Plot several Survival Curves

Usage

multiplot_survival(
  t,
  alpha = 0,
  bz0 = 0,
  bz1 = 0,
  span = rep(TRUE, 3),
  theme = ggplot2::theme_bw()
)

t: vector of times for which to calculate the survival curves
alpha: parameter alpha of the survival function
bz0: parameter bz0 of the survival function
bz1: parameter bz1 of the survival function
span: vector of logical of length three indicating for each of the parameters alpha, bz0, bz1 if they are to be varied or to be kept fix
theme: ggplot2-theme applied to the plots