Debugging grid Graphics

Authors

Paul Murrell, The University of Auckland
Velvet Ly, The University of Auckland

Date of this Version

12-2012

Document Type

Article

Citation

The R Journal (December 2012) 4(2)

Comments

Copyright 2012, The R Foundation. Open access material. License: CC BY 3.0 Unported

Abstract

A graphical scene that has been produced using the grid graphics package consists of grobs (graphical objects) and viewports. This article describes functions that allow the exploration and inspection of the grobs and viewports in a grid scene, including several functions that are available in a new package called gridDe bug. The ability to explore the grobs and view ports in a grid scene is useful for adding more drawing to a scene that was produced using grid and for understanding and debugging the grid code that produced a scene.