ex2pdf: Generation of Exercise Sheets and Exams in PDF Format
In imbs-hl/imbs: Collection of functions used at the IMBS

Description Usage Arguments Details Value Author(s) Examples

Automatic generation of exercise sheets and exams in PDF format, inspired by the exams package.

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ex2pdf(sheets, poolDir, templates, outDir = getwd(), names, n = 1,
  compiler = list(command = "latexmk", args = c("-pdf",
  "-interaction=batchmode")), clean = TRUE, ...)

`sheets`	[`list`] A list with the following mandatory entries: `exercises` [`list`] with file names to look for in `poolDir`. This is done recursively. Don't give the absolute path or relative path, just the file name. You can omit the extension. If a list entry is a `character` vector of file names, they get sampled according to `nsamp`. `nsamp` [`integer`] giving the number of exercises to sample, if the corresponding entry of `exercises` is a `character`. As most as long as `exercises`. Gets recycled if shorter. Additional entries are available during brewing of the `templates` files. If the list entries are named, the names are appended to `names` to generate unique file names.
`poolDir`	[`string`] Path of the directory storing the exercise files.
`templates`	[`character`] Path of template files. Each file must follow the `brew` specifications. Each template will be brewed, knited and compiled into one single PDF.
`outDir`	[`string`] Path of the output directory. Default is the current working directory.
`names`	[`character`] Specifies the naming scheme of each template in the output directory.
`n`	[`integer`] Specifies the number of copies to be generated per template. If `n`>1, the numer of copy is appended to the output file name.
`compiler`	[`list`] Specifies the LaTeX compiler and its arguments. Must have the following entries: `command` [`string`] name of the executable of the LaTeX compiler to be called. `args` [`character`] vector of arguments passed to the LaTeX compiler.
`clean`	[`character` or `flag`] If `TRUE` all files but PDF files in `outDir` are removed after compilation. If a `character` vector, only files with the given extensions are removed after compilation. If `FALSE` no clean up is done.
`...`	Any further arguments passed to the environment of `brew`. This is helpful to pass static elements such as e-mail adresses or semester identifier to all `brew` calls.

Examples of templates are installed in systemfile("templates", package = "imbs)}. Examples of exercises and solutions are installed in \code{systemfile("templates", package = "imbs).

Invisible character with path of generated PDF files.

Damian Gola, gola@imbs.uni-luebeck.de

## Not run: 
if(require(ggplot2)) {
sheets <- list(w1 = list(exercises = list("sum1", "sum2"), 
                         nsamp = c(1, 1),
                         date = "yyyy-mm-dd"),
               w2 = list(exercises = list(c("boxplot1", "regression1")),  
                         nsamp = 1,
                         date = "yyyy-mm-dd"))

ex2pdf(sheets = sheets,
       poolDir = system.file("pool", package = "imbs"),
       templates = c(system.file("templates/exercise.brew", package = "imbs"),
                     system.file("templates/solution.brew", package = "imbs")),
       outDir = file.path(getwd(), "ex2pdfTest"),
       names = c("Exercise", "Solution"),
       n = 2,
       compiler = list(command = "pdflatex",
                       args = c("-interaction=batchmode")),
       year = 2016,
       email = "mail@example.net")
 }

## End(Not run)