Actually the '\\textbf' specification would work just fine. If you
examine test[,1] you'll see it contains the correct thing. The
problem is when print.xtable is called. This is because it
automatically contains a function that "sanitizes" the character
entries to "fix" characters that have a special meaning in latex.
Hence \\textbf becomes $\backslash$textbf. The following should work:
test= matrix(1:4, nrow=2,ncol=2)
test = xtable(test)
test[,1] = ifelse(test[,1]>1,paste('\\textbf{',test[,1],'}'),test[,1])
print(test, sanitize.text.function=I)
The last command sets the sanitize function to do effectively do
nothing and simply return the string. Hope this helps.
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College
On Sep 23, 2008, at 8:13 PM, Ryan D. Enos wrote:
Dear R help:
I am trying to use paste(), within an ifelse() statement to insert
latex commands into an object that has been created using xtable
(). I cannot make the strings behave as I would like, the '\t' is
creating a tab, the usual method of '\\t' is not working either -
nor is any series of backslashes. The xtable object, I think,
automatically alters the strings. How can I insert the literal
'\textbf' into my xtable object? Any help would be appreciated.
Code examples below.
Ryan
example 1:
> test= matrix(1:4, nrow=2,ncol=2)
> test = xtable(test)
> test[,1] = ifelse(test[,1]>1,paste('\textbf{',test[,1],'}'),test[,
1])
> test
% latex table generated in R 2.5.1 by xtable 1.5-1 package
% Tue Sep 23 17:08:18 2008
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrr}
\hline
& 1 & 2 \\
\hline
1 & 1 & 3 \\
2 & extbf\{ 2 \} & 4 \\
\hline
\end{tabular}
\end{center}
\end{table}
example 2:
> test= matrix(1:4, nrow=2,ncol=2)
> test = xtable(test)
> test[,1] = ifelse(test[,1]>1,paste('\\textbf{',test[,1],'}'),test
[,1])
> test
% latex table generated in R 2.5.1 by xtable 1.5-1 package
% Tue Sep 23 17:11:56 2008
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrr}
\hline
& 1 & 2 \\
\hline
1 & 1 & 3 \\
2 & $\backslash$textbf\{ 2 \} & 4 \\
\hline
\end{tabular}
\end{center}
\end{table}
--
Ryan D. Enos
Department of Political Science
UCLA
http://renos.bol.ucla.edu/
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and provide commented, minimal, self-contained, reproducible code.
