survMisc (version 0.5.0)

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

Description

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

Usage

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

data("bmt", package="KMsurv")
require("survival")
t1 <- ten(c1 <- coxph(Surv(t2, d3) ~ z3*z10, data=bmt))
asWide(t1)
asLong(asWide(t1))
stopifnot(asLong(asWide(t1)) == ten(ten(t1)))