创建 2x2 组图并在侧面添加 +1 图？

Question

我想创建一个 2x2 + 1 的图，像......

---------------------------|
| 图 1 | 图 2 | |
------------------- 地块 5 |
| 图 3 | 图 4 | |
---------------------------|

我该如何实现呢？使用 pgfplots 包？

Answer 1

以下是一些入门知识

我已经使用了subcaption包，除其他内容外，还提供subfigure环境。您可以将其视为minipage- 它采用所有相同的强制和可选参数。

根据需要调整宽度:)

% arara: pdflatex
% !arara: indent: {overwrite: yes}
\documentclass{article}
\usepackage{pgfplots}
\usepackage{subcaption}

\pgfplotsset{
    every axis/.append style={
        scale only axis,       
        width=\textwidth,
    }
}

\begin{document}

\begin{figure}%
    \begin{minipage}{.5\textwidth}
    \centering
        \begin{subfigure}{.4\textwidth}
            \begin{tikzpicture}
                \begin{axis}
                    \addplot {x^2};
                \end{axis}
            \end{tikzpicture}
            \caption{}
        \end{subfigure}%
        \hfill
        \begin{subfigure}{.4\textwidth}
            \centering
            \begin{tikzpicture}
                \begin{axis}
                    \addplot {x^2};
                \end{axis}
            \end{tikzpicture}
            \caption{}
        \end{subfigure}%
        \\
        \begin{subfigure}{.4\textwidth}
            \begin{tikzpicture}
                \begin{axis}
                    \addplot {x^2};
                \end{axis}
            \end{tikzpicture}
            \caption{}
        \end{subfigure}%
        \hfill
        \begin{subfigure}{.4\textwidth}
            \begin{tikzpicture}
                \begin{axis}
                    \addplot {x^2};
                \end{axis}
            \end{tikzpicture}
            \caption{}
        \end{subfigure}
    \end{minipage}%
    \begin{minipage}{.5\textwidth}
    \centering
        \begin{subfigure}{.9\textwidth}
            \begin{tikzpicture}
                \begin{axis}
                    \addplot {x^2};
                \end{axis}
            \end{tikzpicture}
            \caption{}
        \end{subfigure}
    \end{minipage}%
    \caption{}%
    \label{}%
\end{figure}


\end{document}

Answer 2

如果不需要单独的标题，只需在axis后面添加一个groupplot并适当偏移即可。

下面，我在手册的groupplot示例中添加了一个额外的轴。

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\usepgfplotslibrary{groupplots}

\begin{document}
\begin{tikzpicture}
    \pgfplotsset{
        every axis/.append style={
            scale only axis,
            xmin=0, xmax=2,
            ymin=0, ymax=2,
            xtick distance=1,
            ytick distance=1,
            enlarge x limits=true,
            enlarge y limits=true,
        }
    }
\def\sep{0.5cm}
\def\side{1.5cm}
    \begin{groupplot}[
        group style={
            group name=small, % so that plots' coords can be ref'd
            group size=2 by 2,
            x descriptions at=edge bottom,
            y descriptions at=edge left,
            horizontal sep=\sep,
            vertical sep=\sep,
        },
        height=\side,
        width=\side,
    ]
        \nextgroupplot
        \addplot coordinates {(0,0) (1,1) (2,2)};
        \nextgroupplot
        \addplot coordinates {(0,2) (1,1) (2,0)};
        \nextgroupplot[
            ylabel=$y$ label,
            y label style={at=(ticklabel cs:1.15)},
        ]
        \addplot coordinates {(0,2) (1,1) (2,1)};
        \nextgroupplot[
            xlabel=$x$ label,
            x label style={at=(ticklabel cs:0.85)},
        ]
        \addplot coordinates {(0,2) (1,1) (1,0)};
    \end{groupplot}

    \begin{axis}[
        name=big,
        at={($(small c2r2.south east)+(\sep+2ex,0)$)}, % offset
        height=\side*2+\sep,
        width=\side*2+\sep,
    ]
        \addplot coordinates {(0,1.5) (1,0.5) (2,1.5)};

    \end{axis}
\end{tikzpicture}
\end{document}