我无法在使用时显示表格标题PNAStwo 文档类从 2008 年开始（最新版本包含我不想要的打印机标记）。
文档说“图表标题应输入在文档末尾...“但作为标题是显示图形，我希望它们也能显示在表格中。
我希望他们的建议不会对作者构成限制，但看起来是，还是我遗漏了什么？如果不是，有什么解决方法可以采用吗？
\documentclass{pnastwo}
\usepackage{graphicx}
\usepackage{pnastwoF}
\usepackage{amssymb,amsfonts,amsmath}
\开始{文档}
\开始{文章}
\begin{表格}[h]
\开始{表格}{cc}
1 & 2 \\
3 & 4
\end{表格}
\caption{未出现的标题。}
\茶几}
\开始{图}
\caption{确实出现的标题。}
\结束{图}
\结束{文章}
\结束{文档}
答案1
我刚刚遇到了同样的问题。（当尝试制作印刷质量的论文预印本时，这真的很烦人。）在 pnastwo.cls 中搜索后，我发现了以下修复方法：
找到 pnastwo.cls 中的第一行，内容如下
\ifx\@captype\xtable
将其更改为
\ifx\@captype\table
或者，如果您不想触及类文件，您可以将以下内容放入文档的序言中：
% Fix wierd behavior which prevents table captions from appearing for
% tables in the body of the article
\makeatletter
\long\def\@makecaption#1#2{%
\ifx\@captype\table
\let\currtabcaption\relax
\gdef\currtabcaption{
\tabnumfont\relax #1. \tabtextfont\relax#2\par
\vskip\belowcaptionskip
}
\else
\vskip\abovecaptionskip
\sbox\@tempboxa{\fignumfont#1.\figtextfont\hskip.5em\relax #2}%
\ifdim \wd\@tempboxa >\hsize
\fignumfont\relax #1.\figtextfont\hskip.5em\relax#2\par
\else
\global \@minipagefalse
\hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
\fi
\fi
}
\makeatother
补充一点：一旦修复了这个错误，如果您使用 PNAS 双列类来生成生产质量的输出，您几乎肯定会遇到另一个问题，而这个问题是您希望修复的：除非您使用 h “here” 位置定义浮点，否则它会丢失标签，因此所有图形和表格的交叉引用都会中断。这是修复方法，用于直接粘贴到文档序言中。您还可以修补宏 \DonormalEndcol pnastwo.cls，这是 6 次相同的错误...
% And another fix. PNAS class loses the label of floats unless they
% were defined with the [h] option (so not really floats at all). It
% all comes down to wrong scope in the following routine which pushes
% out the floats onto the page. This is the fixed version:
\makeatletter
\def\DonormalEndcol{%
%% top float ==>
\ifx\toporbotfloat\xtopfloat%
%% figure ==>
\ifcaptypefig%
\expandafter\gdef\csname topfloat\the\figandtabnumber\endcsname{%
\vbox{\vskip\PushOneColTopFig%
\unvbox\csname figandtabbox\the\loopnum\endcsname%
\vskip\abovefigcaptionskip%
\csname caption\the\loopnum\endcsname%
\csname letteredcaption\the\loopnum\endcsname%
\csname continuedcaption\the\loopnum\endcsname%
\csname letteredcontcaption\the\loopnum\endcsname
\ifredefining%
\csname label\the\loopnum\endcsname%
\expandafter\gdef\csname topfloat\the\loopnum\endcsname{}\fi}%
\vskip\intextfloatskip%%
\vskip-4pt %% probably an artifact of topskip??
}%
\else%
%% plate ==>
\ifcaptypeplate%
\expandafter\gdef\csname topfloat\the\figandtabnumber\endcsname{%
\vbox{\vskip\PushOneColTopFig%
\unvbox\csname figandtabbox\the\loopnum\endcsname
\vskip\abovefigcaptionskip
\csname caption\the\loopnum\endcsname
\csname letteredcaption\the\loopnum\endcsname
\csname continuedcaption\the\loopnum\endcsname
\csname letteredcontcaption\the\loopnum\endcsname
\ifredefining
\csname label\the\loopnum\endcsname
\expandafter\gdef\csname topfloat\the\loopnum\endcsname{}\fi}
\vskip\intextfloatskip %%
\vskip-4pt %% probably an artifact of topskip??
}%
\else% table ==>
\expandafter\gdef\csname topfloat\the\figandtabnumber\endcsname{%
\vbox{\vskip\PushOneColTopTab %%
\csname caption\the\loopnum\endcsname
\csname letteredcaption\the\loopnum\endcsname
\csname continuedcaption\the\loopnum\endcsname
\csname letteredcontcaption\the\loopnum\endcsname
\vskip\captionskip
\unvbox\csname figandtabbox\the\loopnum\endcsname
\ifredefining
\csname label\the\loopnum\endcsname
\expandafter\gdef\csname topfloat\the\loopnum\endcsname{}\fi
}\vskip\intextfloatskip %% why don't we need this?
\vskip-10pt}
\fi\fi%
%
\else% bottom float
%
\ifcaptypefig
\expandafter\gdef\csname botfloat\the\figandtabnumber\endcsname{%
\vskip\intextfloatskip
\vbox{\unvbox\csname figandtabbox\the\loopnum\endcsname
\vskip\abovefigcaptionskip
\csname caption\the\loopnum\endcsname
\csname letteredcaption\the\loopnum\endcsname%
\csname continuedcaption\the\loopnum\endcsname%
\csname letteredcontcaption\the\loopnum\endcsname%
\vskip\PushOneColBotFig%%
\ifredefining%
\csname label\the\loopnum\endcsname
\expandafter\gdef\csname botfloat\the\loopnum\endcsname{}\fi}}%
\else
\ifcaptypeplate
\expandafter\gdef\csname botfloat\the\figandtabnumber\endcsname{%
\vskip\intextfloatskip
\vbox{\unvbox\csname figandtabbox\the\loopnum\endcsname
\vskip\abovefigcaptionskip
\csname caption\the\loopnum\endcsname
\csname letteredcaption\the\loopnum\endcsname%
\csname continuedcaption\the\loopnum\endcsname%
\csname letteredcontcaption\the\loopnum\endcsname%
\vskip\PushOneColBotFig%%
\ifredefining%
\csname label\the\loopnum\endcsname
\expandafter\gdef\csname botfloat\the\loopnum\endcsname{}\fi}}%
\else% TABLE
\expandafter\gdef\csname botfloat\the\figandtabnumber\endcsname{%
\vskip\intextfloatskip
\vbox{\csname caption\the\loopnum\endcsname
\csname letteredcaption\the\loopnum\endcsname
\csname continuedcaption\the\loopnum\endcsname
\csname letteredcontcaption\the\loopnum\endcsname%
\vskip.5\intextfloatskip
\unvbox\csname figandtabbox\the\loopnum\endcsname%
\vskip\PushOneColBotTab
\ifredefining%
\csname label\the\loopnum\endcsname
\expandafter\gdef\csname botfloat\the\loopnum\endcsname{}\fi}}%
\fi\fi\fi}
\makeatother
答案2
与课程一起分发的模板文件显示
%----------------------------------------------------------------------------------------
% FIGURES AND TABLES
%----------------------------------------------------------------------------------------
%% Adding Figure and Table References
%% Be sure to add figures and tables after \end{article}
%% and before \end{document}
以下是示例：
\documentclass{pnastwo}
\usepackage{graphicx}
%\usepackage{pnastwoF} % this is not required
\usepackage{amssymb,amsfonts,amsmath}
\usepackage{lipsum} % just for the example
\begin{document}
\title{X}
\author{A. Uthor\affil{1}{University of Nowhere}}
\contributor{Submitted to Proceedings of the National Academy of Sciences
of the United States of America}
%----------------------------------------------------------------------------------------
\maketitle % The \maketitle command is necessary to build the title page
\begin{article}
\lipsum
\end{article}
\begin{table}[h]
\caption{A caption that appears.}
\begin{tabular}{cc}
1 & 2 \\
3 & 4
\end{tabular}
\end{table}
\begin{figure}[h]
\caption{A caption that does appear.}
\end{figure}
\end{document}
注意，表格标题的排版宽度与tabular环境宽度相同。为什么？我不知道。