as.lgtdl: Longitudinal Class
In lgtdl: A Set of Methods for Longitudinal Data Objects

Description Usage Arguments Value Author(s) See Also Examples

View source: R/lgtdl.R

as.lgtdl coerces its argument to class lgtdl if possible. is.lgtdl returns TRUE if its argument is of class lgtdl and FALSE otherwise.

1 2	as.lgtdl(x, row.names=NULL) is.lgtdl(x)

`x`	An object which is coerced to a `lgtdl` object for `as.lgtdl` or tested with `is.lgtdl`.
`row.names`	An optional set of row names to be used for the names of the covariates in the resulting `lgtdl` object.

`is.lgtdl`	Returns `TRUE` if its argument is of class `lgtdl`.
`as.lgtdl`	Returns an object of class `lgtdl`.

Robert Gentleman

plot.lgtdl, lgtdl

  x1<-data.frame(time=c(1,3,5), cov=c(4,6,8))
  x2<-data.frame(time=c(11,13,15), interest=c(66,45,88))

  x1<-as.lgtdl(x1)
  x2<-as.lgtdl(x2)

  is.lgtdl(TRUE)