This function is invoked and controlled by plot.prodlim.
confInt(ci, citype, col, lty, lwd, density = 55, ...)Nil
A data.table with columns time, lower and upper.
If "shadow" then confidence limits are drawn as colored
shadows. Otherwise, dotted lines are used to show the upper and lower
confidence limits.
the colour of the lines.
the line type of the lines.
the line thickness of the lines.
For citype="shadow", the density of the shade. Default
is 55 percent.
Further arguments that are passed to the function
segments if type=="bars" and to lines else.
Thomas Alexander Gerds <tag@biostat.ku.dk>
This function should not be called directly. The arguments can be specified
as Confint.arg in the call to plot.prodlim.
plot.prodlim, atRisk,
markTime