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我正在尝试复制用于数组/表格单元格的计数器使用collcell
。然而,收集和打印机制(以及任何必要的调节)变得不同步。
\documentclass{article}
\usepackage{collcell}
\makeatletter
\def\insert@column{%
\the@toks \the \@tempcnta
\global\advance\c@tabcol\@ne
\ignorespaces \@sharp \unskip
\the@toks \the \count@ \relax}
\let\old@arraycr\@arraycr
\def\@arraycr{\global\c@tabcol\z@\global\advance\c@tabrow\@ne\old@arraycr}
\let\old@tabarray\@tabarray
\def\@tabarray{\global\c@tabrow\@ne\global\c@tabcol\z@\old@tabarray}
\makeatother
\newcounter{tabcol}\newcounter{tabrow}
\newcommand{\tabrowcol}[1]{(\thetabrow,\thetabcol)}
\newcolumntype{C}{ >{\collectcell\tabrowcol}c<{\endcollectcell} }
\begin{document}
\[
% Correct row/column indexing
\begin{array}{ c c c }
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) \\
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) \\
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol)
\end{array}
\qquad
% Incorrect row/column indexing
\begin{array}{ C C C }
x & x & x \\
x & x & x \\
x & x & x
\end{array}
\]
\end{document}
我该如何调整collcell
才能使右矩阵与左矩阵相匹配?
答案1
您必须先设置列计数器,然后再执行\collcell
。接下来,您必须在处理完行之后延迟计数器的(重新)设置。
\documentclass{article}
\usepackage{collcell}
\usepackage{xpatch}
\makeatletter
\def\insert@column{%
\the@toks \the \@tempcnta
\global\advance\c@tabcol\@ne
\ignorespaces \@sharp \unskip
\the@toks \the \count@ \relax}
\xpatchcmd{\@xarraycr}
{\cr}
{\cr\noalign{\global\c@tabcol\z@\global\advance\c@tabrow\@ne}}{}{}
\xpatchcmd{\@xargarraycr}
{\cr}
{\cr\noalign{\global\c@tabcol\z@\global\advance\c@tabrow\@ne}}{}{}
\xpatchcmd{\@yargarraycr}
{\cr}
{\cr\noalign{\global\c@tabcol\z@\global\advance\c@tabrow\@ne}}{}{}
\let\old@tabarray\@tabarray
\def\@tabarray{\global\c@tabrow\@ne\global\c@tabcol\z@\old@tabarray}
\makeatother
\newcounter{tabcol}\newcounter{tabrow}
\newcommand{\tabrowcol}[1]{(\thetabrow,\thetabcol)}
\newcolumntype{C}{ >{\stepcounter{tabcol}\collectcell\tabrowcol}c<{\endcollectcell} }
\begin{document}
\[
% Correct row/column indexing
\begin{array}{ c c c }
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) \\
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) \\
(\thetabrow,\thetabcol) & (\thetabrow,\thetabcol) & (\thetabrow,\thetabcol)
\end{array}
\qquad
% Incorrect row/column indexing
\begin{array}{ C C C }
x & x & x \\
x & x & x \\
x & x & x
\end{array}
\]
\end{document}
必须对负责管理可选参数的宏进行类似的修补\\
。