Building usepackage TeX commands

library(texPreview)

texPreview comes with LaTeX packages built in for each render, but the user can add any TeX library that they have installed on the machine using build_usepackage. This object can then be used in the usrPackages parameter in tex_preview.

Usage

usepackage

build_usepackage(pkg = 'xcolor')

## [1] "\\usepackage{xcolor}"

usepackage with options

build_usepackage(pkg = 'xcolor',options = 'usenames')

## [1] "\\usepackage[usenames]{xcolor}"

vectorized usepackage

geom.opts=c('paperwidth=35cm','paperheight=35cm','left=2.5cm','top=2.5cm')
use.opts="\\usetikzlibrary{mindmap,backgrounds}"

m <- mapply(
  FUN        = build_usepackage,
  pkg        = list('times','geometry','tikz'),
  options    = list(NULL   ,geom.opts ,NULL),
  uselibrary = list(NULL   ,NULL      ,use.opts)
)

unlist(m)

## [1] "\\usepackage{times}"                                                          
## [2] "\\usepackage[paperwidth=35cm,paperheight=35cm,left=2.5cm,top=2.5cm]{geometry}"
## [3] "\\usepackage{tikz}"                                                           
## [4] "\\usetikzlibrary{mindmap,backgrounds}"

- Usage