Epi (version 0.6.2)

apc.plot: Plot the estimates from a fitted Age-Period-Cohort model

Description

This function plots the estimates created by apc.fit in a single graph. It just calls apc.frame after computing some sensible values of the parameters, and subsequently plots the estimates using apc.lines.

Usage

apc.plot(obj, r.txt = "Rate", ...)

Arguments

obj

An object of class apc.

r.txt

The text to put on the vertical rate axis.

...

Additional arguments passed on to apc.lines.

Value

• A numerical vector of length two, with names c("cp.offset","RR.fac"). The first is the offset for the cohort period-axis, the second the multiplication factor for the rate-ratio scale. Therefore, if you want to plot at (x,y) in the right panel, use (x-res["cp.offset"],y/res["RR.fac"])=(x-res[1],y/res[2]). This vector should be supplied for the parameter frame.par to apc.lines if more sets of estimates is plotted in the same graph.

See Also

apc.lines,apc.frame,apc.fit

Examples

data( lungDK )
attach( lungDK )
apc1 <- apc.fit( A=Ax, P=Px, D=D, Y=Y/10^5 )
fp <- apc.plot( apc1 )
apc.lines( apc1, frame.par=fp, drift=1.01, col="red" )
for( i in 1:11 )
  apc.lines( apc1, frame.par=fp, drift=1+(i-6)/100, col=rainbow(12)[i] )