[Tex/LaTex] Reference table row in LaTeX

cross-referencingnumberingtables

I would like to number and label each row in my table so I can reference them later on.

But I get the flowing output:

I would like the output to look like this:

How can I fix this problem?

Code:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[danish]{babel}
\usepackage{lscape}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{color}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{float}
\usepackage[top=2.81cm, bottom=2.75cm,right=2cm, left=2cm]{geometry}
\usepackage{url}
\usepackage[hidelinks]{hyperref}
\hypersetup{breaklinks=true}
\usepackage{setspace}
   \onehalfspacing
   \usepackage[T1]{fontenc}


\begin{document}

\begin{table}[H]
\centering
\label{tab:Q1}
\begin{tabular}{|c|c|l|l|}
\hline
Number & Theory & Question & Explanation  \\ \hline
1 \label{que:whyisit} & B & Why is it you think ... & This is a good question\\
2 \label{que:doyouthink} & A & Do you think  ... & This Is also a good question\\
3 \label{que:isitcorrect} & B & is it correct that you think ... & This is question \\ \hline
\end{tabular}
\caption{Table with questions}
\end{table}
Question \ref{que:whyisit} is about ... \\
Question \ref{que:doyouthink} is about ... \\
Question \ref{que:isitcorrect} is about ...

\end{document}

Best Answer

Here is a method with a new columntype N which automatically increases the rowcntr, since a \label should use a counter in the background (although writing manipulating \@currentlabel is also possible, see gernot's answer).

The rowcntr is reset with every new tabular command or if a new table \caption has been used (i.e. the table counter has been increased then)

In my point of view, the row number should be prefixed with the table number, in order to confusion which question is meant in case of more than one table questions should occur.

Hyperlinks do work!

I also shifted the wrongly placed table label to the place where it belongs, i.e. after using\caption!

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[danish]{babel}
\usepackage{lscape}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{float} 
\usepackage{array}
\usepackage[top=2.81cm, bottom=2.75cm,right=2cm, left=2cm]{geometry}

\usepackage{etoolbox}
\usepackage{setspace}
\onehalfspacing

\usepackage{url}
\usepackage[hidelinks]{hyperref}

\hypersetup{breaklinks=true}

\newcounter{rowcntr}[table]
\renewcommand{\therowcntr}{\thetable.\arabic{rowcntr}}

% A new columntype to apply automatic stepping
\newcolumntype{N}{>{\refstepcounter{rowcntr}\therowcntr}c}

% Reset the rowcntr counter at each new tabular
\AtBeginEnvironment{tabular}{\setcounter{rowcntr}{0}}



\begin{document}

\begin{table}[H]
\centering
\caption{Table with questions} \label{tab:Q1}
\begin{tabular}{|N|c|l|l|}
\hline
\multicolumn{1}{|c}{Number} & Theory & Question & Explanation  \\ \hline
\label{que:whyisit} & B & Why is it you think ... & This is a good question\\
\label{que:doyouthink} & A & Do you think  ... & This Is also a good question\\
\label{que:isitcorrect} & B & is it correct that you think ... & This is question \\ \hline
\end{tabular}
\end{table}

Question \ref{que:whyisit} is about ... \\
Question \ref{que:doyouthink} is about ... \\
Question \ref{que:isitcorrect} is about ... 

\clearpage

\begin{table}[H]
\centering
\caption{Table with questions} \label{tab:Q2}
\begin{tabular}{|N|c|l|l|}
\hline
\multicolumn{1}{|c}{Number} & Theory & Question & Explanation  \\ \hline
\label{que:whyisitother} & B & Why is it you think ... & This is a good question\\
\label{que:doyouthinkother} & A & Do you think  ... & This Is also a good question\\
\label{que:isitcorrectother} & B & is it correct that you think ... & This is question \\ \hline
\end{tabular}

\end{table}

Question \ref{que:whyisitother} is about ... \\
Question \ref{que:doyouthinkother} is about ... \\
Question \ref{que:isitcorrectother} is about ... 



\end{document}

Related Solutions

[Tex/LaTex] Automatic table row numbers

\documentclass{article}
\usepackage{array,etoolbox}
\preto\tabular{\setcounter{magicrownumbers}{0}}
\newcounter{magicrownumbers}
\newcommand\rownumber{\stepcounter{magicrownumbers}\arabic{magicrownumbers}}
\begin{document}

\begin{tabular}{@{\makebox[3em][r]{\rownumber\space}} | r}
  Something \\
  Other stuff \\
  MAGIC!
\end{tabular}

\end{document}

output

If you want to start with the second row use

\documentclass{article}
\usepackage{array,etoolbox}
\preto\tabular{\setcounter{magicrownumbers}{0}}
\newcounter{magicrownumbers}
\def\rownumber{}
\begin{document}

\begin{tabular}{@{\makebox[3em][r]{\rownumber\space}} | r}
  Something 
  \gdef\rownumber{\stepcounter{magicrownumbers}\arabic{magicrownumbers}} \\
  Other stuff \\
  MAGIC!
\end{tabular}

\end{document}

output

If one wants a heading for the columns use:

\documentclass{article}
\usepackage{array,etoolbox}
\preto\tabular{\setcounter{magicrownumbers}{0}}
\newcounter{magicrownumbers}
\newcommand\rownumber{\stepcounter{magicrownumbers}\arabic{magicrownumbers}}
\begin{document}

\begin{tabular}{@{\makebox[3em][r]{\rownumber\space}} | r}
\multicolumn{1}{@{\makebox[3em][r]{ID~}} | r}{\emph{whatever}}\\    
        Something \\
        Other stuff \\
        MAGIC!
\end{tabular}

\end{document}

[Tex/LaTex] Reference table rows by automatic counter

In order for you to reference the counter like that you need to use \refstepcounter. This steps the counter, as well as telling LaTeX to use the supplied counter for the following reference.

Then you need to replace the \label's. They need to address directly to the counter. Therefore your example would be:

\documentclass{article}
\usepackage{array} %don't know why this is needed; get csname error otherwise

% automatically number examples throughout document
\newcounter{exno}
\newenvironment{examples}
{
\begin{flushleft}
\begin{tabular}{>{(\refstepcounter{exno}\theexno)}rl}
}
{
\end{tabular}
\end{flushleft}
}

\begin{document}

\section{Foo}
Here are some numbered example sentences.
\begin{examples}
  \label{row1} &Content of row 1 \\
  \label{row2} &Content of row 2
\end{examples}
Now I want to get a 1 here: \ref{row1}. I want to get a 2 here: \ref{row2}.

\end{document}

This will produce: example

Added: This also works by linking to the row by loading hyperref package.

Best Answer

Related Solutions

[Tex/LaTex] Automatic table row numbers

[Tex/LaTex] Reference table rows by automatic counter

Related Question