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在 Beamer 中无法显示 tikz 中的标签

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在 Beamer 中无法显示 tikz 中的标签

我有一张 tikz 图片（本例中为高斯分布），我想逐渐解开它的标签。按照此网站中的一些建议，我尝试了以下操作，但不起作用 - 它只生成了一张幻灯片。有什么帮助吗？

\documentclass{beamer}
\usepackage{pgfplots}
\usepackage{tikz} 

\pgfplotsset{compat=1.10}

\usetikzlibrary{external} 
\tikzexternalize

\begin{document}

    \pgfmathdeclarefunction{gauss}{3}{%
        \pgfmathparse{1/(#3*sqrt(2*pi))*exp(-((#1-#2)^2)/(2*#3^2))}%
    }

\begin{frame}[t,fragile]{Test}

    \begin{tikzpicture}
    \begin{axis}[
    no markers, 
    domain=0:6, 
    samples=100,
    ymin=0,
    axis lines*=left, 
    every axis y label/.style={at=(current axis.above origin),anchor=south},
    every axis x label/.style={at=(current axis.right of origin),anchor=west},
    height=5cm, 
    width=12cm,
    xtick=\empty, 
    ytick=\empty,
    enlargelimits=false, 
    clip=false, 
    axis on top,
    grid = major,
    hide y axis
    ]

    \addplot [very thick,cyan!50!black] {gauss(x, 3, 1)};

    \pgfmathsetmacro\valueA{gauss(1.96,3,1)}
    \draw [gray] (axis cs:1,0) -- (axis cs:1,\valueA)
    (axis cs:5,0) -- (axis cs:5,\valueA);

    \draw [yshift=0.3cm, latex-latex](axis cs:1, 0) -- node [fill=white] {$95\%$} (axis cs:5, 0);

    \only<1->{\node[below] at (axis cs:1, 0)  {$h - 1.96\cdot se$}}; 
    \only<2->{\node[below] at (axis cs:3, 0)  {$h$}}; 
    \only<3->{\node[below] at (axis cs:5, 0)  {$h + 1.96\cdot se$}}; 
    \end{axis}

    \end{tikzpicture}   
\end{frame}

\end{document}

答案1

快速解决方案：不要external在这里使用！

\documentclass{beamer}
\usepackage{pgfplots}
\usepackage{tikz} 

\pgfplotsset{compat=1.10}

%\usetikzlibrary{external} 
%\tikzexternalize

\begin{document}

    \pgfmathdeclarefunction{gauss}{3}{%
        \pgfmathparse{1/(#3*sqrt(2*pi))*exp(-((#1-#2)^2)/(2*#3^2))}%
    }

\begin{frame}[t,fragile]{Test}

    \begin{tikzpicture}
    \begin{axis}[
    no markers, 
    domain=0:6, 
    samples=100,
    ymin=0,
    axis lines*=left, 
    every axis y label/.style={at=(current axis.above origin),anchor=south},
    every axis x label/.style={at=(current axis.right of origin),anchor=west},
    height=5cm, 
    width=12cm,
    xtick=\empty, 
    ytick=\empty,
    enlargelimits=false, 
    clip=false, 
    axis on top,
    grid = major,
    hide y axis
    ]

    \addplot [very thick,cyan!50!black] {gauss(x, 3, 1)};

    \pgfmathsetmacro\valueA{gauss(1.96,3,1)}
    \draw [gray] (axis cs:1,0) -- (axis cs:1,\valueA)
    (axis cs:5,0) -- (axis cs:5,\valueA);

    \draw [yshift=0.3cm, latex-latex](axis cs:1, 0) -- node [fill=white] {$95\%$} (axis cs:5, 0);

    \only<1->{\node[below] at (axis cs:1, 0)  {$h - 1.96\cdot se$}}; 
    \only<2->{\node[below] at (axis cs:3, 0)  {$h$}}; 
    \only<3->{\node[below] at (axis cs:5, 0)  {$h + 1.96\cdot se$}}; 
    \end{axis}

    \end{tikzpicture}   
\end{frame}

\end{document}

答案2

一旦意识到问题出在external（感谢 Christian），我找到了一个答案，它可以让外部和覆盖一起工作：

使用 tikz 外部功能与 beamer \only

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