[R] Bootstraping problem

Prof Brian D Ripley ripley at stats.ox.ac.uk
Wed Feb 24 08:30:24 CET 1999

On Mon, 22 Feb 1999, [ISO-8859-1] Jesús María Frías Celayeta wrote:

> 	I am trying to use the boot library to estimate confidence intervals
> and i have found some problem. I am using 0.63.2 version in a linux machine
> and i downloaded the latest version of the libraries from the CRAN site.
> Unfortunately i cannot run the documentation example for boot.ci and as it
> looks is some problem with the masking of the objects, but i might be missing
> something. Is this a bug  or am i missing something? 

Well, it is that R has changed a lot since that _package_ was ported from
the boot library, and the package has functions designed to work around
functionality missing in R at the time.

You can (and should) delete sample() from boot/R/zzz.R and re-install.
You can also delete smooth.spline (now in package modreg) and
model.response from that file.  One reason for now reporting the masking is
so that you are altered to problems like this and can fix them yourself.

I will send an update to CRAN when I find time to check the current state
of this: boot is a big package and takes a long time to check out, and
checking ports of other people's code is not high on my priority list.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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