我不明白这个错误。 \foreach 中的变量数量有限制吗？

Question

如果我在最后一行使用 \markthree，它总是会发出错误，见下文。错误是

! 缺失数字，视为零。{ l.60 }

这里应该有一个数字；我0'. (If you can't figure out why I needed to see a number, look up在 TeXbook 索引中插入了“奇怪的错误”。)

! 非法计量单位（插入 pt）。{ l.60 }

{Personal Total $=$ Personal mark $+$ Group total mark \vskip1mm [20]} &\pgfmathparse{\markone+\groupmark}\pgfmathresult &\pgfmathparse{\marktwo+\groupmark}\pgfmathprint{\pgfmathresult} &\pgfmathparse{\groupmark+\markthree}\pgfmathprint{\pgfmathresult} \\[5mm]

如果我删除\markthree此行，它就可以正常工作。我不明白问题是什么。是因为命令中使用的变量数量有限制吗\foreach？

\documentclass[multi=true,tikz]{standalone}
\usepackage{multirow}
\usepackage{multicol}
\usepackage{ctable}
\usepackage{array}
\usepackage{pgffor}
\usepackage{tikz}
\usetikzlibrary{shapes.arrows,chains,positioning,calc,}
%opening
\standaloneenv{tikzpicture, frame}
\date{}
\renewcommand{\arraystretch}{1.5}
\begin{document}
    
%\begin{tikzpicture}
%   \node (1) {};
    \foreach \groupnum/\grouptitle/\feedback/\groupmark/\pone/\markone/\ptwo/\marktwo/\pthree/\markthree in {
        1/title1/
            {feedbackone}
            /{11}/name1/{5}/name2/{5}/name3/{4},
        6/{}/{}/{0}/name1/{}/name2/{}/{}/{}
    }{
%   \node (\groupnum)[below=10 mm of current bounding box]{
    \begin{tikzpicture}
    \node (title) [below=10mm of current bounding box, text width = 18cm, align = flush center, font=\Large\bfseries]{marking proforma};    
\node (table) [below=5mm of title, text width = 25cm]{  
\begin{tabular}{|>{\centering}m{5cm} |m{6cm} |m{6cm} |m{6cm}|}
    \toprule
    \hline  
    Group Number: & \multicolumn{3}{c|}{\bfseries\groupnum}\\
    \hline
    Presentation title: & \multicolumn{3}{c|}{\large\textbf{\color{blue}\grouptitle}}\\
    \hline


        Feedback & \multicolumn{3}{p{18cm}|}{\feedback}\\[5cm]
    \hline
    Group Total [15]&  \multicolumn{3}{c|}{\groupmark}\\[5mm]
    \hline
        Presenter & \multicolumn{1}{c|}{\bfseries\pone}  & \multicolumn{1}{c|}{\bfseries\ptwo} &   \multicolumn{1}{c|}{\bfseries\pthree} \\
    \hline
    Presenter personal mark ([5])&\multicolumn{1}{c|}{\markone}  &\multicolumn{1}{c|}{\marktwo}  & \multicolumn{1}{c|}{\markthree}\\[5mm]
    \hline
    {Personal Total $=$ Personal mark $+$ Group total mark \vskip1mm [20]} &\pgfmathparse{\markone+\groupmark}\pgfmathresult &\pgfmathparse{\marktwo+\groupmark}\pgfmathprint{\pgfmathresult} &\pgfmathparse{\groupmark+\markthree}\pgfmathprint{\pgfmathresult} \\[5mm]
    \hline
    \bottomrule
\end{tabular}};
\end{tikzpicture}
}
\end{document}

Answer 1

使用 10 个变量没有问题。问题在于\pgfmathparse{\groupmark+\markthree}接收的{}不是数字。

经过以下更改，您的代码就可以编译了：

\foreach \groupnum/\grouptitle/\feedback/\groupmark/\pone/\markone/\ptwo/\marktwo/\pthree/\markthree in {
    1/title1/
        {feedbackone}
        /{11}/name1/{5}/name2/{5}/name3/{4},
    6/{}/{}/{0}/name1/{}/name2/{}/{}/0 % <-- Notice change here
}{