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使用子图垂直对齐 pgfplots

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使用子图垂直对齐 pgfplots

我需要对齐我的两个图。它们似乎被文本以外的其他东西固定住了。因为一个 pgfplot 的标题文本比另一个多，所以它偏移了它。请看图片。我尝试搜索，并且看到了示例，但是floatrow对于图像（不是 pgfplots），我尝试使用floatrow，但出现了超时错误。此外，有没有办法让两个图共享一个图例，也许位于横跨两个图（水平）的底部？

图像

\documentclass[10pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{textcomp}
\usepackage{pgfplots}
\usepackage{array}
\usepackage{xcolor}
\usepackage{siunitx}
\usepackage{fixltx2e}
\usepackage{tikz}
\usepackage{lscape}
\usepackage{diagbox}
\usepackage{subcaption}
\usepackage{caption}
\usepackage{floatrow} 
\usepackage[version=4]{mhchem}

\begin{figure}[h]
\begin{subfigure}{0.4\linewidth}
\centering
\begin{tikzpicture}[scale=0.95,trim left]
\begin{axis}[
    width=\textwidth,
    scale only axis,
    xlabel={nm},
    ylabel={Abs},
    xmin=385, xmax=485,
    legend pos=south east,
    cycle list name=color list,
    legend columns=2,
    legend cell align=left,
    legend style={font=\footnotesize},
    xtick pos=left,
    ytick pos=left]

\addplot table [col sep=comma, x=nm, y=0] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=2.3] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=3.5] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=5.2] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=7.8] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=11.7] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=17.6] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=26.3] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=39.5] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=59.3] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=88.9] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=133.3] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=200] {ST038deriv.csv};
\addplot table [col sep=comma, x=nm, y=300] {ST038deriv.csv};

\end{axis}
\end{tikzpicture}
\caption{$t_{initial}$ derivative abs. spectra}
\end{subfigure}     %second subfigure
\hfill
\begin{subfigure}{0.4\linewidth}
\centering
\begin{tikzpicture}[scale=0.95,trim left]
\begin{axis}[
    width=\textwidth,
    scale only axis,
    xlabel={nm},
    ylabel={Abs},
    xmin=385, xmax=485,
    legend pos=south east,
    cycle list name=color list,
    legend columns=2,
    legend cell align=left,
    legend style={font=\footnotesize},
    xtick pos=left,
    ytick pos=left]

\addplot table [col sep=comma, x=nm, y=0] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=2.3] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=3.5] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=5.2] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=7.8] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=11.7] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=17.6] {ST041 re-check deriv.csv};
\addplot [densely dashed] table [col sep=comma, x=nm, y=26.3] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=39.5] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=59.3] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=88.9] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=133.3] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=200] {ST041 re-check deriv.csv};
\addplot table [col sep=comma, x=nm, y=300] {ST041 re-check deriv.csv};

\end{axis}
\end{tikzpicture}
\caption{$t \approx 96 hr$ derivative abs. spectra}
\end{subfigure}
\end{figure}
\end{document}

答案1

您可以尝试使用环境的可选参数subfigure，这样图像将按顶部、底部或中心对齐。可选参数的可能值为b、t或c。例如，使用b：

\begin{subfigure}[b]{.45\linewidth}

\end{subfigure}\hill
\begin{subfigure}[b]{.45\linewidth}

\end{subfigure}

\subcaptionbox可以使用以下方法获得不同的对齐选项：subcaption包，它根据子图和子表的第一个标题行自动对齐子图和子表：

\documentclass[10pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{textcomp}
\usepackage{pgfplots}
\usepackage{array}
\usepackage{xcolor}
\usepackage{siunitx}
\usepackage{fixltx2e}
\usepackage{tikz}
\usepackage{lscape}
\usepackage{diagbox}
\usepackage{subcaption}
\usepackage{caption}
\usepackage{subcaption} 
\usepackage[version=4]{mhchem}

\begin{document}

\begin{figure}[h]
\subcaptionbox{$t_{\text{initial}}$ derivative abs. spectra}{%
\begin{tikzpicture}[scale=0.95,trim left]
\begin{axis}[
    width=0.45\textwidth,
    scale only axis,
    xlabel={nm},
    ylabel={Abs},
    xmin=385, xmax=485,
    legend pos=south east,
    cycle list name=color list,
    legend columns=2,
    legend cell align=left,
    legend style={font=\footnotesize},
    xtick pos=left,
    ytick pos=left]

\addplot coordinates {(400,0) (430,8)};
\end{axis}
\end{tikzpicture}}\hfill
\subcaptionbox{$t \approx 96 hr$ derivative abs. spectra}{%
\begin{tikzpicture}[scale=0.95,trim left]
\begin{axis}[
    width=0.4\textwidth,
    scale only axis,
    xlabel={nm},
    ylabel={Abs},
    xmin=385, xmax=485,
    legend pos=south east,
    cycle list name=color list,
    legend columns=2,
    legend cell align=left,
    legend style={font=\footnotesize},
    xtick pos=left,
    ytick pos=left]

\addplot[blue] coordinates {(400,5) (470,2)};
\end{axis}
\end{tikzpicture}}
\caption{A common legend for both plots}
\end{figure}

\end{document}

结果：

在此处输入图片描述

至于另一个要求，即常见的图例，由于没有提供其他信息，我只是使用了\caption。

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