我正在使用 matlab2tikz MATLAB 函数将带有子图的 MATLAB 图形导出到 tikz 代码。不幸的是，子图没有正确对齐。帖子PGFplot 占据整个 \linewidth，并与 tikzpicture 上的 y=轴对齐似乎解决了类似的问题。但是，我查看了 .tikz 文件中的代码，它似乎使用了该帖子答案中建议的方法，但图表仍然没有正确对齐。下面是一张显示此问题的图像和相应的代码。抱歉，它有点长，这是我能做的最简洁的，但仍然重现了这个问题。
我怎样才能使图表正确对齐？
提前致谢！
\documentclass{article}
\usepackage{pgfplots}
\usetikzlibrary{external}
\tikzexternalize[prefix=compiled_figures/]
\pgfplotsset{try min ticks=3}
\pgfplotsset{max space between ticks=50pt}
\begin{document}
\begin{figure}[!htbp]
\centering
\newlength\figureheight
\newlength\figurewidth
\setlength\figureheight{3cm}
\setlength\figurewidth{2cm}
\tikzset{external/remake next}
\begin{tikzpicture}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0, xmax=3,
ymin=-0.5, ymax=1.5,
name=plot3,
title={$p = 2$}]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(0,0.46)(0.25,0.80)(0.5,1.02)(0.75,1.27)(1,0.59)(1.25,0.15)(1.5,-0.02)(1.75,-0.27)(2,-0.05)(2.25,0.03)(2.5,0)(2.75,0)(3,0)
};
\end{axis}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0, xmax=1.5,
ymin=0, ymax=1,
ylabel={$\phi(t)$},
name=plot1,
at=(plot3.left of south west), anchor=right of south east,
title={$p = 1$}]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(0,1)(0.25,1)(0.5,1)(0.75,1)(1,0)(1.25,0)(1.5,0)
};
\end{axis}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0, xmax=1,
ymin=-1, ymax=1,
ylabel={$\psi(t)$},
name=plot2,
at=(plot1.below south west), anchor=above north west]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(0,1)(0.25,1)(0.5,-1)(0.75,-1)(1,0)
};
\end{axis}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=-1, xmax=1.5,
ymin=-2, ymax=2,
name=plot4,
at=(plot2.right of south east), anchor=left of south west]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(-1,-0.125)(-0.75,-0.217)(-0.5,-0.274)(-0.25,-0.341)(0,0.707)(0.25,1.457)(0.5,-0.091)(0.75,-1.02)(1,-0.216)(1.25,0.124)(1.5,0)
};
\end{axis}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=-2, xmax=2,
ymin=-1, ymax=1.5,
name=plot6,
at=(plot4.right of south east), anchor=left of south west]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(-2,0.023)(-1.75,0.056)(-1.5,0.089)(-1.25,0.128)(-1,-0.017)(-0.75,-0.238)(-0.5,-0.444)(-0.25,-0.699)(0,0.136)(0.25,1.416)(0.5,0.599)(0.75,-0.787)(1,-0.443)(1.25,0.146)(1.5,0.056)(1.75,-0.0234374999975261)(2,0)
};
\end{axis}
\begin{axis}[%
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0, xmax=4.5,
ymin=-0.5, ymax=1.5,
at=(plot6.above north west), anchor=below south west,
title={$p = 3$}]
\addplot [
color=blue,
solid,
line width=2.0pt,
forget plot
]
coordinates{
(0,0.221)(0.25,0.536)(0.5,0.842)(0.75,1.212)(1,0.991)(1.25,0.547)(1.5,0.19)(1.75,-0.285)(2,-0.259)(2.25,-0.069)(2.5,-0.032)(2.75,0.070)(3,0.046)(3.25,-0.015)(3.5,-0.006)(3.75,0.002)(4,0)(4.25,0)(4.5,0)
};
\end{axis}
\end{tikzpicture}%
\end{figure}
\end{document}
答案1
Groupplot 似乎达成了这笔交易。正如你在这里看到的：如何堆叠和对齐具有相同 x 但不同 y 轴的多个图？请注意，您应该调整垂直设置参数以便有一定的间隙以及组大小。
这将是这样的：
\documentclass{article}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.groupplots}
\begin{document}
\begin{tikzpicture}
\begin{groupplot}[
group style={
group name=my plots,
group size=3 by 3,
ylabels at=edge left
},
footnotesize,
width=5cm,
height=4cm,
tickpos=left,
ytick align=outside,
xtick align=outside,
enlarge x limits=false
]
\nextgroupplot[title={$p=1$},ylabel=$\phi(t)$]
\addplot[solid] coordinates{
(0,1)(0.25,1)(0.5,1)(0.75,1)(1,0)(1.25,0)(1.5,0)
};
\nextgroupplot[title={$p=2$}]
\addplot[solid] coordinates{
(0,1)(0.25,1)(0.5,-1)(0.75,-1)(1,0)
};
\nextgroupplot[title={$p=3$}]
\addplot [solid]
coordinates{
(-1,-0.125)(-0.75,-0.217)(-0.5,-0.274)(-0.25,-0.341)(0,0.707)(0.25,1.457)(0.5,-0.091)(0.75,-1.02)(1,-0.216)(1.25,0.124)(1.5,0)
};
\nextgroupplot[ylabel=$\psi(t)$]
\addplot [solid]
coordinates{
(-1,-0.125)(-0.75,-0.217)(-0.5,-0.274)(-0.25,-0.341)(0,0.707)(0.25,1.457)(0.5,-0.091)(0.75,-1.02)(1,-0.216)(1.25,0.124)(1.5,0)
};
\nextgroupplot
\addplot [solid]
coordinates{
(-2,0.023)(-1.75,0.056)(-1.5,0.089)(-1.25,0.128)(-1,-0.017)(-0.75,-0.238)(-0.5,-0.444)(-0.25,-0.699)(0,0.136)(0.25,1.416)(0.5,0.599)(0.75,-0.787)(1,-0.443)(1.25,0.146)(1.5,0.056)(1.75,-0.0234374999975261)(2,0)
};
\nextgroupplot
\addplot [solid]
coordinates{
(0,0.221)(0.25,0.536)(0.5,0.842)(0.75,1.212)(1,0.991)(1.25,0.547)(1.5,0.19)(1.75,-0.285)(2,-0.259)(2.25,-0.069)(2.5,-0.032)(2.75,0.070)(3,0.046)(3.25,-0.015)(3.5,-0.006)(3.75,0.002)(4,0)(4.25,0)(4.5,0)
};
\end{groupplot}
\end{tikzpicture}
\end{document}
当然，您也可以添加您的情节选项（我只保留了实体以缩短代码）...