Changes to grid for R 3.0.0
Paul R. Murrell · The R Journal · 2013
From R 3.0.0,there is a new recommended way to develop new grob classes in grid.In a nutshell, two new "hook" functions, makeContext() and makeContent() have been added to grid to provide an alternative to the existing hook functions preDrawDetails(), drawDetails(), and postDrawDetails().There is also a new function called grid.force().This article discusses why these changes have been made, provides a simple demonstration of the use of the new functions, and discusses some of the implications for packages that build on grid.