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tikz 中用虚线连接图表

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tikz 中用虚线连接图表

我怎样才能将 tikz 中的图形线与旁边的表格连接起来，如下图所示？ 在此处输入图片描述

\documentclass[12pt,a4paper]{article}
\usepackage[english,greek]{babel}
\usepackage{ucs} 
\usepackage[utf8x]{inputenc}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tikz}
\usepackage{tkz-tab}
\usetikzlibrary{shapes,snakes}
\usepackage{smartdiagram}
\usepackage{geometry}
\usetikzlibrary{positioning}
\geometry{left=0.75in,right=0.75in,top=0.65in,bottom=0.65in}
\usepackage{tkz-euclide}
\usetikzlibrary{shapes.geometric}
    \usepackage{tkz-fct} \usetkzobj{all}
\usetikzlibrary{calc,decorations.pathreplacing}
\usetikzlibrary{decorations.markings}
\usepackage{pgfplots}
\usepackage{verbatim}
\usepackage{pgfplots}
\pgfplotsset{compat=1.9}
\usepackage{filecontents}
\usetikzlibrary{decorations.text}
\begin{document}
\begin{center}
\begin{tabular}{|c|c|}
\hline
\textbf{$P$} & \textbf{$Q_A$} \\ 
\hline
10 & 5\\ 
\hline
8 & 8  \\ 
\hline
6 & 12 \\ 
\hline
\end{tabular}
\end{center}
\begin{center}
\begin{tikzpicture}
\begin{axis}[
  xlabel=$Q$ ,
  ylabel=$P$ ]
\addplot table [y=P, x=$Q_A$]{data_1.txt};
\addlegendentry{$Q_A$}
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}

答案1

这确实需要一些手动调整，因此对于较长的表格来说，这会相当繁琐。不过对于这种情况来说，情况还不算太糟。

在此处输入图片描述

\documentclass[12pt,a4paper]{article}
\usepackage{pgfplots,pgfplotstable,booktabs}
\pgfplotsset{compat=1.9}
\usetikzlibrary{positioning,calc}
\pgfplotstableread{%
Q P
5 10
8 8
12 6
}\mydata
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis}[
  name=myaxis,
  xmin=4.5,xmax=12.5,
  ymin=5.5,ymax=10.5,
  axis y line=left,
  axis x line=bottom,
  xlabel=$Q$ ,
  ylabel=$P$ ]
\addplot table \mydata;
\addlegendentry{$Q_A$}

\coordinate (c1) at (axis cs:5,10);
\coordinate (c2) at (axis cs:8,8);
\coordinate (c3) at (axis cs:12,6);
\end{axis}
\node (tablenode) [right=2cm of myaxis] {\pgfplotstabletypeset[every head row/.style={before row=\toprule,after row=\midrule},
every last row/.style={after row=\bottomrule}]\mydata};

\foreach \C/\Y in {c1/0.4, c2/0.6, c3/0.8}
 \draw [thick,dashed] (\C) -- ($(tablenode.north west)!\Y!(tablenode.south west)$);
\end{tikzpicture}
\end{center}
\end{document}

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