texreg - create empty column

Question

I use texreg to create a LaTeX table from R. I would like to insert an empty column into the output (for stylistic reasons). I can of course do this manually, but it would great to be able to create this automatically. Here is an example:

library(texreg)

x1  <- rnorm(n=100,m=1,s=1)
x2  <- rnorm(n=100,m=1,s=1)
e  <- rnorm(n=100,m=0,s=1)

y <- 0.1 + 0.3 * x1 + 0.4 * x2 + e

reg1 <- lm(y~x1)
reg2 <- lm(y~x2)
reg3 <- lm(y~x1+x2)

texreg(list(reg1,reg2,reg3)
       ,stars=c(0.01,0.05,0.1)
       ,digits=2
       ,dcolumn=T
       ,use.packages=F 
       ,file="tabfile.tex")

This gives me the output:

\begin{table}
\begin{center}
\begin{tabular}{l D{.}{.}{3.5} D{.}{.}{3.5} D{.}{.}{3.5} }
\hline
 & \multicolumn{1}{c}{Model 1} & \multicolumn{1}{c}{Model 2} & \multicolumn{1}{c}{Model 3} \\
\hline
(Intercept) & 0.59^{***} & 0.53^{***} & 0.05       \\
            & (0.16)     & (0.16)     & (0.19)     \\
x1          & 0.36^{***} &            & 0.40^{***} \\
            & (0.11)     &            & (0.10)     \\
x2          &            & 0.43^{***} & 0.48^{***} \\
            &            & (0.11)     & (0.11)     \\
\hline
R$^2$       & 0.10       & 0.13       & 0.25       \\
Adj. R$^2$  & 0.09       & 0.12       & 0.23       \\
Num. obs.   & 100        & 100        & 100        \\
RMSE        & 1.05       & 1.03       & 0.96       \\
\hline
\multicolumn{4}{l}{\scriptsize{$^{***}p<0.01$, $^{**}p<0.05$, $^*p<0.1$}}
\end{tabular}
\caption{Statistical models}
\label{table:coefficients}
\end{center}
\end{table}

What I would like to have instead is:

\begin{table}
\begin{center}
\begin{tabular}{lc D{.}{.}{3.5} D{.}{.}{3.5} D{.}{.}{3.5} }
\hline
 && \multicolumn{1}{c}{Model 1} & \multicolumn{1}{c}{Model 2} & \multicolumn{1}{c}{Model 3} \\
\hline
(Intercept) && 0.59^{***} & 0.53^{***} & 0.05       \\
            && (0.16)     & (0.16)     & (0.19)     \\
x1          && 0.36^{***} &            & 0.40^{***} \\
            && (0.11)     &            & (0.10)     \\
x2          &&            & 0.43^{***} & 0.48^{***} \\
            &&            & (0.11)     & (0.11)     \\
\hline
R$^2$       && 0.10       & 0.13       & 0.25       \\
Adj. R$^2$  && 0.09       & 0.12       & 0.23       \\
Num. obs.   && 100        & 100        & 100        \\
RMSE        && 1.05       & 1.03       & 0.96       \\
\hline
\multicolumn{5}{l}{\scriptsize{$^{***}p<0.01$, $^{**}p<0.05$, $^*p<0.1$}}
\end{tabular}
\caption{Statistical models}
\label{table:coefficients}
\end{center}
\end{table}

It would of course be even better, if there was a way to insert arbitrary empty columns.

``texreg`` was made for ``lm`` objects and will only accept these. As mentioned [in this post](http://stackoverflow.com/questions/21955145/create-a-new-lm-object-using-r), you can simply create your individual lm objects by taking an already existing lm object and manipulate its numbers to characters. maybe `textreg` will accept this. ``emptyLM <- reg1; emptyLM$coefficients[1:2] <- as.character(rep( "",2))`` and so on. Then call ``texreg(list(reg1,reg2,emptyLM,reg3)``. Good luck! — nilsole, Aug 29 '16 at 21:39
the last possibility of course would be to manipulate the ``textreg`` function itself according to your needs. — nilsole, Aug 29 '16 at 22:07
@nilsole: This is wrong. ``texreg`` was made for all sorts of model types. It currently supports more than 70 of them and is customizable. Customizable means you can easily write new extensions via providing methods for the generic ``extract`` function as described in my answer here: http://stackoverflow.com/questions/38894044/print-beautiful-tables-for-h2o-models-in-r. Forcing coefficients into ``lm`` containers or changing the ``texreg`` function is absolutely the wrong way to do it. — Philip Leifeld, Aug 30 '16 at 09:42

score 2 · Accepted Answer · answered Aug 30 '16 at 10:57

You can insert new columns using the custom.columns argument of texreg. The new columns should be handed over as a named list. The custom.col.pos argument can be used to indicate where the columns should be located. For example, you could insert a new, empty column by adding the argument custom.columns = list("new column" = rep("", 3)).

texreg - create empty column

1 Answers1