Calculates correlation of variables and displays the results
graphically. Included panel functions can display points, shading, ellipses, and
correlation values with confidence intervals. See Friendly (2002)
Version 1.8 (Jul 2015)
Version 1.7 (Feb 2015)
Version 1.6 (Aug 2014)
Move packages from Depends to Imports.
Argument label.pos now defaults to c(.5, .5) for x,y positioning. (Request of Evan Williams).
New argument 'cor.method'. (Request of Evan Williams).
Version 1.5 (Aug 2013)
Update references links. (Request of Michael Friendly).
Small bug with test for correlation matrix (Reported by F. Rosa)
Version 1.4 (Nov 2012)
Panel colors are now specified via a 'col.regions' argument. The old method of using 'col.corrgram' is ignored. Could cause slight incompatability.
Re-worked examples section for more variety.
Version 1.3 (Aug 2012)
Added 'panel.bar'. (Request of dadrivr)
Added example for unclipped labels (in the test suite).
Small bug. Now accepts NA values in correlation matrices, and NAs caused by missing combinations of data and cor( use="pair").
Non-numeric columns in the data will be ignored. (Request of JZ)
New panel function panel.density
Test suite now includes corrgram of inverse correlation, partial correlation matrices.
Version 0.1 (Nov 2006)
Version 0.0 (Apr 2006)