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

Description Usage Arguments Value Note Examples

View source: R/asWide.R

Description

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

Usage

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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.

Note

Most methods for ten objects are designed for the 'long' form.

Examples

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## Not run: 
data("bmt", package="KMsurv")
require("survival")
t1 <- ten(c1 <- coxph(Surv(t2, d3) ~ z3*z10, data=bmt))
asWide(t1)

## End(Not run)
## Not run: 
asLong(asWide(t1))
stopifnot(asLong(asWide(t1)) == ten(ten(t1)))

## End(Not run)

survMisc documentation built on May 29, 2017, 3:50 p.m.