[R] unequalspaced time-series data

Thomas Lumley thomas at biostat.washington.edu
Wed Jun 21 17:30:51 CEST 2000

On Wed, 21 Jun 2000, Jim Lindsey wrote:
> > 
> > Dear R-users,
> > 
> > is there any object-type or routine/function in R which can handle
> > unequally spaced time-series data? I know that there is the library
> > OSWALD for S-Plus, which is able to do so, but I was not successful in
> > running it under R. Does anyone can help?
> My growth and repeated libraries will probably do what you want:
> www.luc.ac.be/~jlindsey/rcode.html
> Patrick and I tried to port Oswald to R about 4 years ago (and it still
> runs on R 1.0.1), but Oswald is full of bugs.

I also tried to port OSWALD (or at least the pcmid() informative dropout
function) earlier this year.  I didn't find as many bugs as Jim reports,
but there was a lot of complicated code designed to make S look more
object-oriented than it really is, much of which needed complete rewriting
to work in R.  I had hoped that porting pcmid() would be quicker than
starting from scratch, but this probably wasn't the case.


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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