update.packages() - R-help | R Mailing Lists

Thomas Lumley · 2001-07-31T22:43:52Z

On Wed, 1 Aug 2001, Andrew C. Ward wrote: > > Dear R users, > > I am using R Version 1.3.0 (2001-06-22) under Windows 2000 Professional (SP 2). > > When I try "Packages"->"Update packages from CRAN" > the result is something like > trying URL `http://cran.r-project.org/bin/windows/contrib/PACKAGES' > unable to connect to 'cran.r-project.org'. > Error in download.file(url = paste(contriburl, "PACKAGES", sep = "/"), : > cannot open URL `http://cran.r-project.org/bin/windows/cont

update.packages()

Thomas Lumley

Tue, Jul 31, 2001 3:43 PM #

On Wed, 1 Aug 2001, Andrew C. Ward wrote:

The tolerance for timeouts may well be different -- I have been able to
(very slowly) load files in a browser that I can't load with
read.table(url()).

You would probably be better off using the Oz mirror of CRAN. Set
   options(CRAN="http://cran.au.r-project.org")


	-thomas

Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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Thomas J Vogels

Tue, Jul 31, 2001 6:42 PM #

Hello,

I'm slightly confused by the options "error" and "show.error.messages" and
how they are currently handled.  The following refers to R 1.3.0 (AIX:
2001-07-27 and Windows: 2001-06-22).

What I thought I could do to catch error messages and take over control over
their output is (along what I found on the try help page):

option

[1] "Error in log(x) : Non-numeric argument to mathematical function\n"

(Where I use log("a") and unclass(msg) to have some simple examples.)

Alas, afterwards all error messages continue to be suppressed, i.e. are not
shown.  This is simply because getOption("show.error.messages") is NULL
right at the start of my R session!

And this is where my confusion lies:

- Since error messages are always shown until I turn them off explicitly, I
would have expected getOption("show.error.messages") (and thus sem in the
code snippet above) to be TRUE after startup.

- On AIX/R patched I get the following options list:

[1] "error"
So there is no option "show.error.messages" set at all (and hence the NULL).

- On Windows/R release, I get the following options list:

[1] "error.messages"
What option is this?  It's neither "error" nor "show.error.messages" which
are the documented options.

Where did I go wrong?

Thanks,
  -tom

--
Email: vogels at cmu.edu


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