表格中负号的问题

Question

下表中：

\documentclass[12pt]{article}
\usepackage{tabularx}
\usepackage{multirow}
\usepackage{float}
\begin{document}
    \begin{table}[H]
        \centering
        \small
        \begin{tabular}{|c|c|c|c|c|c|}
            \hline
            \textbf{Representation}     & \textbf{Configuration}             & \textbf{Correlation} & \textbf{p-value}                 & \textbf{\begin{tabular}[c]{@{}c@{}}Correlation\\ coefficient\end{tabular}} & \textbf{\begin{tabular}[c]{@{}c@{}}\# classes with\\ significant\\ correlation\end{tabular}} \\ \hline
            \multirow{6}{*}{Test suite} & \multirow{6}{*}{Without reduction} & Coverage and AC      & \multirow{6}{*}{\textless 0.001} & $−0.18$                                                      & 9                                                                                          \\ \cline{3-3} \cline{5-6} 
            &                                    & Coverage and ND      &                                  & $−$ 0.2                                                                       & 4                                                                                          \\ \cline{3-3} \cline{5-6} 
            &                                    & Coverage and NV      &                                  & −0.19                                                                      & 9                                                                                          \\ \cline{3-3} \cline{5-6} 
            &                                    & Coverage and IC      &                                  & 0.21                                                                       & 8                                                                                          \\ \cline{3-3} \cline{5-6} 
            &                                    & Coverage and PIC     &                                  & 0.2                                                                        & 4                                                                                          \\ \cline{3-3} \cline{5-6} 
            &                                    & Coverage and DBI     &                                  & 0.21                                                                       & 9                                                                                          \\ \hline
        \end{tabular}
    \end{table}
\end{document}

列中的负数Correlation coefficient显示为正数。-不显示负号。我尝试了两种$-18$方法，$-$ 0.2但都没有用。

如何解决这个问题？

Answer 1

有些减号是 Unicode 短划线。将美元符号改为连字符后，错误就解决了。

不过，我建议你加载希尼奇或者列将列对齐到小数点处。此外，书签，更多空间和无垂直线将提高可读性。参见示例 2。

示例 1

\documentclass{article}
\usepackage{multirow}
\usepackage[margin=2cm]{geometry}
\begin{document}

\begin{table}
\centering\small
\begin{tabular}{|c|c|c|c|c|c|}
\hline
  \textbf{Representation} 
  & \textbf{Configuration}
  & \textbf{Correlation}
  & \textbf{p-value} 
  & \textbf{\begin{tabular}[c]{@{}c@{}}Correlation\\ coefficient\end{tabular}}
  & \textbf{\begin{tabular}[c]{@{}c@{}}\# classes with\\ significant\\ correlation\end{tabular}}\\
\hline
  \multirow{6}{*}{Test suite}
  & \multirow{6}{*}{Without reduction} 
  & Coverage and AC
  & \multirow{6}{*}{\textless 0.001}
  & $-0.18$
  & 9\\
\cline{3-3} \cline{5-6}
  &    & Coverage and ND  &    & $-$0.2  & 4 \\
\cline{3-3} \cline{5-6}
  &    & Coverage and NV  &    & $-$0.19 & 9 \\
\cline{3-3} \cline{5-6} 
  &    & Coverage and IC  &    &    0.21 & 8 \\
\cline{3-3} \cline{5-6}
  &    & Coverage and PIC &    &    0.2  & 4 \\
\cline{3-3} \cline{5-6} 
  &    & Coverage and DBI &    &    0.21 & 9 \\
\hline
\end{tabular}
\end{table}

\end{document}

示例 2

和书签，列并且没有垂直空格。d-column处于数学模式，因此不需要 $。但是，标题必须括在 中\multicolumn。根据我的教科书，表格标题应底部对齐，而不是垂直居中。您也可以将字体大小减小一级。

\documentclass{article}
\usepackage{multirow, dcolumn, booktabs}
\usepackage[margin=2cm]{geometry}

\begin{document}

\begin{table}[th!]
\centering\small
\begin{tabular}{@{}cclcD{.}{.}{-2}c@{}}
\toprule
  \textbf{Representation}
  &\textbf{Configuration}
  &\multicolumn{1}{>{\centering\arraybackslash\hspace{0pt}}b{2.5cm}}{\bfseries Correlation}
  &\textbf{p-value}
  &\multicolumn{1}{>{\centering\arraybackslash\hspace{0pt}}b{2.5cm}}{\bfseries Correlation coefficient}
  &\multicolumn{1}{>{\centering\arraybackslash\hspace{0pt}}b{2.5cm}}{\bfseries \# classes with significant correlation}\\
\midrule
  \multirow{6}{*}{Test suite}
  &\multirow{6}{*}{Without reduction}
  & Coverage and AC
  &\multirow{6}{*}{\textless 0.001}
  & -0.18
  &9 \\ 
  &    & Coverage and ND  &    & -0.2   & 4 \\ 
  &    & Coverage and NV  &    & -0.19  & 9 \\ 
  &    & Coverage and IC  &    &  0.21  & 8 \\ 
  &    & Coverage and PIC &    &  0.2   & 4 \\ 
  &    & Coverage and DBI &    &  0.21  & 9 \\ 
\bottomrule
\end{tabular}
\end{table}

\end{document}