This is a modest upgrade to the initial release, adding a number of features.
ggbiplot() andggscreeplot()`reflect() now also reflects supplementary variables
from FactoMineR::PCA()ade4::dudi.pca()ggbiplot() gains an axis.title
argumentggscreeplot() gains color,
shape, linetype and linewidth
argumentsget_SVD() intended the simplify the interface to
various PCA functions.get_SVD() in ggbiplot() and
ggscreeplot()ggscreeplot()data(crime) used in README giving a more complete
example.geom_polygon() rather than geom_path()
for ellipses to allow them to be filled.var.factor argument to expand or reflect the
variable vectorsstat_ellipse()geom_polygon()) or
unfilled (geom_path())varname.color to replace fixed
muted("red")point.size argument