# [R] xtable: custom row.names, move caption to top

Rainer Schuermann Rainer.Schuermann at gmx.net
Wed Nov 27 17:43:30 CET 2013

You get the cation to the top of the table with
print( saxtab, caption.placement = "top" )

Formatting the table the way you want can be done like this - I did not manage to carry the LaTeX math formatting for the row names over ($k$ and $n_k$)but the rest should be very much what you want:

saxtab <- t( as.data.frame( addmargins( Saxony ) ) )
rownames( saxtab ) <- c( "Males (k)", "Families (n_k)" )
saxtab <- xtable( saxtab, digits = 0,
caption = "Number of male children in 6115 Saxony families of size 12",
align = "l|rrrrrrrrrrrrrr" )
print( saxtab, caption.placement = "top", include.colnames = FALSE,
hline.after = c( NULL, 0, nrow( saxtab ) ) )

% latex table generated in R 3.0.2 by xtable 1.7-1 package
% Wed Nov 27 17:41:17 2013
\begin{table}[ht]
\centering
\caption{Number of male children in 6115 Saxony families of size 12}
\begin{tabular}{l|rrrrrrrrrrrrrr}
\hline
Males (k) & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & Sum \\
Families (n\_k) &    3 &   24 &  104 &  286 &  670 & 1033 & 1343 & 1112 &  829 &  478 &  181 &   45 &    7 & 6115 \\
\hline
\end{tabular}
\end{table}

On Wednesday 27 November 2013 09:24:22 Michael Friendly wrote:
> With xtable, I'm producing one-way tables from table objects in
> horizontal form as shown below.
> I'd like to change the labels used for the rows and move the caption to
> the top of the table,
> as is typically standard for tables.  I can hand-edit, but would prefer
> to do it in code.
>
> data(Saxony, package="vcd")
> library(xtable)
>      caption="Number of male children in 6115 Saxony families of size 12")
>
> print(saxtab)
>  > print(saxtab)
> % latex table generated in R 3.0.1 by xtable 1.7-1 package
> % Wed Nov 27 09:12:16 2013
> \begin{table}[ht]
> \centering
> \begin{tabular}{rrrrrrrrrrrrrrr}
>    \hline
>   & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & Sum \\
>    \hline
> 1 & 3 & 24 & 104 & 286 & 670 & 1033 & 1343 & 1112 & 829 & 478 & 181 & 45
> & 7 & 6115 \\
>     \hline
> \end{tabular}
> \caption{Number of male children in 6115 Saxony families of size 12}
> \end{table}
>  >
>
> The desired form looks like this, with row.names = c("Males ($k$)",
> "Families ($n_k$)")
>
> % latex table generated in R 3.0.1 by xtable 1.7-1 package
> % Tue Nov 26 14:56:02 2013
> \begin{table}[ht]
> \caption{Number of male children in 6115 Saxony families of size 12}
> \label{tab:saxtab}
> \centering
> \begin{tabular}{l|rrrrrrrrrrrrrr}
>    \hline
> Males ($k$) & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & Sum \\
>    \hline
> Families ($n_k$) & 3 & 24 & 104 & 286 & 670 & 1033 & 1343 & 1112 & 829 &
> 478 & 181 & 45 & 7 & 6115 \\
>     \hline
> \end{tabular}
> \end{table}
>
>