survMisc (version 0.5.5)

asWide: Convert an object to "wide" or "long" form.

Description

Convert an object to "wide" or "long" form.

Usage

asWide(x, ...)
# S3 method for ten
asWide(x, ...)
asLong(x, ...)
# S3 method for ten
asLong(x, ...)

Arguments

x

An object of class ten or pred.

...

Additional arguments (not implemented).

Value

A new data.table is returned, with the data in 'wide' or 'long' format. There is one row for each time point. For a ten object generated from a numeric or Surv object, this has columns:

t

time.

e

number of events.

n

number at risk.

If derived from a survfit, coxph or formula object, there are additional columns for e and n for each covariate group.

Examples

# NOT RUN {
data("bmt", package="KMsurv")
require("survival")
t1 <- ten(c1 <- coxph(Surv(t2, d3) ~ z3*z10, data=bmt))
asWide(t1)
# }
# NOT RUN {
asLong(asWide(t1))
stopifnot(asLong(asWide(t1)) == ten(ten(t1)))
# }