Comparison of debugging methods

Under construction

Sneak peak:

• An overview of methods for debugging/inspecting ggplot and their pros/cons
  • debug()/debugonce()
  • browser() + load_all()
  • layer_data()
  • trace()
• A review and discussion of what came before {ggtrace} (the shoulders of giants)
  • Hiroaki Yutani’s blog post on {ggplot2} + browser()
  • Pedro J. Aphalo’s {gginnards}
  • Brodie Gaslam’s {ggbg} and ggplot2 internals reference document
  • Dewey Dunnington’s {ggdebug}, which also features a function of the same name ggdebug::ggtrace but which does not use trace(). Maybe things have changed in the last 2-3 years, but trace() and untrace() do work with ggproto methods, as this package shows!