左对齐 longtable 标题从表格的起始点开始

Question

我无法将longtable表 1 中的标题左对齐，从相同的表对象左边距开始。我本质上是在尝试实现我在表 2 中所做的操作。

我偶然看到一个建议使用的帖子LTcapwidth。当我手动更改textwidth因素（例如\setlength{\LTcapwidth}{.76\textwidth}MWE 中的表 1）时，这种方法有效，但是，我正在处理包含大量因素的手稿，longtables并且希望使用更灵活的解决方案，而不是手动调整\textwidth所有因素。

最小工作示例

\documentclass{article}

\usepackage{multirow}
\usepackage{longtable}
\usepackage{array}
\usepackage{booktabs}
\usepackage{floatrow}

\begin{document}

\section{Table Woes}

%%%\setlength{\LTcapwidth}{.76\textwidth}
\begin{longtable}[c]{
  @{} 
  >{\arraybackslash}p{0.10\linewidth}
  >{\arraybackslash}p{0.10\linewidth}
  >{\arraybackslash}p{0.10\linewidth}
  >{\arraybackslash}p{0.10\linewidth}
  >{\arraybackslash}p{0.10\linewidth}
  >{\arraybackslash}p{0.10\linewidth}
  @{}
}
  \caption{Caption needs to be left aligned beginning at same starting position as table}
  \label{tab:longtable_captionlable} \\
  \toprule
  Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\ 
  \midrule
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  \bottomrule
\end{longtable}


\begin{table}[h]
  \begin{floatrow}
  \ttabbox
  {\caption{Using floatrow, caption is properly left aligned from the beginning of left table margin.}\label{tab:table_captionlable}}
  {\begin{tabular}{|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|}
  \hline
  Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\ 
  \hline
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  \hline
  \end{tabular}}%
  \end{floatrow}
\end{table}
\end{document}

Answer 1

由于您正在使用floatrow，因此您可以使用此包提供的功能。来自文档：

7.2 longtable 包

7.2.1 floatrow 包中的新增内容

(...) 如果您写LTcapwidth=table或LTcapwidth=contents，您将获得等于表格宽度的标题宽度。

您可以使用 为longtables设置此键\floatsetup[longtable]。代码：

\documentclass{article}

\usepackage{longtable}
\usepackage{array}
\usepackage{booktabs}
\usepackage{floatrow}

\floatsetup[longtable]{LTcapwidth=table}

\begin{document}

\section{Table Works}

\begin{longtable}[c]{@{}*{6}{>{\arraybackslash}p{0.10\linewidth}}@{}}
  \caption{Caption needs to be left aligned beginning at same starting
  position as table\label{tab:longtable_captionlable}}\\
  \toprule
  Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\ 
  \midrule
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  1 & 2 & 3 & 4 & 5 & 6 \\ 
  \bottomrule
\end{longtable}

\begin{table}[h]
  \ttabbox{%
    \caption{Using floatrow, caption is properly left aligned from the
      beginning of left table margin.}\label{tab:table_captionlable}%
  }{%
    \begin{tabular}{*{6}{|p{0.10\textwidth}}|}
      \hline
      Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\
      \hline
      1 & 2 & 3 & 4 & 5 & 6 \\
      1 & 2 & 3 & 4 & 5 & 6 \\
      1 & 2 & 3 & 4 & 5 & 6 \\
      \hline
    \end{tabular}%
  }%
\end{table}
\end{document}

另请注意，您可以*{num}{cols}在表格列规范中使用 -expression 来提高代码的可读性。

Answer 2

这是一个简单的解决方案：

\documentclass{article}

\usepackage{multirow}
\usepackage{longtable}
\usepackage{array}
\usepackage{booktabs}
\usepackage{floatrow}
\begin{document}

\section{Table Woes}


{\setlength{\LTcapwidth}{\dimexpr0.6\textwidth + 10\tabcolsep\relax}
\begin{longtable}{@{}*{6}{>{\arraybackslash}p{0.10\linewidth}}@{}}
 \caption{Caption needs to be left aligned beginning at same starting position as table}
 \label{tab:longtable_captionlable}\\
\endhead
  \toprule
  Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\
  \midrule
  1 & 2 & 3 & 4 & 5 & 6 \\
  1 & 2 & 3 & 4 & 5 & 6 \\
  1 & 2 & 3 & 4 & 5 & 6 \\
  \bottomrule
\end{longtable}}


\begin{table}[h]
  \begin{floatrow}
  \ttabbox
  {\caption{Using floatrow, caption is properly left aligned from the beginning of left table margin.}\label{tab:table_captionlable}}
  {\begin{tabular}{|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|p{0.10\textwidth}|}
  \hline
  Col 1 & Col 2 & Col 3 & Col 4 & Col 5 & Col 6 \\
  \hline
  1 & 2 & 3 & 4 & 5 & 6 \\
  1 & 2 & 3 & 4 & 5 & 6 \\
  1 & 2 & 3 & 4 & 5 & 6 \\
  \hline
  \end{tabular}}%
  \end{floatrow}
\end{table}

\end{document}