マルチカラム環境の再定義

Question

私はtabularxでmulticolumをよく使っています。スペースを削除する代わりに

\multicolumn{2}{@{}l}{...}

先頭と末尾の両方から末尾のスペースを削除する新しい環境を作成したいと考えています。同じことを行うための提案はありますか? ありがとうございます。

よろしくお願いいたします。

編集 ：

次のコードを使用すると、

\begin{tabularx}{\textwidth}{@{}Xc@{}}
\toprule\toprule
Some random text & 1,75,650\\\midrule
\multicolumn{2}{@{}l}{\textbf{Panel A1: AAA}} \\\midrule
Number of observations ... & 1,75,650\\

私は

しかし、（@{}をmulticloumnから削除）を使用すると

\begin{tabularx}{\textwidth}{@{}Xc@{}}
\toprule\toprule
Some random text & 1,75,650\\\midrule
\multicolumn{2}{l}{\textbf{Panel A1: AAA}} \\\midrule
Number of observations ... & 1,75,650\\

私は

\multicolumn{2}{@{}l} を複数回使用する必要があるため、@{} を処理する新しい env を作成しようとしていました。

MWE を探している人のために:

\documentclass{article}
\usepackage{ltablex}
\usepackage{threeparttable}
\usepackage{booktabs}

\title{Document}
\begin{document}
\maketitle

\begin{tabularx}{\textwidth}{Xc}
\toprule\toprule
Some random text & 1,75,650\\\midrule
\multicolumn{2}{l}{\textbf{Panel A1: AAA}} \\\midrule
Number of observations ... & 1,75,650\\
Delete: ... & (78,420)\\
Delete: ... & (7,104)\\
Final sample & 90,126\\
Delete: & (2,143)\\
Delete: & (8,345)\\
Final sample & 79,638\\\midrule
\multicolumn{2}{l}{\textbf{Panel A2: AAA}} \\\midrule
Number of observations & 79,638\\
Delete: & (39,540)\\
Delete: & (7,979) \\
Final sample & 32,119 \\\midrule
\multicolumn{2}{l}{\textbf{Panel B1: BBB }} \\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule
\multicolumn{2}{l}{\textbf{Panel B2: BBB}} \\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule\bottomrule
\end{tabularx}

\end{document}

編集: 誰かが興味を持っているかもしれないので、私は次のように定義しました:

\newcommand{\gmc}[2]{\multicolumn{#1}{@{}#2@{}}}

Answer 1

tabularray新しいテーブルコマンドを使用した例\gmc:

\documentclass[twocolumn]{article}

\usepackage{tabularray}
\UseTblrLibrary{booktabs}

\NewTableCommand{\gmc}{\SetCell[c=2]{l}\SetRow{font=\bfseries}}

\DefTblrTemplate{contfoot-text}{default}{To be continued}
\DefTblrTemplate{conthead-text}{default}{(continued)}

\title{Document}
\author{}

\begin{document}

\maketitle

\begin{longtblr}[
    caption={A table \emph{without} initial and final space before the columns}
    ]{
    colspec={Xc},
    column{1}={leftsep=0pt},
    column{Z}={rightsep=0pt},
    }
\toprule\toprule
Some random text & 1,75,650\\\midrule
\gmc Panel A1: AAA \\\midrule
Number of observations ... & 1,75,650\\
Delete: ... & (78,420)\\
Delete: ... & (7,104)\\
Final sample & 90,126\\
Delete: & (2,143)\\
Delete: & (8,345)\\
Final sample & 79,638\\\midrule
\gmc Panel A2: AAA \\\midrule
Number of observations & 79,638\\
Delete: & (39,540)\\
Delete: & (7,979) \\
Final sample & 32,119 \\\midrule
\gmc Panel B1: BBB \\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule
\gmc Panel B2: BBB\\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule\bottomrule
\end{longtblr}

\begin{longtblr}[
    caption={A table \emph{with} initial and final space before the columns}
    ]{
    colspec={Xc}
    }
\toprule\toprule
Some random text & 1,75,650\\\midrule
\gmc Panel A1: AAA \\\midrule
Number of observations ... & 1,75,650\\
Delete: ... & (78,420)\\
Delete: ... & (7,104)\\
Final sample & 90,126\\
Delete: & (2,143)\\
Delete: & (8,345)\\
Final sample & 79,638\\\midrule
\gmc Panel A2: AAA \\\midrule
Number of observations & 79,638\\
Delete: & (39,540)\\
Delete: & (7,979) \\
Final sample & 32,119 \\\midrule
\gmc Panel B1: BBB \\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule
\gmc Panel B2: BBB\\\midrule
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Number of observations  & 1,75,650\\
Delete: & (78,420)\\
Delete: & (47,136)\\
Delete: & (7,178)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Delete: & (32)\\
Final sample & 42,884\\\midrule\bottomrule
\end{longtblr}
\end{document}

話題から外れますが、1,75,650 という数字はかなり奇妙です。