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轴标签不在所需位置

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轴标签不在所需位置

我想问一下如何将 y 标签放在左侧垂直线上方而不是 0 上方。另外请向我解释一下你答案中代码的含义。

图片：

是的

我的代码：

\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\pgfmathdeclarefunction{gauss}{2}{%
  \pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{tikzpicture}
\begin{axis}[
  no markers, domain=-4:4, samples=100,
  axis lines*=left, xlabel=$x$, ylabel=$y$,
  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=10cm,
  xtick={0}, ytick=\empty,
  enlargelimits=false, clip=false, axis on top,
  grid = major]
  \addplot [fill=cyan!20, draw=none, domain=-4:2] {gauss(0,1)} \closedcycle;
  \addplot [very thick,cyan!50!black] {gauss(0,1)};
\draw [yshift=-0.6cm, latex-latex](axis cs:2,0) -- node [fill=white] {\small $z=2$} (axis cs:0,0);
\end{axis}
\end{tikzpicture}
\end{document}

答案1

将样式更改every axis y label为

every axis y label/.style={at={(rel axis cs:0,1)},anchor=south},

坐标rel axis cs系的左下角为（0,0），右上角为（1,1），所以（0,1）就是右上角。

在此处输入图片描述

\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\pgfmathdeclarefunction{gauss}{2}{%
  \pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{tikzpicture}
\begin{axis}[
  no markers, domain=-4:4, samples=100,
  axis lines*=left, xlabel=$x$, ylabel=$y$,
  every axis y label/.style={at={(rel axis cs:0,1)},anchor=south},
  every axis x label/.style={at=(current axis.right of origin),anchor=west},
  height=5cm, width=10cm,
  xtick={0}, ytick=\empty,
  enlargelimits=false, clip=false, axis on top,
  grid = major]
  \addplot [fill=cyan!20, draw=none, domain=-4:2] {gauss(0,1)} \closedcycle;
  \addplot [very thick,cyan!50!black] {gauss(0,1)};
  \draw [yshift=-0.6cm, latex-latex](axis cs:2,0) -- node [fill=white] {\small $z=2$} (axis cs:0,0);
\end{axis}
\end{tikzpicture}
\end{document}

答案2

或简单every axis y label/.style={at={(0,1)},anchor=south},：

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.14}

\begin{document}
\pgfmathdeclarefunction{gauss}{2}{%
  \pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{tikzpicture}
\begin{axis}[
  no markers, domain=-4:4, samples=100,
%
  axis lines=left, 
  xlabel=$x$, ylabel=$y$,
  every axis y label/.style={at={(0,1)},anchor=south},
  every axis x label/.style={at={(1,0)},anchor=west},
  height=5cm, width=10cm,
  xtick={0}, ytick=\empty,
  enlargelimits=false, clip=false, axis on top,
  grid = major]
  \addplot [fill=cyan!20, draw=none, domain=-4:2] {gauss(0,1)} \closedcycle;
  \addplot [very thick,cyan!50!black] {gauss(0,1)};
\draw [yshift=-0.6cm, latex-latex](axis cs:2,0) -- node [fill=white] {\small $z=2$} (axis cs:0,0);
\end{axis}
\end{tikzpicture}
\end{document}

在此处输入图片描述

答案3

您可以为此使用不同的坐标系，例如rel axis cs或axis description cs。但在我看来，最好的方法是为相应的轴使用正确的坐标系：xticklabel* cs和yticklabel* cs（如果您不使用星号，也会考虑刻度标签，这可能很方便。这里不需要）

这是修改后的代码：

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{
    compat = 1.14 % n=most recent feature set, not necessarily needed
}
\begin{document}
\pgfmathdeclarefunction{gauss}{2}{%
    \pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{tikzpicture}
    \begin{axis}
        [
            no markers, 
            domain=-4:4, 
            samples=100,
            axis x line=bottom, % place axis explicitly
            axis y line=left, 
            xlabel=$x$, 
            ylabel=$y$,
            every axis y label/.style={at={(yticklabel* cs: 1)}, anchor = south}, % change here
            every axis x label/.style={at={(xticklabel* cs: 1)}, anchor = west}, % change here
            height=5cm, width=10cm,
            xtick={0}, ytick=\empty,
            enlargelimits=false, clip=false, axis on top,
            grid = major
        ]
        \addplot [fill=cyan!20, draw=none, domain=-4:2] {gauss(0,1)} \closedcycle;
        \addplot [very thick,cyan!50!black] {gauss(0,1)};
        \draw [yshift=-0.6cm, latex-latex](axis cs:2,0) -- node [fill=white] {\small $z=2$} (axis cs:0,0);
    \end{axis}
\end{tikzpicture}
\end{document}

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