When an APC-frame has been produced by apc.frame, this
function draws curves in the period/cohort part of the frame.
pc.points( x, y, ... )
pc.lines( x, y, ... )
pc.matpoints( x, y, ... )
pc.matlines( x, y, ... )
cp.points( x, y, ... )
cp.lines( x, y, ... )
cp.matpoints( x, y, ... )
cp.matlines( x, y, ... )vector of x-coordinates.
vector of y-coordinates.
Further parameters to be transmitted to points, lines, matpoints or matlines used for plotting the three sets of curves.
The functions return nothing.
Since the Age-part of the frame is referred to by its real
coordinates plotting in the calendar time part requires translation
and scaling to put things correctly there, that is done by the
functions pc.points etc.
The functions cp.points etc. are just synonyms for these, in
recognition of the fact that you can never remember whether it is "pc"
pr "cp".