How to solve \headrow error?

Question

\headrow is not working and give error on Overleaf:

The compiler is having trouble understanding a command you have used. Check that the command is spelled correctly. If the command is part of a package, make sure you have included the package in your preamble using \usepackage{...}.

even I use \usepackage{threeparttable}

How to solve that?

\begin{table}[bt]
\centering
\caption{Toy Students Dataset}
  \label{owakey}
\begin{threeparttable}
\begin{tabular}{lccc}
\headrow
t & FirstName & LastName & HasFriend \\
student\_1&&&\\
    student\_2&&&---\\
    student\_3& &&\\ 
\hiderowcolors

\hline  % Please only put a hline at the end of the table
\end{tabular}
\end{threeparttable}
\end{table}

with \documentclass[12pt]{memoireuqam1.3ang}

\headrow is not a command of threeparttable, could you please add a minimal example which reproduces your error? — CarLaTeX, Sep 07 '19 at 04:24
I can't find any package which defines \headrow, why don't you simply use \hline? Or \toprule from booktabs package? — CarLaTeX, Sep 07 '19 at 04:48
See if this post could help you: https://tex.stackexchange.com/questions/5363/how-to-create-alternating-rows-in-a-table — CarLaTeX, Sep 07 '19 at 05:05
Could you please add where you got memoireuqam1.3ang.cls from? — leandriis, Sep 07 '19 at 08:27
you presumably saw some documentation that suggested a command called \headrow that document must have told you how to define it (it is not a standard command) — David Carlisle, Sep 07 '19 at 08:33
@leandriis There is the template on Overleaf. However, the command is not defined in the class. — CarLaTeX, Sep 07 '19 at 08:42

score 3 · Accepted Answer · answered Sep 07 '19 at 16:25

The command \headrow is defined in a custom class developed by Overleaf called wiley-article.cls (see Copy/paste code from Overleaf to LaTeX?). The definition there is \newcommand{\headrow}{\rowcolor{black!20}}, which fits your description of an 'alternative row color'. The \rowcolor command itself is provided by the colortbl package, which can be loaded using \usepackage[table]{xcolor}. Loading xcolor also allows to use color specifications like black!20 (20% black).

MWE:

\documentclass{memoir}
\usepackage{threeparttable}
\usepackage[table]{xcolor}
\newcommand{\headrow}{\rowcolor{black!20}}
\begin{document}
\begin{table}[bt]
\centering
\caption{Toy Students Dataset}
  \label{owakey}
\begin{threeparttable}
\begin{tabular}{lccc}
\headrow
t & FirstName & LastName & HasFriend \\
student\_1&&&\\
    student\_2&&&---\\
    student\_3& &&\\ 
\hiderowcolors

\hline  % Please only put a hline at the end of the table
\end{tabular}
\end{threeparttable}
\end{table}
\end{document}

Result:

How to solve \headrow error?

1 Answers1