Hi,
It looks like xtable is "sanitizing" special characters in the LaTeX output by
default, by adding a double backslash, so that LaTeX will process the
characters as literals, rather than specials. It is not parsing the boundary
'$' characters to define insertion of math symbols inside text mode.
You have 'sanitize.colnames.function = identity', which is why the column name
is output 'as is'.
You would seem to need to do the same thing for the text content within the
table content:
> print(xtable(mytable), include.rownames = F,
sanitize.colnames.function = identity,
sanitize.text.function = identity)
% latex table generated in R 4.0.3 by xtable 1.8-4 package
% Fri Nov 6 07:54:51 2020
\begin{table}[ht]
\centering
\begin{tabular}{l}
\hline
$\beta_0$ \\
\hline
aa \\
bb \\
cc$\alpha_1$ \\
\hline
\end{tabular}
\end{table}
Regards,
Marc Schwartz
> On Nov 6, 2020, at 7:39 AM, John <miao...@gmail.com> wrote:
>
> I'd like to have $\alpha_1$ in my table, and the column name is $\beta_0$
> ####
> library(xtable)
> mytable <- data.frame(beta_0 = c("aa","bb","cc$\\alpha_1$"))
> colnames(mytable) <- "$\\beta_0$"
> print(xtable(mytable), include.rownames = F, sanitize.colnames.function =
> identity)
> ####
>
> No problem with \beta_0, but a problem with \alpha_1:
>
> \begin{table}[ht]
> \centering
> \begin{tabular}{l}
> \hline
> $\beta_0$ \\
> \hline
> aa \\
> bb \\
> cc\$$\backslash$alpha\_1\$ \\
> \hline
> \end{tabular}
> \end{table}
>
> How may I fix the $\alpha_1$? Thanks!
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