pgfplots 选项 'compat=newest' 导致交叉点崩溃

Question

直到昨天，我才能定期使用报告的代码这个答案在两条线的交点处画一个圆。今天，完全相同的代码突然停止工作。崩溃是由选项引起的\pgfplotsset{compat=newest}：从代码中删除它可以解决问题。我不明白为什么会这样。有人能帮我吗？请在此处查找 MWE。

\documentclass{beamer}
\usepackage{tikz,pgfplots} 
\pgfplotsset{compat=newest} % <-- This generates the issue
\usetikzlibrary{intersections}

% New command to show and label intersections
\newcommand*{\ShowIntersection}[2]{
    \fill 
    [name intersections={of=#1 and #2, name=i, total=\t}]
    [draw=black,fill=red] 
    \foreach \s in {1,...,\t}{(i-\s) circle (2pt) node (intersection\s) {}};
}

\begin{document}

\begin{frame}
\frametitle{MWE}
\centering

    \begin{tikzpicture}
    \begin{axis}

    \addplot [name path global=f] {-x};
    \addplot [name path global=g] {0};
    \ShowIntersection{f}{g}

    \end{axis}  
    \end{tikzpicture}

\end{frame}

\end{document}

Answer 1

问题并不在于compat=newest你对圆圈使用了过时的语法。如果你切换到现代语法circle[radius=2pt]，问题就解决了。

\documentclass{beamer}
\usepackage{tikz,pgfplots} 
\pgfplotsset{compat=newest} % <-- This is fine
\usetikzlibrary{intersections}

% New command to show and label intersections
\newcommand*{\ShowIntersection}[2]{
    \fill 
    [name intersections={of=#1 and #2, name=i, total=\t}]
    [draw=black,fill=red] 
    \foreach \s in {1,...,\t}{(i-\s) circle[radius=2pt] node (intersection\s) {}};
}

\begin{document}

\begin{frame}
\frametitle{MWE}
\centering

    \begin{tikzpicture}
    \begin{axis}

    \addplot [name path global=f] {-x};
    \addplot [name path global=g] {0};
    \ShowIntersection{f}{g}

    \end{axis}  
    \end{tikzpicture}

\end{frame}

\end{document}

当然，您也可以使用圆形节点。

\documentclass{beamer}
\usepackage{pgfplots} 
\pgfplotsset{compat=newest} % <-- This works fine
\usetikzlibrary{intersections}

% New command to show and label intersections
\newcommand*{\ShowIntersection}[2]{
    \fill 
    [name intersections={of=#1 and #2, name=i, total=\t}]
    \foreach \s in {1,...,\t}{(i-\s) 
    node[circle,inner sep=0pt,minimum size=4pt,draw=black,fill=red] (intersection\s) {}};
}

\begin{document}

\begin{frame}
\frametitle{MWE}
\centering

    \begin{tikzpicture}
    \begin{axis}

    \addplot [name path global=f] {-x};
    \addplot [name path global=g] {0};
    \ShowIntersection{f}{g}

    \end{axis}  
    \end{tikzpicture}

\end{frame}

\end{document}