将 csv 输入到 latex 时手动插入行线

Question

我正在为论文附录制作一个长表格，该表格跨越多页。我希望每行都不要用线标记，除非指定部分。我唯一能想到的方法是将“\hline”放在 csv 中。当我将它放在第四列文本的末尾时，有时会添加一个额外的单元格或添加一个额外的行；当我将“\hline”放在它自己的行中时，它会添加额外的行。是否可以在不添加额外行的情况下指定这些部分标记在 csv 中的位置？

如果可能的话，我希望得到一个可以在 pgfplotstable 和我已经拥有的 csv 输入/格式化代码中工作的答案，因为其他几个包和尝试最终都无法满足我的表格需求。我从这里的答案中改编了一些代码（pgfplotstable；带有标题和重复标题的长表)，如果可能的话，我想继续使用 pgfplotstable - 但这对我来说是一次学习经历，我很感激任何建议。谢谢！

\begin{filecontents*}{SE_example.csv}
\textbf{Section 1:},,,
Item 1 has a long description,2000-2010,Short description here,a 
Item 2 also has a long description,1999-2005,This is a longer description and I need to keep this description long so I can be sure that the table will wrap,b
Item 3 is short,1995-2006,This is some text.,c 
\hline ,,,
\textbf{Section 2:},,,
Item 4,1999-2005,This is some more text.,d
Item 5,1995-2006,Text here,e \\ \hline
\textbf{Section 3:},,,
Item 6,1990-1997,Text text text,f
Item 7,2000-2004,Text text text text text,g \\ \hline
\textbf{Section 4:},,,
Item 8,1990-1997,Text text text,h
Item 9,2000-2004,Text text text text text,i
\end{filecontents*}

\documentclass[12pt, english]{article} 
\usepackage[table]{xcolor}
\definecolor{lightgray}{gray}{0.9}
\usepackage{csvsimple}
\usepackage{longtable}
\usepackage{caption}
\usepackage{setspace}
\usepackage{booktabs}
\usepackage{pgfplotstable}
\usepackage[hmargin=2.54cm, vmargin=2.54cm]{geometry}

\begin{document} 

\pgfkeysifdefined{/pgfplots/table/output empty row/.@cmd}{
% upcoming releases offer this more convenient option:
\pgfplotstableset{
    empty header/.style={
      every head row/.style={output empty row},
        }
    }
}{
   % versions up to and including 1.5.1 need this:
%    \pgfplotstableset{
%        empty header/.style={
%            typeset cell/.append code={%
%                \ifnum\pgfplotstablerow=-1 %
%                    \pgfkeyssetvalue{/pgfplots/table/@cell content}{}%
%                \fi
%            }
%        }
%    }
}

\rowcolors{1}{}{lightgray}
\scriptsize
\pgfplotstabletypeset[
empty header,
header=false,
begin table=\begin{longtable},
every first row/.append style={before row={%
\caption{Description of Policies}%
\label{tab:policies}\\\toprule
\textbf{Policy} &\textbf{Years} &\textbf{Description} &\textbf{Sources} \\ \toprule    
\endfirsthead
%
\multicolumn{4}{l}%
{{\bfseries Description of Policies \thetable\ Continued from previous page}} \\
\toprule 
%
\textbf{Policy} &\textbf{Years} &\textbf{Description} &\textbf{Sources} \\ \toprule      
\endhead
%
\midrule \multicolumn{4}{r}{{Continued on next page}} \\ \bottomrule
\endfoot
%
\midrule
\multicolumn{4}{r}{{Concluded}} \\ \bottomrule
\endlastfoot
}},%
%
end table=\end{longtable},
col sep=comma,
string type,
column type=l,
columns/0/.style={column type=p{6cm}},
columns/1/.style={column type=p{1.3cm}},
columns/2/.style={column type=p{6cm}},
columns/3/.style={column type=p{1cm}},
]{SE_example.csv}
\end{document}

Answer 1

插入\hline到行首。另外您不需要使用\\。

\textbf{Section 1:},,,
Item 1 has a long description,2000-2010,Short description here,a
Item 2 also has a long description,1999-2005,This is a longer description and I need to keep this description long so I can be sure that the table will wrap,b
Item 3 is short,1995-2006,This is some text.,c
\hline\textbf{Section 2:},,,
Item 4,1999-2005,This is some more text.,d
Item 5,1995-2006,Text here,e
\hline\textbf{Section 3:},,,
Item 6,1990-1997,Text text text,f
Item 7,2000-2004,Text text text text text,g
\hline\textbf{Section 4:},,,
Item 8,1990-1997,Text text text,h
Item 9,2000-2004,Text text text text text,i