.5,2.5);
 \node (0,0) [left]{$O_A$};
  \draw[-, Blue] (0,2)--(1.4,.6)
\draw[-, Blue] (2.5,2)--(.8,.6);
   \draw[dashed] (0,.87) node[left] {$w_0^*$}--(2.5,.87) node[right] {$w_0^*$};
  \node[dot,label=above:$\epsilon_0$] at (1.13,.87) (int1) {};
\draw[dashed] (1.13,0) node[below]{$E_0$}--(1.13,0.87);
\end{tikzpicture}

上述代码的运行结果： 在此处输入图片描述

我想要一些类似这张图片中的“ABC”和“CBA”的东西。

这张照片

答案1

node[pos=0.5,sloped,above]按照我的以下代码使用。说明：

  • pos=0.5将节点置于路径中间，
  • sloped旋转文本，使其与插入位置的路径斜率平行，
  • above是不言自明的。

请注意，您的代码在第 3 条命令末尾缺少一个分号draw。

在此处输入图片描述

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{arrows}

\begin{document}
\begin{tikzpicture}[%
    scale=5,%
    IS/.style={blue, thick},%
    LM/.style={red, thick},%
    axis/.style={very thick, ->, >=stealth', line join=miter},%
    important line/.style={thick}, dashed line/.style={dashed, thin},%
    every node/.style={color=black},%
    dot/.style={circle,fill=black,minimum size=4pt,inner sep=0pt,%
        outer sep=-1pt},%
]
% axis
    \draw[axis,-]   (2.5,0) node(xline)[right]  {$O_B$} -|
                    (0,2.5) node(yline)[left]   {$w$};
    \draw[axis,-]   (2.5,0) --  (2.5,2.5);
    \node (0,0) [left]{$O_A$};
    \draw[-, blue] (0,2)--(1.4,.6) node[pos=0.5,sloped,above] {$foo$};
    \draw[-, blue] (2.5,2)--(.8,.6) node[pos=0.5,sloped,above] {$bar$};
    \draw[dashed] (0,.87) node[left] {$w_0^*$} -- (2.5,.87) node[right] {$w_0^*$};
    \node[dot,label=above:$\epsilon_0$] at (1.13,.87) (int1) {};
    \draw[dashed] (1.13,0) node[below]{$E_0$}--(1.13,0.87);
\end{tikzpicture}
\end{document}

相关内容