GNU R extensions for 'ggplot2': custom geom, custom themes, plot

 Alignment, Labelled Panels, Symmetric Scales, and Fixed Panel Size
 Miscellaneous functions to help customise 'ggplot2' objects. High-level
 functions are provided to post-process 'ggplot2' layouts and
 allow alignment between plot panels, as well as setting panel
 sizes to fixed values. Other functions include a custom 'geom',
 and helper functions to enforce symmetric scales or add tags to
 facetted plots.