xweave: Wrapper Function for Weaving Either Rnw or Rmd Exercises

In exams: Automatic Generation of Exams in R

Wrapper Function for Weaving Either Rnw or Rmd Exercises

Description

Simple wrapper function that either calls Sweave for Rnw exercises or knit for Rmd exercises.

Usage

  xweave(file, quiet = TRUE, encoding = "UTF-8", engine = NULL, envir = new.env(),
    pdf = TRUE, png = FALSE, svg = FALSE, height = 6, width = 6, resolution = 100,
    highlight = FALSE, ...)

Arguments

file, quiet	arguments passed to Sweave or knit, respectively.
encoding	character, ignored. The encoding is always assumed to be UTF-8.
engine	character indicating whether "Sweave" (default) or "knitr" should be used for rendering Rnw exercises.
envir	argument passed to knit. By default, or if envir = NULL a new.env() is created for each xweave() call.
pdf, png, svg, height, width, resolution, highlight, ...	arguments passed to Sweave or opts_chunk, respectively. In the latter case: pdf/png/svg are mapped to dev; height/width are mapped to fig.height/fig.width; and resolution is mapped to dpi. highlight is ignored for Sweave.

Details

Depending on whether file has an .Rnw or .Rmd suffix, either Sweave or knit is called for weaving the file by default. Rnw exercises can optionally also be weaved by knit by setting engine = "knitr".

If png = TRUE or svg = TRUE when calling Sweave, then the resulting includegraphics statements are supplemented with the .png or .svg suffix of the corresponding graphics. For svg a simple graphics device hook .xweave_svg_grdevice is provided on-the-fly for plug-in into Sweave.

See Also

Sweave, knit

exams documentation built on June 8, 2025, 12:12 p.m.