Stores one or more survival stepfunctions of the Kaplan-Meier and Breslow type.
time:Object of class "vector". The time points at which the function starts, jumps or ends.
curves:Object of class "matrix". The values of the curve at each time point. Note that the function is left-continuous. Curves are stored as a matrix of dimension (\# curves) x (\# timepoints).
(breslow): Coerces the object to a matrix (as as.matrix) and selects rows and/or columns.
(breslow): Selects a subset of the curves.
(breslow): Returns the "curves" slot together with the "time" slot in a data.frame.
(breslow): Coerces the object to a list.
(breslow): Returns the "curves" slot with the "time" slot as column names.
(breslow): Straightforward plotting (all curves in one plot).
(breslow): Summarizes the dimensions of the object.
(breslow): Takes a second argument (time). Extracts the value of the survival curve(s) at any time point.
Breslow objects are generally created by the penalized function and related functions.