The Yale Exploratory Data Analysis Toolkit
John W. Emerson, Walton A. Green
YaleToolkit is available on CRAN, along with gpairs and barcode.
There are certainly bugs and many improvements to be
made, although the functions barcode(), gpairs(), whatis(), and tellmemore()
should work fairly well. Sparkline() and sparklines() should work well, if
you find them useful on their own; sparkmat(), however, needs work.