makePdf: Write to a pdf, but allow printing to the default device...
In Cmell/CMUtils: Utility Functions I Often Use

Write to a pdf, but allow printing to the default device first.

1	makePdf(file, plotFn, printToDefaultDev = T, ...)

`file`	The filename to be passed to pdf()
`plotFn`	A function that wraps the plot statement. Should not take any arguments.
`printToDefaultDev`	If TRUE (default), the plot function will first be called without opening the pdf graphics device. Thus, it will print to the screen, or in your markdown output, etc.