Convert a graph to a pdf ready for embossing

The first argument to this function must be a call to create a graph, such as a histogram. Instead of opening a new graphics device, the graph will be created in a pdf file, with all text being presented using a braille font. The function is somewhat experimental as the best braille font is not yet confirmed, and a number of examples need to be tested on a variety of embossers before full confidence in the function is given.

Usage

BRLThis(x, file)

Arguments

x: the call to create a graph
file: A character string giving the filename where the image is to be saved.

Value

Nothing within the R session, but a pdf file will be created in the user's working directory.

Details

The user's chosen braille font must be installed. This might include the default font shipped as part of the package.

Author

A. Jonathan R. Godfrey. with contributions from JooYoung Seo and TK Lee.