R help - Feb 2013 - Choosing Grid points for computing Cumulative Incidence Function

I have a competing risk data where two risks: relapse and death can be
considered as responsible for the failure of treatment.

 I want to find the cumulative incidence function for each of the risk, at
10 grid points. How can I choose the grid points from the continuous
 lifetime variable TIME?

What will happen if I choose more than 10 grid points?

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