5

For a tabular environment with csvsimple I would like to set the number of rows specifically.

This example is an attempt to show only the first two rows:

\documentclass{article}
\usepackage{csvsimple,filecontents}

\begin{filecontents*}{scientists.csv}
    name,surname,age
    Albert,Einstein,133
    Marie,Curie,145
    Thomas,Edison,165
\end{filecontents*}

\begin{document}
    \csvreader[tabular=|l|l|c|,
    table head=\hline & Name & Age\\\hline,
    late after line=\\\hline]%
    {scientists.csv}{name=\name,surname=\surname,age=\age}%
    {\ifnum\thecsvrow<2 \thecsvrow & \surname~\name & \age \else \fi}%
\end{document}

Should mention that I have little to no experience with \ifnum

Joost Döbken
  • 795

1 Answers1

7

There are several ways the achieve your goal. One would be to use the filter option to accept only the first two lines. filter uses the ifthen package syntax:

filter={\value{csvrow}<2}

The complete code is:

\documentclass{article}
\usepackage{csvsimple,filecontents}

\begin{filecontents*}{scientists.csv}
    name,surname,age
    Albert,Einstein,133
    Marie,Curie,145
    Thomas,Edison,165
\end{filecontents*}

\begin{document}
    \csvreader[tabular=|l|l|c|,
    table head=\hline & Name & Age\\\hline,
    late after line=\\\hline,
    filter={\value{csvrow}<2},
    ]%
    {scientists.csv}{name=\name,surname=\surname,age=\age}%
    {\thecsvrow & \surname~\name & \age }%
\end{document}

enter image description here

Alternatively, the before filter could be used to implement an own filter option. Here, \ifnum can be used:

\documentclass{article}
\usepackage{csvsimple,filecontents}

\begin{filecontents*}{scientists.csv}
    name,surname,age
    Albert,Einstein,133
    Marie,Curie,145
    Thomas,Edison,165
\end{filecontents*}

\begin{document}
    \csvreader[tabular=|l|l|c|,
    table head=\hline & Name & Age\\\hline,
    late after line=\\\hline,
    before filter=\ifnum\thecsvrow<2\relax\csvfilteraccept\else\csvfilterreject\fi,
    ]%
    {scientists.csv}{name=\name,surname=\surname,age=\age}%
    {\thecsvrow & \surname~\name & \age }%
\end{document}

Your attempt had not the expected result, because between \ifnum ... \else ... \fi you cannot have column separators &. This could be fixed to have the selection at this place, but you would get empty tabular lines instead of no lines.

Thomas F. Sturm
  • 25,210