テーブルを中央に配置する際の問題

Question

次の表を中央に配置するためにさまざまな組み合わせを試しましたが、どれも機能しないようです... ご協力いただければ幸いです。

 \RequirePackage[l2tabu, orthodox]{nag}
 \documentclass[12pt]{article}

  \usepackage{amsmath, amsthm, amsfonts, amssymb, mathtools}
  \usepackage[algoruled,lined,linesnumbered,titlenotnumbered]{algorithm2e}
  \usepackage{array}
  \usepackage{booktabs}
  \usepackage{color}
  \usepackage{comment}
  \usepackage{fixltx2e}
  \usepackage[T1]{fontenc}
  \usepackage[a4paper]{geometry}
  \usepackage[pdftex]{graphicx}
  \usepackage{lmodern}
  \usepackage{listings}
  \usepackage{microtype}
  \usepackage{multirow}
  \usepackage{pdfpages}
  \usepackage{pgfplots}
  \usepackage{tikz}
  \usepackage{siunitx}
  \usepackage{float}

  \usepackage{subfigure}

  \begin{document}
  \begin{center}
  \begin{table}[!ht] 

  \begin{tabular}{|c|c|p{8.5cm}|} 
  \hline
  \begin{tikzpicture}
  \begin{axis}[
   legend style={fill=none},
   xlabel={Time}, 
   ylabel={Values}
   ]

   \pgfkeys{
   /pgf/number format/precision=5, 
}

\pgfplotstableread
{
thread  speedup
24   321.179125106 
48   324.194761473  
309  341.576483167 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=10}

\pgfplotstableread
{
thread  speedup
24   321.166812198 
48   324.1978397  
309  341.561092032 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=5}

\pgfplotstableread
{
thread  speedup
24   324.968422522 
48   327.766530848   
309  343.636843094 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=1}

\end{axis}
\end{tikzpicture}  & 

\begin{tikzpicture}
\begin{axis}[
  legend style={fill=none},
  xlabel={Time}, 
  ylabel={Values }
 ]

\pgfkeys{
  /pgf/number format/precision=5, 
}

\pgfplotstableread
{
thread  speedup
24  321.179125106  
48  324.194761473   
309 341.576483167 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=10}

\pgfplotstableread
{
thread  speedup
24   321.163733971  
48   324.186552868 
309  341.564170259 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=5}

\pgfplotstableread
{
thread  speedup
24  322.213409372 
48  325.215706756 
309 342.349118139 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=1}


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

Parameter1 & Parameter2\\
\hline
\end{tabular}



\caption{Caption}
\label{table:time}
\end{table}
\end{center}

\end{document}

Answer 1

中央揃えはフロートの周囲ではなく、フロート内に適用する必要があります。 には 3 番目の列が誤って存在していたtabularため、2 つの列をtikzpicture少し拡大縮小して適合させました。

\RequirePackage[l2tabu, orthodox]{nag}
 \documentclass[12pt]{article}

  \usepackage{amsmath, amsthm, amsfonts, amssymb, mathtools}
  \usepackage[algoruled,lined,linesnumbered,titlenotnumbered]{algorithm2e}
  \usepackage{array}
  \usepackage{booktabs}
  \usepackage{color}
  \usepackage{comment}
  \usepackage{fixltx2e}
  \usepackage[T1]{fontenc}
  \usepackage[a4paper]{geometry}
  \usepackage[pdftex]{graphicx}
  \usepackage{lmodern}
  \usepackage{listings}
  \usepackage{microtype}
  \usepackage{multirow}
  \usepackage{pdfpages}
  \usepackage{pgfplots}
  \usepackage{tikz}
  \usepackage{siunitx}
  \usepackage{float}

  \usepackage{subfigure}

  \begin{document}

  \begin{table}[!ht] \centering

  \begin{tabular}{|c|c|} 
  \hline
  \begin{tikzpicture}[scale=0.7]
  \begin{axis}[
   legend style={fill=none},
   xlabel={Time}, 
   ylabel={Values}
   ]

   \pgfkeys{
   /pgf/number format/precision=5, 
}

\pgfplotstableread
{
thread  speedup
24   321.179125106 
48   324.194761473  
309  341.576483167 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=10}

\pgfplotstableread
{
thread  speedup
24   321.166812198 
48   324.1978397  
309  341.561092032 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=5}

\pgfplotstableread
{
thread  speedup
24   324.968422522 
48   327.766530848   
309  343.636843094 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=1}

\end{axis}
\end{tikzpicture}  & 

\begin{tikzpicture}[scale=0.7]
\begin{axis}[
  legend style={fill=none},
  xlabel={Time}, 
  ylabel={Values }
 ]

\pgfkeys{
  /pgf/number format/precision=5, 
}

\pgfplotstableread
{
thread  speedup
24  321.179125106  
48  324.194761473   
309 341.576483167 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=10}

\pgfplotstableread
{
thread  speedup
24   321.163733971  
48   324.186552868 
309  341.564170259 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=5}

\pgfplotstableread
{
thread  speedup
24  322.213409372 
48  325.215706756 
309 342.349118139 
}\datafile

\addplot table[x=thread,y=speedup,color=red,mark=x] {\datafile};
\addlegendentry{a=10, b=1}


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

Parameter1 & Parameter2\\
\hline
\end{tabular}



\caption{Caption}
\label{table:time}
\end{table}


\end{document}