垂直对齐 tabularx 表中的第一行

Question

考虑以下 MWE：

\documentclass[letterpaper]{article}
\usepackage[letterpaper,top=2.5cm,bottom=2.5cm,lmargin=2.5cm,rmargin=2.5cm]{geometry}
\usepackage{array,booktabs,tabularx}
\usepackage{ragged2e}
\newcolumntype{L}{>{\RaggedRight\arraybackslash}X}
\begin{document}
\begin{center}
\renewcommand{\arraystretch}{1.25}
\begin{tabularx}{\textwidth}{*{3}{L}}
\hline
\textbf{Sample Test Sample} & \textbf{Sample Test Sample} & \textbf{Sample Test Sample Sample Test Sample}%
\\\hline%
    \begin{itemize}%
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \end{itemize}%
    &
    \begin{itemize}%
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample 
    \end{itemize}%
    &   
    \begin{itemize}%
    \item Sample Test Sample
    \item Sample Test Sample
    \end{itemize}%  
    \\\hline
\end{tabularx}
\end{center}
\end{document}

我怎样才能仅使用垂直居中第一行tabularx，并且如果可能的话删除多余的垂直空间，如图所示？

Answer 1

我怎样才能垂直居中仅限第一行使用tabularx...[强调]

我建议您\multicolumn{1}对标题行中的第三个单元格使用“包装器”。下面发布的代码中提供了更多详细信息。

我怎样才能...删除图表中显示的额外垂直空间？

我建议你使用枚举项包并使用其\newlist和\setlist宏来定义一个类似于 itemize 的环境，该环境可自动抑制多余的空格。在下面的代码中，此环境被称为tabitemize。通过定义这样一个定制环境，基本环境的属性itemize保持不变。

---

\documentclass{article}
\usepackage[letterpaper,margin=2.5cm]{geometry}

\usepackage{booktabs,tabularx,ragged2e}
\newcolumntype{L}{>{\RaggedRight}X}
\newcolumntype{M}[1]{>{\RaggedRight}m{#1}} % use 'm' column type

\usepackage{enumitem} % for '\newlist' and '\setlist' macros
% use '\newlist' and '\setlist' to define a new itemize-like env.:
\newlist{tabitemize}{itemize}{1}
\setlist[tabitemize]{label=\textbullet,left=0pt,noitemsep,
           before={\begin{minipage}[t]{\hsize}},
           after ={\end{minipage}}}
\newlength\mylen
\setlength\mylen{\dimexpr0.333\textwidth-1.333\tabcolsep\relax}

\begin{document}

\begin{center}
\renewcommand{\arraystretch}{1.25}
\begin{tabularx}{\textwidth}{@{} LLL @{}} % no whitespace padding at the edges
\toprule
\textbf{Sample Test Sample} & \textbf{Sample Test Sample} & 
\multicolumn{1}{M{\mylen}}{\textbf{Sample Test Sample Sample Test Sample}}\\ 
\midrule
    \begin{tabitemize}
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
    \end{tabitemize}
    &
    \begin{tabitemize}
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample 
    \end{tabitemize}
    &   
    \begin{tabitemize}
    \item Sample Test Sample
    \item Sample Test Sample
    \end{tabitemize} 
\\
\bottomrule
\end{tabularx}
\end{center}

\end{document}

Answer 2

如果你愿意使用tabullarray包而不是tabularx，MWE 会更简单和更短，但编译时间会更长：

\documentclass[letterpaper]{article}
\usepackage[margin=2.5cm]{geometry}
\usepackage{lipsum}

\usepackage{microtype}
\usepackage{ragged2e}
\usepackage{tabularray}
    \UseTblrLibrary{booktabs, varwidth}
\usepackage{enumitem}

\begin{document}
    \begin{center}
    \setlist[itemize]{nosep, leftmargin=*}
\begin{tblr}{colspec = {@{} *{3}{X[cmd=\RaggedRight\hspace{0pt}]} @{}},
             row{1}  = {font=\bfseries, m},
             stretch=-1,%<--- remove extra space above and below lists
                        % with nosep option; see doc p.51 tabularray
              measure = vbox,
              row{3-Z} = {rowsep=5pt}
             }
    \toprule
Sample Test Sample
    & Sample Test Sample
        &   Sample Test Sample Sample Test Sample   \\
    \midrule
    \begin{itemize}
\item Sample Test Sample
\item Sample Test Sample
\item Sample Test Sample
\item Sample Test Sample
\item Sample Test Sample
    \end{itemize}
    &   \begin{itemize}
    \item Sample Test Sample
    \item Sample Test Sample
    \item Sample Test Sample
        \end{itemize}
        &   \begin{itemize}
        \item Sample Test Sample
        \item Sample Test Sample
                \end{itemize}                           \\
    \begin{itemize}
\item   \lipsum[1][1-2]
\item  \lipsum[1][3-5]
    \end{itemize}
    &   \begin{itemize}
    \item   \lipsum[1][1-2]
    \item  \lipsum[1][3-5]
        \end{itemize}
        &   \begin{itemize}
        \item   \lipsum[1][1-2]
        \item  \lipsum[1][3-5]
                \end{itemize}                           \\
    \bottomrule
\end{tblr}
    \end{center}
\end{document}