[R] R hang-up using lm
renaud.lancelot at pasteur.mg
Wed Apr 28 10:46:51 CEST 2004
Martin Maechler a écrit :
>>>>>>"kjetil" == kjetil <kjetil at acelerate.com>
>>>>>> on Tue, 27 Apr 2004 19:19:59 -0400 writes:
> kjetil> On 27 Apr 2004 at 16:46, Raubertas, Richard wrote:
> >> Within the last few weeks, someone else reported a similar
> >> problem when using the results of tapply in a call to rlm().
> >> Note that the result of tapply is a 1D array, and it appears
> >> there is a general problem with using such a thing on the
> >> RHS in formula-based modeling functions:
> >> set.seed(3)
> >> yy <- rnorm(20)
> >> gg <- rep(1:10, 2)
> >> y <- tapply(yy, gg, median)
> >> x <- 1:10
> >> z <- lm(y ~ x) # OK
> >> z <- lm(x ~ y) # crashes R
> >> (R 1.8.1 on Windows XP Pro)
> kjetil> What exactly do you mean by "crashes R"
> kjetil> Doing this in R1.9.0, windows XP pro, there is no indication of
> kjetil> problems.
> nor is there with 1.9.0 or R-patched on Linux,
> nor with R 1.8.1 on Linux.
> no warning, no error, no problem at all.
> Is it really the above (reproducible, thank you!) example
> that crashes your R 1.8.1 ?
It does it for me: Windows XP Pro, R 1.9.0 (P IV, 2.4 GHz, 256 Mo RAM).
It freezes RGui and a few seconds later, a Windows message appears
saying that Rgui front-end met a problem and must be closed.
Dr Renaud Lancelot
Ambassade de France - SCAC
BP 834 Antananarivo 101
tél. +261 (0)32 04 824 55 (cell)
+261 (0)20 22 494 37 (home)
More information about the R-help