此代码是根据发布的解决方案构建的这里。我该如何在第二个图中添加这样的箭头和文本：
以下是代码：
\documentclass{book}
\usepackage[top=3cm,bottom=3cm,left=3.2cm,right=3.2cm,headsep=10pt,a4paper]{geometry}
\usepackage{tikz}
\usepackage{pgfplots,pgfplotstable, booktabs}
\usetikzlibrary{pgfplots.groupplots, matrix,backgrounds}
\usepgfplotslibrary{fillbetween}
\usepackage{filecontents}
\usepackage{graphicx}
\usepackage{float}
\usepackage{subfig}
\begin{filecontents*}{data23.csv}
A B C D
0 -14.9000001 100 -100
0.0000064 8.83999991 100 -100
0.0000128 -3.73000002 100 -100
0.0000192 -2.80000019 100 -100
0.0000256 8.83999991 100 -100
0.000032 15.82999992 100 -100
0.0000384 8.37999988 100 -100
0.0000448 -1.4000001 100 -100
0.0000512 -6.99000001 100 -100
0.0000576 -11.6400001 100 -100
0.000064 -2.33000016 100 -100
0.0000704 0.4599998 100 -100
0.0000768 -1.4000001 100 -100
0.0000832 -19.10000014 100 -100
0.0000896 0 100 -100
0.000096 -4.19000006 100 -100
0.0001024 -15.84000015 100 -100
0.0001088 -5.13000011 100 -100
0.0001152 17.23000002 100 -100
0.0001216 7.44999981 100 -100
0.000128 10.24000001 100 -100
0.0001344 -2.33000016 100 -100
0.0001408 8.37999988 100 -100
0.0001472 -63.80000019 100 -100
0.0001536 -1851.47 100 -100
0.00016 -959001.16 100 -100
0.0001664 -959001.16 100 -100
0.0001728 -959001.16 100 -100
0.0001792 -959001.16 100 -100
0.0001856 -919131.57 100 -100
0.000192 194777.73 100 -100
0.0001984 238253.27 100 -100
0.0002048 277420.5 100 -100
0.0002112 291163.1 100 -100
0.0002176 286195.89 100 -100
0.000224 255122.31 100 -100
0.0002304 182965.3 100 -100
0.0002368 74969.14 100 -100
0.0002432 1717.82 100 -100
0.0002496 -46980.57 100 -100
0.000256 -60135.04 100 -100
0.0002624 -87181.11 100 -100
0.0002688 -82944.99 100 -100
0.0002752 -64264.06 100 -100
0.0002816 -42486.94 100 -100
0.000288 -19782.69 100 -100
0.0002944 -1171.61 100 -100
0.0003008 13164.71 100 -100
0.0003072 21098.18 100 -100
0.0003136 23432.54 100 -100
0.00032 22276.77 100 -100
0.0003264 18429.47 100 -100
0.0003328 11196.82 100 -100
0.0003392 4662.66 100 -100
0.0003456 -366.48 100 -100
0.000352 -3680.12 100 -100
0.0003584 -6535.09 100 -100
0.0003648 -7723.93 100 -100
0.0003712 -7477.13 100 -100
0.0003776 -6128.57 100 -100
0.000384 -3032.39 100 -100
0.0003904 -317.5800002 100 -100
0.0003968 248.1899998 100 -100
0.0004032 1216.77 100 -100
0.0004096 2771.61 100 -100
0.000416 3422.14 100 -100
0.0004224 1918.52 100 -100
0.0004288 947.6199999 100 -100
0.0004352 -420.96 100 -100
0.0004416 -2162.53 100 -100
0.000448 -1460.78 100 -100
0.0004544 153.6599999 100 -100
0.0004608 302.6799998 100 -100
0.0004672 605.8199999 100 -100
0.0004736 -415.8400002 100 -100
0.00048 -997.9200001 100 -100
0.0004864 -1122.25 100 -100
0.0004928 -926.2000001 100 -100
0.0004992 -723.6400001 100 -100
0.0005056 284.98 100 -100
0.000512 81.01999998 100 -100
0.0005184 572.29 100 -100
0.0005248 385.0999999 100 -100
0.0005312 -301.75 100 -100
0.0005376 -298.96 100 -100
0.000544 418.1599999 100 -100
0.0005504 71.7099998 100 -100
0.0005568 839.1199999 100 -100
0.0005632 1733.19 100 -100
0.0005696 1055.65 100 -100
0.000576 -544.3600001 100 -100
0.0005824 -648.2000001 100 -100
0.0005888 -1442.62 100 -100
0.0005952 -778.5900002 100 -100
0.0006016 398.1399999 100 -100
0.000608 1222.36 100 -100
0.0006144 1837.5 100 -100
0.0006208 -152.74 100 -100
0.0006272 -1656.83 100 -100
0.0006336 -477.77 100 -100
\end{filecontents*}
\pgfplotsset{%
compat=1.12,
every tick label/.append style={font=\scriptsize},
every axis plot/.append style={line width=0.8pt},
minor grid style={dashed,red},
major grid style={dotted,green!50!black},
}
\captionsetup[subfigure]{labelfont={color=blue,scriptsize,it,bf},textfont={color=blue,scriptsize,it,bf},labelformat=parens,labelsep=space}
\begin{document}
\begin{figure}[H]
\begin{center}
\begin{tikzpicture}
\setcaptionsubtype
\begin{groupplot}[%
,group style={%
,group name=my plots
,group size=1 by 2
,vertical sep=2cm,
,horizontal sep = 2cm,
,ylabels at=edge left
}
,width=10cm
,height=6cm
,try min ticks=5
,xlabel={\bfseries{\emph{\footnotesize{Number of Recursions}}}}
,grid=both
,every major grid/.style={gray, opacity=0.5}
]
\nextgroupplot[xmin = 0, xmax = 0.7]%
\addplot [blue,mark options={scale=.65}]table[x index=0,y index=1, x expr=\thisrow{A}*1000, col sep=space] {data23.csv};\label{plots:ltone}
\nextgroupplot[ymax = 500, ymin = -500, xmin = 0, xmax = 0.7]%
\addplot [blue,mark options={scale=.65}]table[x index=0,y index=1, x expr=\thisrow{A}*1000, col sep=space,restrict y to domain=-10000:10000] {data23.csv};\label{plots:lttwo}
\addplot [smooth,red,thick,name path=A] table[x index=0,y index=2, x expr=\thisrow{A}*1000, col sep=space]{data23.csv};
\addplot [draw=none,name path=B, domain=0:.6336, mark=none] {500};
%\addplot [red, fill opacity=0.1] fill between[of=A and B,soft clip={domain=0:0.6336}];
\begin{scope}[on background layer]
\fill [red!20] (0,100) rectangle (0.7,500);
\fill [red!20] (0,-100) rectangle (0.7,-500);
\end{scope}
\addplot [smooth,red,thick,name path=C] table[x index=0,y index=3, x expr=\thisrow{A}*1000, col sep=space]{data23.csv};
\addplot [draw=none,name path=D, domain=0:.6336, mark=none] {-500};
\end{groupplot}
\node[text width=.5\linewidth,align=center,anchor=south] at (my plots c1r1.north) {\caption[]{Test 1\label{subplot:ltone}}};
\node[text width=.5\linewidth,align=center,anchor=south] at (my plots c1r2.north) {\caption[]{Test 2\label{subplot:lttwo}}};
\end{tikzpicture}
\caption[]{Plot showing position ${\mathbf{P_{T}}}$}\label{abserror}
\end{center}
\end{figure}
\end{document}
答案1
添加name path=plotA到蓝色图后，您可以使用
\draw [-latex, shorten >=3pt, name intersections={of=plotA and A,name=i}] (0.2,420) node[left]{Text here} to[out=350,in=160] (i-1);
请注意，编译需要一段时间，可能是因为有很多交点。该name intersections部分来自intersections库，我相信是由加载的fillbetween。另请注意，只需查看轴上的值即可找到坐标 (0.2,420)。
当然，你也可以直接读取轴上的交点坐标，这样编译起来会快得多，尽管坐标可能不太精确。例如
\draw [-latex] (0.2,420) node[left]{Text here} to[out=350,in=160] (0.34,110);
还不错。
\documentclass{book}
\usepackage[top=3cm,bottom=3cm,left=3.2cm,right=3.2cm,headsep=10pt,a4paper]{geometry}
\usepackage{tikz}
\usepackage{pgfplots,pgfplotstable, booktabs}
\usetikzlibrary{pgfplots.groupplots, matrix,backgrounds}
\usepgfplotslibrary{fillbetween}
\usepackage{filecontents}
\usepackage{graphicx}
\usepackage{float}
\usepackage{subfig}
\begin{filecontents*}{data23.csv}
A B C D
0 -14.9000001 100 -100
0.0000064 8.83999991 100 -100
0.0000128 -3.73000002 100 -100
0.0000192 -2.80000019 100 -100
0.0000256 8.83999991 100 -100
0.000032 15.82999992 100 -100
0.0000384 8.37999988 100 -100
0.0000448 -1.4000001 100 -100
0.0000512 -6.99000001 100 -100
0.0000576 -11.6400001 100 -100
0.000064 -2.33000016 100 -100
0.0000704 0.4599998 100 -100
0.0000768 -1.4000001 100 -100
0.0000832 -19.10000014 100 -100
0.0000896 0 100 -100
0.000096 -4.19000006 100 -100
0.0001024 -15.84000015 100 -100
0.0001088 -5.13000011 100 -100
0.0001152 17.23000002 100 -100
0.0001216 7.44999981 100 -100
0.000128 10.24000001 100 -100
0.0001344 -2.33000016 100 -100
0.0001408 8.37999988 100 -100
0.0001472 -63.80000019 100 -100
0.0001536 -1851.47 100 -100
0.00016 -959001.16 100 -100
0.0001664 -959001.16 100 -100
0.0001728 -959001.16 100 -100
0.0001792 -959001.16 100 -100
0.0001856 -919131.57 100 -100
0.000192 194777.73 100 -100
0.0001984 238253.27 100 -100
0.0002048 277420.5 100 -100
0.0002112 291163.1 100 -100
0.0002176 286195.89 100 -100
0.000224 255122.31 100 -100
0.0002304 182965.3 100 -100
0.0002368 74969.14 100 -100
0.0002432 1717.82 100 -100
0.0002496 -46980.57 100 -100
0.000256 -60135.04 100 -100
0.0002624 -87181.11 100 -100
0.0002688 -82944.99 100 -100
0.0002752 -64264.06 100 -100
0.0002816 -42486.94 100 -100
0.000288 -19782.69 100 -100
0.0002944 -1171.61 100 -100
0.0003008 13164.71 100 -100
0.0003072 21098.18 100 -100
0.0003136 23432.54 100 -100
0.00032 22276.77 100 -100
0.0003264 18429.47 100 -100
0.0003328 11196.82 100 -100
0.0003392 4662.66 100 -100
0.0003456 -366.48 100 -100
0.000352 -3680.12 100 -100
0.0003584 -6535.09 100 -100
0.0003648 -7723.93 100 -100
0.0003712 -7477.13 100 -100
0.0003776 -6128.57 100 -100
0.000384 -3032.39 100 -100
0.0003904 -317.5800002 100 -100
0.0003968 248.1899998 100 -100
0.0004032 1216.77 100 -100
0.0004096 2771.61 100 -100
0.000416 3422.14 100 -100
0.0004224 1918.52 100 -100
0.0004288 947.6199999 100 -100
0.0004352 -420.96 100 -100
0.0004416 -2162.53 100 -100
0.000448 -1460.78 100 -100
0.0004544 153.6599999 100 -100
0.0004608 302.6799998 100 -100
0.0004672 605.8199999 100 -100
0.0004736 -415.8400002 100 -100
0.00048 -997.9200001 100 -100
0.0004864 -1122.25 100 -100
0.0004928 -926.2000001 100 -100
0.0004992 -723.6400001 100 -100
0.0005056 284.98 100 -100
0.000512 81.01999998 100 -100
0.0005184 572.29 100 -100
0.0005248 385.0999999 100 -100
0.0005312 -301.75 100 -100
0.0005376 -298.96 100 -100
0.000544 418.1599999 100 -100
0.0005504 71.7099998 100 -100
0.0005568 839.1199999 100 -100
0.0005632 1733.19 100 -100
0.0005696 1055.65 100 -100
0.000576 -544.3600001 100 -100
0.0005824 -648.2000001 100 -100
0.0005888 -1442.62 100 -100
0.0005952 -778.5900002 100 -100
0.0006016 398.1399999 100 -100
0.000608 1222.36 100 -100
0.0006144 1837.5 100 -100
0.0006208 -152.74 100 -100
0.0006272 -1656.83 100 -100
0.0006336 -477.77 100 -100
\end{filecontents*}
\pgfplotsset{%
compat=1.12,
every tick label/.append style={font=\scriptsize},
every axis plot/.append style={line width=0.8pt},
minor grid style={dashed,red},
major grid style={dotted,green!50!black},
}
\captionsetup[subfigure]{labelfont={color=blue,scriptsize,it,bf},textfont={color=blue,scriptsize,it,bf},labelformat=parens,labelsep=space}
\begin{document}
\begin{figure}[H]
\begin{center}
\begin{tikzpicture}
\setcaptionsubtype
\begin{groupplot}[%
,group style={%
,group name=my plots
,group size=1 by 2
,vertical sep=2cm,
,horizontal sep = 2cm,
,ylabels at=edge left
}
,width=10cm
,height=6cm
,try min ticks=5
,xlabel={\bfseries{\emph{\footnotesize{Number of Recursions}}}}
,grid=both
,every major grid/.style={gray, opacity=0.5}
]
\nextgroupplot[xmin = 0, xmax = 0.7]%
\addplot [blue,mark options={scale=.65}]table[x index=0,y index=1, x expr=\thisrow{A}*1000, col sep=space] {data23.csv};\label{plots:ltone}
\nextgroupplot[ymax = 500, ymin = -500, xmin = 0, xmax = 0.7]%
\addplot [name path=plotA,blue,mark options={scale=.65}]table[x index=0,y index=1, x expr=\thisrow{A}*1000, col sep=space,restrict y to domain=-10000:10000] {data23.csv};\label{plots:lttwo}
\addplot [smooth,red,thick,name path=A] table[x index=0,y index=2, x expr=\thisrow{A}*1000, col sep=space]{data23.csv};
\addplot [draw=none,name path=B, domain=0:.6336, mark=none] {500};
\begin{scope}[on background layer]
\fill [red!20] (0,100) rectangle (0.7,500);
\fill [red!20] (0,-100) rectangle (0.7,-500);
\end{scope}
\addplot [smooth,red,thick,name path=C] table[x index=0,y index=3, x expr=\thisrow{A}*1000, col sep=space]{data23.csv};
\addplot [draw=none,name path=D, domain=0:.6336, mark=none] {-500};
\draw [-latex] (0.2,420) node[left]{Text here} to[out=350,in=160] (0.34,110);
% the slow version
%\draw [-latex, shorten >=3pt, name intersections={of=plotA and A,name=i}] (0.2,420) node[left]{Text here} to[out=350,in=160] (i-1);
\end{groupplot}
\node[text width=.5\linewidth,align=center,anchor=south] at (my plots c1r1.north) {\caption[]{Test 1\label{subplot:ltone}}};
\node[text width=.5\linewidth,align=center,anchor=south] at (my plots c1r2.north) {\caption[]{Test 2\label{subplot:lttwo}}};
\end{tikzpicture}
\caption[]{Plot showing position ${\mathbf{P_{T}}}$}\label{abserror}
\end{center}
\end{figure}
\end{document}