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方程中的 Tikz

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方程中的 Tikz

我有以下问题。我想在方程环境中使用 tikz 图片。以下是一个最小示例：

\documentclass{article}
\usepackage{tikz}
\usepackage{amsmath}

\begin{document}
Some text here.
\begin{equation*}
\left[
  \begin{tikzpicture}
  \draw[thick] (1, -1) .. controls (0.4, -1) and (0, -0.6) .. (0, 0);
  \draw[thick] (0, 0) .. controls (0, 0.6) and (0.6, 1) .. (1, 1);
  \draw[thick] (1, -0.5) .. controls (0.7, -0.5) and (0.5, -0.3) .. (0.5, 0);
  \draw[thick] (0.5, 0) .. controls (0.5, 0.3) and (0.7, 0.5) .. (1, 0.5);
  
  \draw[thick] (1, -1) .. controls (1.5, -1) and (1.75, -0.6) .. (1.75, -0.25);
  \draw[thick] (1, 0.5) .. controls (1.5, 0.5) and (1.75, 0.1) .. (1.75, -0.25);
  \draw[thick] (1, -0.5) .. controls (1.5, -0.5) and (1.75, -0.1) .. (1.75, 0.25);
  \draw[thick] (1, 1) .. controls (1.5, 1) and (1.75, 0.6) .. (1.75, 0.25);
  
  \draw[dashed] (1, -1.1) -- (1, 1.1);
  \end{tikzpicture}
  \right]
\end{equation*}
Some more text here
\end{document}

现在，如果我删除“\left[...\right]”，那么它看起来就像预期的那样：

在此处输入图片描述

但上面代码的结果对我来说看起来出乎意料：

在此处输入图片描述

看起来好像图像在实际图形下包含另一个空白，如果没有括号则不会显示。我该如何去除这个空白？

答案1

在此处输入图片描述 由于您正在加载amsmath，一种解决方案是使用环境bmatrix来获取左括号和右括号。然后您可以保留 TikZ 代码原样。

代码

\documentclass{article}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{lipsum}

\begin{document}
\lipsum[1]
\begin{equation*}
  \begin{bmatrix}
    \begin{tikzpicture}
      \draw[thick] (1, -1) .. controls (0.4, -1) and (0, -0.6) .. (0, 0);
      \draw[thick] (0, 0) .. controls (0, 0.6) and (0.6, 1) .. (1, 1);
      \draw[thick] (1, -0.5) .. controls (0.7, -0.5) and (0.5, -0.3) .. (0.5, 0);
      \draw[thick] (0.5, 0) .. controls (0.5, 0.3) and (0.7, 0.5) .. (1, 0.5);
      
      \draw[thick] (1, -1) .. controls (1.5, -1) and (1.75, -0.6) .. (1.75, -0.25);
      \draw[thick] (1, 0.5) .. controls (1.5, 0.5) and (1.75, 0.1) .. (1.75, -0.25);
      \draw[thick] (1, -0.5) .. controls (1.5, -0.5) and (1.75, -0.1) .. (1.75, 0.25);
      \draw[thick] (1, 1) .. controls (1.5, 1) and (1.75, 0.6) .. (1.75, 0.25);
      
      \draw[dashed] (1, -1.1) -- (1, 1.1);
    \end{tikzpicture}   
  \end{bmatrix}
\end{equation*}
\lipsum[2]
\end{document}

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