表格旁边有一个不规则的“%”符号。如何删除它？

Question 1

问题发生的原因在于您告诉 LaTeX 这%不是注释字符。删除所有注释字符（代码中不需要任何注释字符）即可解决问题。

\begin{filecontents*}{\jobname.csv}
"Year","Base","RoundLot","TransactionCost","TransactionRoundLot"
2001,"3.41%","3.42%","3.35%","3.35%"
2002,"-10.46%","-10.45%","-10.50%","-10.49%"
2003,"22.58%","22.57%","22.53%","22.52%"
2004,"20.03%","20.02%","19.98%","19.97%"
\end{filecontents*}

\documentclass[titlepage]{report}
\usepackage{csvsimple} % Generates table from .csv

\newcommand{\respectpercent}{\catcode`\%=12\relax}
\newcommand{\ignoredblquote}{\catcode`\"=9\relax}

\begin{document}

\begin{table}
\centering

\csvreader[
  no head,
  tabular=|c|r|r|r|r|,
  before table=\respectpercent\ignoredblquote,
  table head={
    \hline
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Year} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Base} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Round Lot \\ of 100 \\ Shares} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per~Share} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per Share and \\ Round Lot \\ of 100 Shares} \\
    \hline
  },
  late after line = \\\hline,
  filter expr={
    test{\ifnumgreater{\thecsvinputline}{1}}
  },
]{\jobname.csv}%
  {1=\one, 2=\two, 3=\three, 4=\four, 5=\five}
  {$\one$ & $\two$ & $\three$ & $\four$ & $\five$}

\caption{Market Cost Assumption}
\label{tab:Slippage}

\end{table}

\end{document}

我更改了 csv 文件的名称，只是为了使示例自成一体。出于同样的原因，我还删除了未使用的包和命令。

避免该[H]选项。我也进行了\ignoredblquote类似定义\respectpercent，因此不需要组。

请注意，中的空格\label不会被忽略。

Answer

问题发生的原因在于您告诉 LaTeX 这%不是注释字符。删除所有注释字符（代码中不需要任何注释字符）即可解决问题。

\begin{filecontents*}{\jobname.csv}
"Year","Base","RoundLot","TransactionCost","TransactionRoundLot"
2001,"3.41%","3.42%","3.35%","3.35%"
2002,"-10.46%","-10.45%","-10.50%","-10.49%"
2003,"22.58%","22.57%","22.53%","22.52%"
2004,"20.03%","20.02%","19.98%","19.97%"
\end{filecontents*}

\documentclass[titlepage]{report}
\usepackage{csvsimple} % Generates table from .csv

\newcommand{\respectpercent}{\catcode`\%=12\relax}
\newcommand{\ignoredblquote}{\catcode`\"=9\relax}

\begin{document}

\begin{table}
\centering

\csvreader[
  no head,
  tabular=|c|r|r|r|r|,
  before table=\respectpercent\ignoredblquote,
  table head={
    \hline
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Year} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Base} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Round Lot \\ of 100 \\ Shares} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per~Share} &
    \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per Share and \\ Round Lot \\ of 100 Shares} \\
    \hline
  },
  late after line = \\\hline,
  filter expr={
    test{\ifnumgreater{\thecsvinputline}{1}}
  },
]{\jobname.csv}%
  {1=\one, 2=\two, 3=\three, 4=\four, 5=\five}
  {$\one$ & $\two$ & $\three$ & $\four$ & $\five$}

\caption{Market Cost Assumption}
\label{tab:Slippage}

\end{table}

\end{document}

我更改了 csv 文件的名称，只是为了使示例自成一体。出于同样的原因，我还删除了未使用的包和命令。

避免该[H]选项。我也进行了\ignoredblquote类似定义\respectpercent，因此不需要组。

请注意，中的空格\label不会被忽略。

Question 2

救援服务：

\begin{filecontents*}{\jobname.csv}
"Year","Base","RoundLot","TransactionCost","TransactionRoundLot"
2001,"3.41%","3.42%","3.35%","3.35%"
2002,"-10.46%","-10.45%","-10.50%","-10.49%"
2003,"22.58%","22.57%","22.53%","22.52%"
2004,"20.03%","20.02%","19.98%","19.97%"
\end{filecontents*}
\documentclass[titlepage]{report}
\usepackage{graphicx}    
\usepackage{csvsimple} % Generates table from .csv

\newcommand{\csvloopx}[2][]{\csvloop{#1,#2}}
\newcommand{\csvautotabularx}[2][]{\csvloopx[#1]{autotabular={#2}}}
\newcommand{\respectpercent}{\catcode`\%=12\relax}

\usepackage{float}

\newcommand{\me}[1]{#1}

\begin{document}



\begin{table}[H]

    \begin{center}
    \me{\begingroup\catcode`"=9
     \csvreader[no head, tabular=|c|r|r|r|r|,%
        before table=\respectpercent,%
        table head=\hline \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Year}%
                 & \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Base}% 
                 & \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Round Lot \\ of 100 \\ Shares}% 
                 & \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per~Share}%  
                 & \multicolumn{1}{|p{2.5cm}|}{\centering \bfseries Transaction Cost \\ of \$0.01 \\ per Share and \\ Round Lot \\ of 100 Shares}\\\hline,% 
        late after line = \\\hline,%
            filter expr={
                test{\ifnumgreater{\thecsvinputline}{1}}}]%
        {\jobname.csv}%
        {1=\one, 2=\two, 3=\three, 4=\four, 5=\five}%
        {$\one$ & $\two$ & $\three$ & $\four$ & $\five$}%
    \endgroup}%
    \end{center}

    \caption{Market Cost Assumption}
    \label{ tab:Slippage}
\end{table}


\end{document}

话虽如此，我只修复了这个%问题。有关进一步需要改进的内容，请参阅@egreg 的回答。出于同样的原因，我添加了包以使示例可编译，并从@egreg 的回答中float复制了用法。filecontents*

至于解释，这是@egreg给出的。%当 csvtable 开始做表格时，设置为不是注释字符。

较早的%在获取其参数时仍是注释字符\csvreader，因此表现如此。使用该\me方法，我冻结了最后一个的 catcode %，只是为了说明。

但更简单的是使用\relax代替有问题的%来吞噬行尾空间（嗯...无论如何，在关闭段落时，TeX 会删除额外的空格标记，而且你的表格太宽了

Overfull \hbox (70.65941pt too wide) in paragraph at lines 40--42

）

@egreg 指出，前面的那些是不需要的。当 LaTeX 命令有 N 个以括号形式给出的参数时，中间的空格将被忽略……除非以某种特殊方式定义；此外，csvreader 在解析逗号分隔的选项时可能会忽略逗号后的空格。

Answer