![子标题未居中于 pgfplot](https://linux22.com/image/395108/%E5%AD%90%E6%A0%87%E9%A2%98%E6%9C%AA%E5%B1%85%E4%B8%AD%E4%BA%8E%20pgfplot.png)
这是我第一次使用并排的 pgfplots,所以我有点不适应。然而,我注意到每个面板的子标题并不以图形为中心,如下所示:
对于面板 (a),它似乎居中了 - 但我更喜欢像 x 标签那样居中,它们以图形上可见的内容为中心 - 并且没有任何空白(如果这有意义的话)。但是,对于面板 (b),我无法让子标题居中,即使我使用了相同的代码。
我的代码如下:
\usepackage{pgfplots, pgfplotstable}
\usepackage{subcaption}
\documentclass[]{bachelor}
\LoadClass[a4paper]{report}
\begin{figure}[!h]
\centering
\begin{subfigure}{.475\linewidth}
\centering
\pgfplotsset{scaled x ticks=false}
\caption{Peer rank vs. \\ Average Annual Search Fraction}
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Peer Rank},
xlabel={Average Annual Search Fraction},
xmin=0,
xmax=4,
ymin=-5,
ymax=100,
xtick={0,1,2,3,4},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
xticklabel=\pgfkeys{/pgf/number format/.cd,fixed,precision=0,zerofill}\pgfmathprintnumber{\tick}\%,
]
\addplot table [x=c, y=b, col sep=comma] {Datafiles/rankvsasf1.csv};
\end{axis}
\end{tikzpicture}
\end{subfigure}
\hfill
\begin{subfigure}{.475\linewidth}
\centering
\caption{Log Peer Rank vs. \\ Log average Annual Search Fractions}
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Log Peer Rank},
xlabel={Log Average Annual Search Fraction},
xmin=-6,
xmax=-2,
ymin=-0,
ymax=4,
xtick={-6,-5,-4,-3,-2},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
]
\addplot table [x=x, y=y, col sep=comma] {Datafiles/loglog.csv};
]
\draw[->,shorten >=1mm,shorten <=1mm] (rel axis cs:0.45,0.9) node[right,draw,align=left] {y=-6.38-1.63x\\ $R^2$=99.7\%};
\end{axis}
\end{tikzpicture}
\end{subfigure}
\end{figure}
答案1
该解决方案将标题放在 tikzpicture 中的节点内,仅使用轴的宽度。
我尝试将 tikzpicture 相对于轴置于中心,但是它在右侧浪费了太多空间。
\documentclass[a4paper]{report}
\usepackage[margin=2cm,showframe]{geometry}% default not wide enough
\usepackage{pgfplots, pgfplotstable}
\usepackage{subcaption}
\captionsetup[subfigure]{justification=centering, singlelinecheck=false}
\newlength{\tempwidth}
\begin{document}
\begin{figure}[htb]% !h is just embarrassing.
\centering
\begin{subfigure}{.475\linewidth}
\centering
\pgfplotsset{scaled x ticks=false}
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Peer Rank},
xlabel={Average Annual Search Fraction},
xmin=0,
xmax=4,
ymin=-5,
ymax=100,
xtick={0,1,2,3,4},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
xticklabel=\pgfkeys{/pgf/number format/.cd,fixed,precision=0,zerofill}\pgfmathprintnumber{\tick}\%,
name=border
]
%\addplot table [x=c, y=b, col sep=comma] {Datafiles/rankvsasf1.csv};% file not found
\end{axis}
%place caption above axis
\pgfextractx{\tempwidth}{\pgfpointdiff{\pgfpointanchor{border}{west}}{\pgfpointanchor{border}{east}}}%
\node[above] at (border.north) {\begin{minipage}{\tempwidth}
\caption{Peer rank vs. \\ Average Annual Search Fraction}
\end{minipage}};
\end{tikzpicture}
\end{subfigure}\hfill
\begin{subfigure}{.475\linewidth}
\centering
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Log Peer Rank},
xlabel={Log Average Annual Search Fraction},
xmin=-6,
xmax=-2,
ymin=-0,
ymax=4,
xtick={-6,-5,-4,-3,-2},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
name=border
]
%\addplot table [x=x, y=y, col sep=comma] {Datafiles/loglog.csv};% file not found
]
\draw[->,shorten >=1mm,shorten <=1mm] (rel axis cs:0.45,0.9) node[right,draw,align=left] {y=-6.38-1.63x\\ $R^2$=99.7\%};
\end{axis}
%place caption above axis
\pgfextractx{\tempwidth}{\pgfpointdiff{\pgfpointanchor{border}{west}}{\pgfpointanchor{border}{east}}}%
\node[above] at (border.north) {\begin{minipage}{\tempwidth}
\caption{Log Peer Rank vs. \\ Log average Annual Search Fractions}
\end{minipage}};
\end{tikzpicture}
\end{subfigure}
\end{figure}
\end{document}
答案2
这是 John 的答案的修改版本。您可以使用 来代替测量轴的宽度text width=\pgfkeysvalueof{/pgfplots/width}
,并且我在 中添加标题,而不是单独的title
节点axis
。
text width=\pgfkeysvalueof{/pgfplots/width}
实际上使标题节点比轴本身更宽一些,因为inner sep
节点的两倍是另外加上的,并且因为轴框的宽度比scale only axis
不包含时的定义宽度小 45pt。
我还展示了一种制作总体布局的不同方法,即使用一个环境groupplot
而不是两个subfigure
环境。这样可以稍微缩短代码。请注意,我在标题中使用了\subcaption
而不是。\caption
\documentclass[a4paper]{report}
\usepackage[margin=2cm,showframe]{geometry}% default not wide enough
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots} % <-- added
\usepackage{subcaption}
\captionsetup[subfigure]{justification=centering, singlelinecheck=false}
\newlength{\tempwidth}
\begin{document}
\begin{figure}[htb]
\centering
\begin{subfigure}{.475\linewidth}
\centering
\pgfplotsset{scaled x ticks=false}
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Peer Rank},
xlabel={Average Annual Search Fraction},
xmin=0,
xmax=4,
ymin=-5,
ymax=100,
xtick={0,1,2,3,4},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
xticklabel=\pgfkeys{/pgf/number format/.cd,fixed,precision=0,zerofill}\pgfmathprintnumber{\tick}\%,
title style={text width=\pgfkeysvalueof{/pgfplots/width}},% this is actually a bit wider than the axis
title=\caption{Peer rank vs. \\ Average Annual Search Fraction}
]
%\addplot table [x=c, y=b, col sep=comma] {Datafiles/rankvsasf1.csv};% file not found
\end{axis}
\end{tikzpicture}
\end{subfigure}\hfill
\begin{subfigure}{.475\linewidth}
\centering
\begin{tikzpicture}
\begin{axis}[width=7cm,height=10cm,
ylabel={Log Peer Rank},
xlabel={Log Average Annual Search Fraction},
xmin=-6,
xmax=-2,
ymin=-0,
ymax=4,
xtick={-6,-5,-4,-3,-2},
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
title style={text width=\pgfkeysvalueof{/pgfplots/width}},
title=\caption{Log Peer Rank vs. \\ Log average Annual Search Fractions}
]
%\addplot table [x=x, y=y, col sep=comma] {Datafiles/loglog.csv};% file not found
]
\draw[->,shorten >=1mm,shorten <=1mm] (rel axis cs:0.45,0.9) node[right,draw,align=left] {$y=-6.38-1.63x$\\ $R^2=99.7\%$};
\end{axis}
\end{tikzpicture}
\end{subfigure}
\end{figure}
\begin{figure}[htb]
\centering
\begin{tikzpicture}
\begin{groupplot}[
group style={
group size={2 by 1},
horizontal sep=2cm
},
width=7cm,height=10cm,
axis background/.style={fill=gray!5},
xtick pos=lower,ytick pos=left,
xtick style={draw=none},
title style={text width=\pgfkeysvalueof{/pgfplots/width}}, % this is actually a bit wider than the axis
]
\nextgroupplot[
ylabel={Peer Rank},
xlabel={Average Annual Search Fraction},
xmin=0,
xmax=4,
ymin=-5,
ymax=100,
scaled x ticks=false,
xtick={0,1,2,3,4},
xticklabel={\pgfmathprintnumber[/pgf/number format/.cd,fixed,precision=0,zerofill]{\tick}\%},
title=\subcaption{Peer rank vs. \\ Average Annual Search Fraction}
]
%\addplot table [x=c, y=b, col sep=comma] {Datafiles/rankvsasf1.csv};% file not found
\nextgroupplot[
ylabel={Log Peer Rank},
xlabel={Log Average Annual Search Fraction},
xmin=-6,
xmax=-2,
ymin=-0,
ymax=4,
xtick={-6,-5,-4,-3,-2},
xtick style={draw=none},
title=\subcaption{Log Peer Rank vs. \\ Log average Annual Search Fractions}
]
%\addplot table [x=x, y=y, col sep=comma] {Datafiles/loglog.csv};% file not found
]
\draw[->,shorten >=1mm,shorten <=1mm] (rel axis cs:0.45,0.9) node[right,draw,align=left] {$y=-6.38-1.63x$\\ $R^2=99.7\%$};
\end{groupplot}
\end{tikzpicture}
\end{figure}
\end{document}