Convert sjPlot::tab_model() html tables to tex and pdf with html2pdf() and use them in Rmarkdown documents with tex2Rmd().

Installation

html2latex is currently only available on Github.

# remotes::install_github("gorkang/html2latex")
library("html2latex")

Requirements

Fully tested on Linux. Partially tested on Mac and Windows.

1. You need a working Libreoffice installation to convert html to odt
2. We include Writer2latex
   in this package for the odt to tex step
3. You will need a working Java installation
4. You will also need a TeX compiler if you want to use the integrated pdf compilation (you can try installing tinytex and tinytex::install_tinytex())

html2pdf() function uses a Writer2latex script which is sourced from the extdata folder.

Issues

If something does not work, make sure to have all the requirements above. You can use silent = FALSE in html2pdf() to see in which step things are failing. If nothing works, do send an issue including a reproducible example.

There should be no spaces in the path to your table, or in the table file name.

Example

Create a sjPlot::tab_model() and save it as html.

  library(html2latex)
  library(lme4)
  library(sjPlot)
  
  # This is a terrible model
  model = lmer(mpg ~ cyl * disp + (1|vs), mtcars)
  
  # We save the sjPlot table to an .html file
  
  sjPlot::tab_model(
    model,
    show.r2 = TRUE,
    show.icc = FALSE,
    show.re.var = FALSE,
    p.style = "scientific",
    emph.p = TRUE,
    file = "temp.html")

Using the html2pdf() we can transform the html output of sjPlot::tab_model() to .tex. We can also compile to pdf in one step with the parameter build_pdf = TRUE.

# Create tex and pdf

html2pdf(filename = "temp.html", 
  table_width = 13, 
   silent = FALSE, 
   style = TRUE, 
   build_pdf = TRUE, 
   clean = TRUE,
   name_table = "table1")

#> pdf file created in: /.../html2latex/temp.pdf
#> tex file created in: /.../html2latex/temp.tex

tex2Rmd

You can include sjPlot::tab_model() html tables in a Rmarkdown document that outputs as pdf in three steps:

1. YAML header

The YAML heather of the .Rmd document must include this:

header-includes:
- \usepackage{array}
- \usepackage{longtable}
- \newcommand\textstyleStrongEmphasis[1]{\textbf{#1}}
- \makeatletter
- \newcommand\arraybslash{\let\\\@arraycr}

---

2. Extract the table bit from the tex file

The tex2Rmd() function creates a .txt file getting rid of the parts of the .tex code that cause conflicts when rendering the Rmd document.

# Create table.txt to be able to use it in Rmd documents
tex2Rmd("temp.tex")

#> File with table code created in: table.txt

The tex file created with html2pdf can be rendered as a pdf by opening the tex file in RStudio and using the Compile PDF button. But if you want to use the table specific code inside a Rmd file (from \begin{longtable} to \end{longtable}), we need to extract it first. This is automatically done by the ´tex2Rmd()´ function.

3. Use this code in the Rmd document.

Finally, you need to insert the latex code below outside of a chunk in your Rmd file.

\newcommand{\myinput}[1]{%
  \begingroup%
  \renewcommand\normalsize{\small}% Specify your font modification
  \input{#1}%
  \endgroup%
}
\begin{centering}
\myinput{table.txt}
\end{centering}

---

To see the result, please check the example.pdf in the github repository (will not be installed alongside the package)

(You might need to then call pdflatex in a terminal separately, if compiling via RStudio fails)

Manually input latex code

Alternatively, you can manually insert the contents of table.txt in a chunk staring with ```{=latex}

See: https://bookdown.org/yihui/rmarkdown-cookbook/raw-latex.html