我正在尝试将表格插入到两列纸张的左列。我希望我的表格看起来像这种格式：
以下是我的命令，我创建的表看起来很丑！有人能帮我吗？谢谢！
\begin{table}[h]
\begin{center}
\parbox{0.5\textwidth}{\caption{when the title is too long it will not in the center of the table}}\vspace{10pt}
\label{tab:table}
\begin{tabular}{r|ccccc|c}
& \multicolumn{5}{c}{Gene Selection Method} & \\
Cross-Validation & A & B & C & \\ \hline
fold 1 & 0 & 0 & 0 \\
fold 2 & 0 & 0 & 0 \\ \hline
fold 3 & 0 & 0 & 0 \\
fold 4 & 0 & 0 & 0 \\ \hline
fold 5 & 0 & 0 & 0 \\
fold 6 & 0 & 0 & 0 \\ \hline
fold 7 & 0 & 0 & 0 \\
fold 8 & 0 & 0 & 0 \\ \hline
fold 9 & 0 & 0 & 0 \\
fold 10 & 0 & 0 & 0 \\ \hline
Average & 0 & 0 & 0 \\
\end{tabular}
\end{center}
\end{table}
这是我的丑陋的桌子：
答案1
可以使用以下方法强制浮动float的[H]浮点规范（见figure如何影响浮动环境（如和）的位置table？）。
为了复制给定表格的样式，我建议使用以下组合array（用于列定义/对齐），tabularx（为了便于指定可伸缩列）和booktabs（为了视觉享受）。
\documentclass[twocolumn]{article}
\usepackage{float,array,booktabs,tabularx,caption}
\captionsetup[table]{
justification=centering,
labelfont=sc,
labelsep=newline}
\usepackage{lipsum}% Just for this example
\newcolumntype{C}[1]{>{\centering\arraybackslash}p{#1}}
\begin{document}
\lipsum[1]
\begin{table}[H]
\caption{when the title is too long it will not in the center of the table}
\begin{tabularx}{\columnwidth}{ X *{3}{C{.2\columnwidth}} }
\toprule
\multicolumn{1}{c}{Cross-} & \multicolumn{3}{c}{Gene selection method} \\
\multicolumn{1}{c}{validation} & A & B & C \\
\midrule
fold 1 & 0 & 0 & 0 \\
fold 2 & 0 & 0 & 0 \\ \midrule
fold 3 & 0 & 0 & 0 \\
fold 4 & 0 & 0 & 0 \\ \midrule
fold 5 & 0 & 0 & 0 \\
fold 6 & 0 & 0 & 0 \\ \midrule
fold 7 & 0 & 0 & 0 \\
fold 8 & 0 & 0 & 0 \\ \midrule
fold 9 & 0 & 0 & 0 \\
fold 10 & 0 & 0 & 0 \\ \midrule
Average & 0 & 0 & 0 \\
\bottomrule
\end{tabularx}
\end{table}
\lipsum[2]
\end{document}
caption可以非常轻松地设置标题布局的样式。我已明确地对table上面的浮动进行了设置。
根据 A、B 和 C 列的内容，您可以考虑使用siunitx进行额外的对齐。
答案2
这是我的解决方案...
\documentclass[11pt,a4paper,twocolumn]{article}
\usepackage{caption} % controls how captions are typeset
\usepackage{lipsum} % for typesetting dummy text
\usepackage{booktabs} % for "fancy" tables!
\usepackage{multirow} % text that spans across multiple rows
\renewcommand*\thetable{\Roman{table}}
% to get the table label number in roman capitals, as per your requirement!
\captionsetup{%
font={rm,up,normalsize},
labelfont={bf},
tablename=TABLE,
% to get the table name ("Table") in Uppercase, as per your requirement!
singlelinecheck=true,
justification=centering,
labelsep=newline,
position=bottom,
margin=10pt
}% % global setup for caption package!
% To add forced linebreak inside a table cell
% How to use :- % Foo bar & \specialcell{Foo\\bar} & Foo bar \\ % vertically centered
% Foo bar & \specialcell[t]{Foo\\bar} & Foo bar \\ % aligned with top rule
% Foo bar & \specialcell[b]{Foo\\bar} & Foo bar \\ % aligned with bottom rule
\newcommand{\specialcell}[2][c]{%
\begin{tabular}[#1]{@{}c@{}}#2\end{tabular}}
% To typeset text across rows with a line-break at desired position
\begin{document}
\lipsum[1] % for typesetting dummy text
{ % Begin group --- % To keep the effect local!
\vspace*{-2.5ex} % reduces surrounding vertical space
\renewcommand*{\arraystretch}{1.15} % to increase space between rows!
\begin{table}[h]
\centering % better than using the \begin{center} environment
\belowcaptionskip=8pt % controls the skip amount below caption
\caption{when the title is too long it will not in the center of the table\label{tab:table}}
\begin{tabular}{r@{\hskip 6.5ex}c@{\hskip 10ex}c@{\hskip -4ex}c@{\hskip -12ex}}
\toprule
& \multicolumn{3}{c}{{\hskip -1ex}Gene Selection Method} \\
\cmidrule(l{-1ex}){2-4}
\multirow{-2}[1]*{\specialcell{Cross-\\[-2pt]Validation}} & A & B & C \\
\midrule
\fbox{fold 1} & 0 & 0 & 0 \\ % Use of \fbox{} to get a frame around text, as per your requirement!
fold 2 & 0 & 0 & 0 \\
fold 3 & 0 & 0 & 0 \\
fold 4 & 0 & 0 & 0 \\
fold 5 & 0 & 0 & 0 \\
fold 6 & 0 & 0 & 0 \\
fold 7 & 0 & 0 & 0 \\
\fbox{fold 8} & 0 & 0 & 0 \\ % Use of \fbox{} to get a frame around text, as per your requirement!
fold 9 & 0 & 0 & 0 \\
fold 10 & 0 & 0 & 0 \\
\midrule
Average & 0 & 0 & 0 \\
\midrule
\end{tabular}
\end{table}
\vspace*{-1.75ex} % reduces surrounding vertical space
} % End group --- % To keep the effect local!
\lipsum[4-6] % for typesetting dummy text
\cleardoublepage
\end{document}输出预览：
希望这能有所帮助！干杯！