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四舍五入到小数点后两位，不带任何包裹。

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四舍五入到小数点后两位，不带任何包裹。

我有下表。我需要对其进行格式化，以便显示的数字四舍五入到小数点后两位。我搜索了一下，发现所有解决方案都涉及使用 Latex 包。我不能使用包（我想是吧？）因为我正在使用 ShareLatex。

\documentclass{article}
\usepackage{booktabs}
\usepackage{tabularx}
\begin{document}
\begin{table}[tbp] \centering%
\newcolumntype{C}{>{\centering\arraybackslash}X}
\caption{Differences}%
{\normalsize
\begin{tabularx}{\textwidth}{lCCCC}
\toprule
Economy&year&nef\_en&gdi\_wer&inf\\\tabularnewline
\midrule\addlinespace[1.5ex]
Belize&2006&4.240267&-7.113768&-11.35403 \tabularnewline
Central African Republic&2014&8.2&25.28281&17.08281 \tabularnewline
Iran, Islamic Rep.&2012&30.5&27.35739&-3.142611 \tabularnewline
Iran, Islamic Rep.&2013&34.78927&39.26636&4.477088 \tabularnewline
Iceland&2009&16.27129&12.00581&-4.265474 \tabularnewline
Kenya&2006&6&14.45373&8.453734 \tabularnewline
Kenya&2007&4.3&9.758881&5.45888 \tabularnewline
Kenya&2008&16.2&26.23982&10.03982 \tabularnewline
Kuwait&2008&6.3&10.58271&4.28271 \tabularnewline
Myanmar&2013&8.876498&5.524279&-3.352219 \tabularnewline
Mongolia&2007&17.70245&9.045246&-8.657202 \tabularnewline
Mongolia&2013&12.5&8.604828&-3.895172 \tabularnewline
Mongolia&2015&1.9&5.775949&3.87595 \tabularnewline
Chad&2011&2.040816&-3.704296&-5.745112 \tabularnewline
Chad&2012&7.512763&14.01821&6.505443 \tabularnewline
\bottomrule \addlinespace[1.5ex]
\end{tabularx}%
}
\end{table}%
\end{document}

答案1

ShareLaTeX 应该与完整发行版一起安装。以下工作和用途siunitx将第 3 至第 5 列四舍五入为小数点后两位（的默认值round-precision）：

在此处输入图片描述

\documentclass{article}

\usepackage{booktabs}
\usepackage{tabularx,siunitx}

\begin{document}

\begin{table}
  \centering
  \caption{Differences}
  \begin{tabularx}{\textwidth}{ X c *{3}{S[round-mode = places]} }
    \toprule
    Economy & year & {nef\_en} & {gdi\_wer} & {inf} \\
    \midrule
    \addlinespace[1.5ex]
    Belize                   & 2006 &  4.240267 & -7.113768 & -11.35403  \\
    Central African Republic & 2014 &  8.2      & 25.28281  &  17.08281  \\
    Iran, Islamic Rep.       & 2012 & 30.5      & 27.35739  &  -3.142611 \\
    Iran, Islamic Rep.       & 2013 & 34.78927  & 39.26636  &   4.477088 \\
    Iceland                  & 2009 & 16.27129  & 12.00581  &  -4.265474 \\
    Kenya                    & 2006 &  6        & 14.45373  &   8.453734 \\
    Kenya                    & 2007 &  4.3      &  9.758881 &   5.45888  \\
    Kenya                    & 2008 & 16.2      & 26.23982  &  10.03982  \\
    Kuwait                   & 2008 &  6.3      & 10.58271  &   4.28271  \\
    Myanmar                  & 2013 &  8.876498 &  5.524279 &  -3.352219 \\
    Mongolia                 & 2007 & 17.70245  &  9.045246 &  -8.657202 \\
    Mongolia                 & 2013 & 12.5      &  8.604828 &  -3.895172 \\
    Mongolia                 & 2015 &  1.9      &  5.775949 &   3.87595  \\
    Chad                     & 2011 &  2.040816 & -3.704296 &  -5.745112 \\
    Chad                     & 2012 &  7.512763 & 14.01821  &   6.505443 \\
    \bottomrule
  \end{tabularx}
\end{table}

\end{document}

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