cStep1 {forsearch} | R Documentation |
Derives the first set of observation numbers for forsearch in Cox Proportional Hazards models
cStep1(df1, df1.ls, inner.rank, initial.sample, f.e, cphties, ycol, b.d)
df1 |
Data frame being analyzed by forward search. |
df1.ls |
List, each element of which is a factor subset of df1 |
inner.rank |
Rank of X matrix of lm analysis on entire database |
initial.sample |
Number of random samples from which to take set of initial observations |
f.e |
Right-hand side of formula for Surv function |
cphties |
Character value of method of handling ties |
ycol |
Response column number |
b.d |
Index of point to begin diagnostic listings |
Support function, usually not called independently
Produces set of observation numbers for Step 1. Accounts for presence of factors in the dataset
William R. Fairweather