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显示两个相邻的图形，其 x 轴对齐

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显示两个相邻的图形，其 x 轴对齐

如何对齐以下两个图表，使它们的 x 轴对齐？在这两个图表中，y 轴的顶部都比我想要的要高。它似乎在 13 到 14 之间的高度。我如何将它们的高度调整到 11？

\documentclass{amsart}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.11}

\begin{document}

\begin{tikzpicture}
\begin{axis}[width=3in,axis equal image,
    axis lines=middle,
    xmin=-4,xmax=8,samples=101,
    xlabel=$x$,ylabel=$y$,
    ymin=-2,ymax=10,
    restrict y to domain=-2:10,
    enlargelimits={abs=1cm},
    axis line style={latex-latex},
    ticklabel style={font=\tiny,fill=white},
    xtick={2,10},ytick={},
    xlabel style={at={(ticklabel* cs:1)},anchor=north west},
    ylabel style={at={(ticklabel* cs:1)},anchor=south west}
]
\addplot [latex-latex,domain=-4:8] {x + 2} node [pos=0.9, anchor=north west, font=\footnotesize] {$y=f(x)$};
\draw [fill=white] (2,4) circle [radius=1.5pt] node[right,font=\tiny]{$(2, \, 4)$};
\end{axis}
\end{tikzpicture}

\begin{tikzpicture}
\begin{axis}[width=3in,axis equal image,
    axis lines=middle,
    xmin=-4,xmax=8,samples=101,
    xlabel=$x$,ylabel=$y$,
    ymin=-2,ymax=10,
    restrict y to domain=-2:10,
    enlargelimits={abs=1cm},
    axis line style={latex-latex},
    ticklabel style={font=\tiny,fill=white},
    xtick={2,10},ytick={},
    xlabel style={at={(ticklabel* cs:1)},anchor=north west},
    ylabel style={at={(ticklabel* cs:1)},anchor=south west}
]
\addplot [latex-latex,domain=-4:8] {x + 2} node [pos=0.9, anchor=north west, font=\footnotesize] {$y=g(x)$};
\draw [fill=white] (2,4) circle [radius=1.5pt] node[right,font=\tiny]{$(2, \, 4)$};
\draw [fill] (2,0) circle [radius=1.5pt];
\end{axis}
\end{tikzpicture}
\hspace{\fill}


\end{document}

答案1

为了使最大 y 值相同，请消除enlargelimits并指定ymax=11两个图表所需的值：

enter image description here

笔记：

  • 为了使两个图形彼此相邻，需要删除\end{tikzpicture}和之间的空行\begin{tikzpicture}。
  • 这也需要left在图形标签的放置位置添加一个选项。

代码：

\documentclass{amsart}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.11}

\begin{document}

\begin{tikzpicture}
\begin{axis}[width=3in,axis equal image,
    axis lines=middle,
    xmin=-4,xmax=8,samples=101,
    xlabel=$x$,ylabel=$y$,
    ymin=-2,ymax=11,
    restrict y to domain=-2:10,
    %enlargelimits={abs=1cm},
    axis line style={latex-latex},
    ticklabel style={font=\tiny,fill=white},
    xtick={2,10},ytick={},
    xlabel style={at={(ticklabel* cs:1)},anchor=north west},
    ylabel style={at={(ticklabel* cs:1)},anchor=south west}
]
\addplot [latex-latex,domain=-4:8] {x + 2} node [pos=0.9, anchor=north west, font=\footnotesize, left] {$y=f(x)$};
\draw [fill=white] (2,4) circle [radius=1.5pt] node[right,font=\tiny]{$(2, \, 4)$};
\end{axis}
\end{tikzpicture}
%
\begin{tikzpicture}
\begin{axis}[width=3in,axis equal image,
    axis lines=middle,
    xmin=-4,xmax=8,samples=101,
    xlabel=$x$,ylabel=$y$,
    ymin=-2,ymax=11,
    restrict y to domain=-2:10,
   % enlargelimits={abs=1cm},
    axis line style={latex-latex},
    ticklabel style={font=\tiny,fill=white},
    xtick={2,10},ytick={},
    xlabel style={at={(ticklabel* cs:1)},anchor=north west},
    ylabel style={at={(ticklabel* cs:1)},anchor=south west}
]
\addplot [latex-latex,domain=-4:8] {x + 2} node [pos=0.9, anchor=north west, font=\footnotesize, left] {$y=g(x)$};
\draw [fill=white] (2,4) circle [radius=1.5pt] node[right,font=\tiny]{$(2, \, 4)$};
\draw [fill] (2,0) circle [radius=1.5pt];
\end{axis}
\end{tikzpicture}
\end{document}

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