我正在使用 datatool 包。我的项目中生成了几个包含数据的 csv 文件，我创建了 index.csv 以使用 Nested \ DTLforeach。
我不明白如何根据 csv 文件的数量来组装 3x3 / 3x4 或 3x5 矩阵。
\documentclass[a4paper]{article}
\usepackage{pgf}
\usepackage{pgffor}
\usepackage{datatool}
\begin{document}
\begin{filecontents}{index.csv}
File
1.csv
2.csv
3.csv
4.csv
5.csv
6.csv
7.csv
\end{filecontents}
\begin{filecontents}{1.csv}
Header 1
image 1
description 1
\end{filecontents}
\begin{filecontents}{2.csv}
Header 2
image 2
description 2
\end{filecontents}
\begin{filecontents}{3.csv}
Header 3
image 3
description 3
\end{filecontents}
\begin{filecontents}{4.csv}
Header 4
image 4
description 4
\end{filecontents}
\begin{filecontents}{5.csv}
Header 5
image 5
description 5
\end{filecontents}
\begin{filecontents}{6.csv}
Header 6
image 6
description 6
\end{filecontents}
\begin{filecontents}{7.csv}
Header 7
image 7
description 7
\end{filecontents}
\DTLloaddb{index}{index.csv}
\DTLforeach{index}{\theFile=File}{
\DTLloaddb{\theFile}{\theFile}
\DTLforeach{\theFile}{\theHeader=\theFile}{\theHeader & \theHeader & \theHeader \\}
}
\end{document}
如何形成一个矩阵，以便它检测每个 csv 文件的标题并将其替换到表格环境中。我不知道如何实现这个结果，感谢您的帮助。
答案1
尝试一下这个代码。
代码：
该Ncols参数设置文本宽度的列数。该图是用Ncols=3 创建的。
首先，我们将文件名加载到数据库中index。它们将按相同的顺序显示。文件名无关紧要。
然后我们浏览所有索引条目，打开命名文件并加载数据库1，，，2...3等等，使用该[noheader]选项。
为了显示其内容，我们使用内部循环创建另一个表格并将其插入到minipage具有自动调整宽度的表格中，以便能够将其插入Ncols到页面上文本的宽度中，作为外部表格的一行。
\documentclass[a4paper]{article}
\usepackage{datatool}
\usepackage{ifthen}% added <<
\usepackage{calculator}% added <<
\newcounter{nrow}
\setcounter{nrow}{1}
\newcounter{Ncols}
\setcounter{Ncols}{3} % set the number of columns in text width <<<<<<<<<<<<<<<<<<<<<<<
\newlength{\Mwidth}
\DIVIDE{1}{\value{Ncols}}{\Wcmd}
\LENGTHSUBTRACT{\Wcmd\textwidth}{1.5em}{\Mwidth}
\begin{document}
\begin{filecontents}{index.csv}
File
ONE.csv
TWO.csv
alpha.csv
beta.csv
gamma.csv
simon.csv
dispa.csv
\end{filecontents}
\begin{filecontents}{ONE.csv}
Header 1
image 1
description 1
xxxx
\end{filecontents}
\begin{filecontents}{TWO.csv}
Header 2
image 2
description 2
\end{filecontents}
\begin{filecontents}{alpha.csv}
Header 3
image 3
description 3
\end{filecontents}
\begin{filecontents}{beta.csv}
Header 4
image 4
description 4
\end{filecontents}
\begin{filecontents}{gamma.csv}
Header 5
image 5
description 5
\end{filecontents}
\begin{filecontents}{simon.csv}
Header 6
image 6
description 6
\end{filecontents}
\begin{filecontents}{dispa.csv}
Header 7
image 7
description 7
\end{filecontents}
\DTLloaddb{index}{index.csv}
\noindent\begin{tabular}{@{}l@{}}
\DTLforeach{index}{\one=File}{%
\DTLloaddb[noheader]{\thenrow}{\one}%
\INTEGERDIVISION{\value{nrow}}{\value{Ncols}}{\sola}{\solb}
\ifthenelse{\solb =1}{\\}{}% Ncols m1nipages per line
\begin{minipage}[t]{\Mwidth}% auto adjusted width
\noindent%
\begin{tabular}[t]{@{}p{\Mwidth}@{}}%
\DTLforeach{\thenrow}{\one=Column1}{\one \\}% display file content
\end{tabular}%
\stepcounter{nrow}%
\end{minipage}\hspace*{2em}%
}
\end{tabular}
\end{document}
使用 \setcounter{Ncols}{4}
更新对于更长的描述（1）写一行长代码（如#5）或（2）在文件中添加更多行.csv（如#1）
测试此代码。
\documentclass[a4paper]{article}
\usepackage{datatool}
\usepackage{ifthen}% added <<
\usepackage{calculator}% added <<
\newcounter{nrow}
\setcounter{nrow}{1}
\newcounter{Ncols}
\setcounter{Ncols}{3} % set the number of columns in text width <<<<<<<<<<<<<<<<<<<<<<<
\newlength{\Mwidth}
\DIVIDE{1}{\value{Ncols}}{\Wcmd}
\LENGTHSUBTRACT{\Wcmd\textwidth}{2.2em}{\Mwidth}
\begin{document}
\begin{filecontents}{index.csv}
File
ONE_long.csv
TWO.csv
alpha.csv
beta.csv
gamma_long.csv
simon.csv
dispa.csv
\end{filecontents}
\begin{filecontents}{ONE_long.csv}
Header 1
image 1
description 1a
description 1b
description 1c
\end{filecontents}
\begin{filecontents}{TWO.csv}
Header 2
image 2
description 2
\end{filecontents}
\begin{filecontents}{alpha.csv}
Header 3
image 3
description 3
\end{filecontents}
\begin{filecontents}{beta.csv}
Header 4
image 4
description 4
\end{filecontents}
\begin{filecontents}{gamma_long.csv}
Header 5
image 5
a very long long description 5a
\end{filecontents}
\begin{filecontents}{simon.csv}
Header 6
image 6
description 6
\end{filecontents}
\begin{filecontents}{dispa.csv}
Header 7
image 7
description 7
\end{filecontents}
\DTLloaddb{index}{index.csv}
\section*{Long Descriptions}
\noindent\begin{tabular}{@{}l@{}}
\DTLforeach{index}{\one=File}{%
\DTLloaddb[noheader]{\thenrow}{\one}%
\INTEGERDIVISION{\value{nrow}}{\value{Ncols}}{\sola}{\solb}
\ifthenelse{\solb =1}{\\}{}% Ncols m1nipages per line
\begin{minipage}[t]{\Mwidth}% auto adjusted width
\noindent%
\begin{tabular}[t]{@{}p{\Mwidth}@{}}%
\DTLforeach{\thenrow}{\one=Column1}{\one \\}% display file content
\end{tabular}%
\stepcounter{nrow}%
\end{minipage}\hspace*{2em}%
}
\end{tabular}
\end{document}
答案2
这是一个不依赖于datatool
\begin{filecontents}{index.csv}
File
1.csv
2.csv
3.csv
4.csv
5.csv
6.csv
7.csv
\end{filecontents}
\begin{filecontents}{1.csv}
Header 1
image 1
description 1
\end{filecontents}
\begin{filecontents}{2.csv}
Header 2
image 2
description 2
\end{filecontents}
\begin{filecontents}{3.csv}
Header 3
image 3
description 3
\end{filecontents}
\begin{filecontents}{4.csv}
Header 4
image 4
description 4
\end{filecontents}
\begin{filecontents}{5.csv}
Header 5
image 5
description 5
\end{filecontents}
\begin{filecontents}{6.csv}
Header 6
image 6
description 6
\end{filecontents}
\begin{filecontents}{7.csv}
Header 7
image 7
description 7
\end{filecontents}
\documentclass[a4paper]{article}
\usepackage{booktabs}
\ExplSyntaxOn
\NewDocumentCommand{\presentdata}{O{3}m}
{% #1 = number of columns, default 3
% #2 = file name
\selton_presentdata:nn { #1 } { #2 }
}
\ior_new:N \g__selton_presentdata_ior
\seq_new:N \l__selton_presentdata_files_seq
\seq_new:N \l__selton_presentdata_items_seq
\int_new:N \l__selton_presentdata_cols_int
\tl_new:N \l__selton_presentdata_body_tl
\cs_new_protected:Nn \selton_presentdata:nn
{
% clear the token list containing the body
\tl_clear:N \l__selton_presentdata_body_tl
% remember the desired number of columns
\int_set:Nn \l__selton_presentdata_cols_int { #1 }
% open the file to read the file names
\ior_open:Nn \g__selton_presentdata_ior { #2 }
% now we store the file names
\seq_clear:N \l__selton_presentdata_files_seq
\ior_map_inline:Nn \g__selton_presentdata_ior
{
\seq_put_right:Nx \l__selton_presentdata_files_seq { \tl_trim_spaces:n { ##1 } }
}
% remove blank items
\seq_remove_all:Nn \l__selton_presentdata_files_seq { }
% remove the first item
\seq_pop_left:NN \l__selton_presentdata_files_seq \l_tmpa_tl
% pad the sequence to a multiple of #2 with blanks
\int_compare:nF { \int_mod:nn { \seq_count:N \l__selton_presentdata_files_seq } { #1 } == 0 }
{% not a multiple, pad
\prg_replicate:nn
{ #1 - \int_mod:nn { \seq_count:N \l__selton_presentdata_files_seq } { #1 } }
{ \seq_put_right:Nn \l__selton_presentdata_files_seq { } }
}
% close the file
\ior_close:N \g__selton_presentdata_ior
% now populate the body of the table
\seq_map_indexed_function:NN \l__selton_presentdata_files_seq \__selton_presentdata_entry:nn
% and typeset the table
\begin{tabular}{@{} *{#1}{l} @{}}
\toprule
\tl_use:N \l__selton_presentdata_body_tl
\bottomrule
\end{tabular}
}
\cs_new_protected:Nn \__selton_presentdata_entry:nn
{%#1 is the item number, #2 is the item
\tl_if_blank:nF { #2 }
{% the item is not empty, open the file and clear the sequence
\ior_open:Nn \g__selton_presentdata_ior { #2 }
\seq_clear:N \l__selton_presentdata_items_seq
% populate the sequence
\ior_map_inline:Nn \g__selton_presentdata_ior
{
\seq_put_right:Nn \l__selton_presentdata_items_seq { ##1 }
}
% remove blank items
\seq_remove_all:Nn \l__selton_presentdata_items_seq { }
% close the file
\ior_close:N \g__selton_presentdata_ior
% typeset a nested table
\tl_put_right:Nx \l__selton_presentdata_body_tl
{
\exp_not:N \begin{tabular}[t]{@{}l@{}}
\seq_use:Nn \l__selton_presentdata_items_seq { \\ }
\exp_not:N \end{tabular}
}
}
% add & or \\
\int_compare:nTF { \int_mod:nn { #1 } { \l__selton_presentdata_cols_int } == 0 }
{% multiple of the number of columns
\tl_put_right:Nn \l__selton_presentdata_body_tl { \\ }
% if not at the last cell, issue \addlinespace
\int_compare:nT { #1 < \seq_count:N \l__selton_presentdata_files_seq }
{
\tl_put_right:Nn \l__selton_presentdata_body_tl { \addlinespace }
}
}
{% not a multiple
\tl_put_right:Nn \l__selton_presentdata_body_tl { & }
}
}
\ExplSyntaxOff
\begin{document}
\presentdata{index.csv}
\bigskip
\presentdata[4]{index.csv}
\end{document}
