[Tex/LaTex] How to define caption width in longtable

captionslongtablewidth

I have a longtable within a landscape environment. Not sure the landscape is relevant but …

\begin{landscape}
\begin{longtable}{lll}
 \caption{bla bla bla long ...}
 table & table & table
\end{longtable}
\begin{landscape}

I would like to change the width of the caption that is too narrow for my taste.

I tried with the caption package that is supposed to work within the table environment

\captionsetup{width=5cm}

I also tried to put my caption in a parbox

\parbox{5cm}{\caption{Lorem ipsum dolor sit amet...}}

As proposed here https://stackoverflow.com/questions/3322563/make-latex-table-caption-same-width-as-table

But it does not change anything or throws out an error.

Would you have an idea?

Best Answer

The error is most likely due to a wrongly place \captionsetup.

I doubt the usefulness of landscape and longtable but here's an example:

\documentclass{article}

\usepackage{longtable}
\usepackage{lscape}
\usepackage{caption}


\usepackage{blindtext}

\begin{document}

\captionsetup{width=5cm}
\begin{landscape}
\begin{longtable}{lll}
 \caption{\blindtext} 
\endfirsthead
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
 table & table & table \tabularnewline
 table & table & table \tabularnewline 
 table & table & table \tabularnewline
\end{longtable}
\end{landscape}
\end{document}

Related Solutions

[Tex/LaTex] How to obtain width of longtable

Inside the threeparttablex package I use this construction to detect the width from within the table itself

\noalign{\begingroup
\setlength\TPTL@width{0pt}
\renewcommand\LT@entry[2]{\global\advance\TPTL@width by ##2}
\@nameuse{LT@\roman{LT@tables}}
\endgroup}

Then the width is then stored in \TPTL@width globally. It takes a few compilations before it is stable.

[Tex/LaTex] How to control the width of longtable

your tables has more issues.

sum of column width are not equal to \textwidth (15.95 cm),
width of the multi column cells are equal to \textwidth, so it extend lats column that the width of the whole table is equal to \textwidth

in examples below are in determination of columns width considered \tabcolsep and \arrayrulewidth.

\documentclass{article}
\usepackage[hmargin=2.525cm]{geometry}%
%\textwidth 15.95cm

\usepackage{array, longtable}
\newcolumntype{C}[1]{>{\centering\arraybackslash}  p{#1}}
\newcolumntype{R}[1]{>{\raggedright\arraybackslash}p{#1}}

%-------------------------------------- only for show page layout
\usepackage{showframe}
\renewcommand\ShowFrameLinethickness{0.25pt}
\renewcommand*\ShowFrameColor{\color{red}}
%---------------------------------------------------------------%
\begin{document}
%\begin{center}
width of table determined by sum of column width

\begin{longtable}{
|p{\dimexpr0.25cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr4.6cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2 cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.2cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr0.8cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.1cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr1.9cm-2\tabcolsep-1.13\arrayrulewidth}|
}
%\multicolumn{7}{|C{\dimexpr\linewidth-2\tabcolsep-2\arrayrulewidth}|}{1}
\hline
a & a & a & a & a & a & a   \\
\hline
\end{longtable}
%\end{center}

width of table determined by multi column cell width

\begin{longtable}{
|p{\dimexpr0.25cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr4.6cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2 cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.2cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr0.8cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.1cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr1.9cm-2\tabcolsep-1.13\arrayrulewidth}|
}
\multicolumn{7}{|C{\dimexpr\linewidth-2\tabcolsep-2\arrayrulewidth}|}{1}    \\
\hline
a & a & a & a & a & a & a   \\
\hline
\end{longtable}


width of the multi column cell is adopted to sum of ll columns widths

\begin{longtable}{
|p{\dimexpr0.25cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr4.6cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2 cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.2cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr0.8cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr2.1cm-2\tabcolsep-1.13\arrayrulewidth}
|p{\dimexpr1.9cm-2\tabcolsep-1.13\arrayrulewidth}|
}
\multicolumn{7}{|c|}{1}    \\
\hline
a & a & a & a & a & a & a   \\
\hline
\end{longtable}

second table:

%\begin{center}
\begin{longtable}{
| C{\dimexpr1.3cm-2\tabcolsep-1.25\arrayrulewidth}% 13cm
| R{\dimexpr9.0cm-2\tabcolsep-1.25\arrayrulewidth}
| R{\dimexpr2.42cm-2\tabcolsep-1.25\arrayrulewidth}
| R{\dimexpr2.42cm-2\tabcolsep-1.25\arrayrulewidth} |
}
%\multicolumn{4}{|C{\dimexpr\linewidth-2\tabcolsep-2\arrayrulewidth}|}{2}
\hline
a & a & a & a   \\
\hline
\end{longtable}
%\end{center}

\begin{longtable}{
| C{\dimexpr1.3cm-2\tabcolsep-1.25\arrayrulewidth}% 13cm
| R{\dimexpr9.0cm-2\tabcolsep-1.25\arrayrulewidth}
| R{\dimexpr2.42cm-2\tabcolsep-1.25\arrayrulewidth}
| R{\dimexpr2.42cm-2\tabcolsep-1.25\arrayrulewidth} |
}
\multicolumn{4}{|C{\dimexpr\linewidth-2\tabcolsep-2\arrayrulewidth}|}{2}    \\
\hline
a & a & a & a   \\
\hline
\end{longtable}

\end{document}

(red lines indicates border of text area).

the first and second table without of multi column cells have different widths. the purpose of the first table row is not clear. see if the third version of the first table gives what you like to achieve.

Best Answer

Related Solutions

[Tex/LaTex] How to obtain width of longtable

[Tex/LaTex] How to control the width of longtable

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