On 16 Nov 2013, at 03:06 , Charles Berry ccbe...@ucsd.edu wrote:
Rolf Turner r.turner at auckland.ac.nz writes:
I *do* see the same phenomenon that Bert describes and the code of
predict.lm()
*does* appear to contain a bug. There is a line:
[snip]
The operative difference
version.string R version 3.0.2 (2013-09-25)
nickname Frisbee Sailing
**
-Original Message-
From: peter dalgaard [mailto:pda...@gmail.com]
Sent: Saturday, November 16, 2013 4:36 AM
To: Charles Berry
Cc: r-help
Subject: Re: [R] Bug in predict.lm?
On 16
Yes, I realize that it is more likely a misunderstanding on my part.
Suitable humility will be tendered if this is pointed out.
The claimed bug is that predict.lm throws an error when the scale
argument is specified with interval = conf (and in some other
cases):
z - lm(rnorm(10)~I(1:10))
Bert Gunter gunter.berton at gene.com writes:
Yes, I realize that it is more likely a misunderstanding on my part.
Suitable humility will be tendered if this is pointed out.
The claimed bug is that predict.lm throws an error when the scale
argument is specified with interval = conf (and
I *do* see the same phenomenon that Bert describes and the code of
predict.lm()
*does* appear to contain a bug. There is a line:
XRinv - if (missing(newdata) is.null(w))
But w gets assigned (as object$weights) only if (is.null(scale)).
If that assignment is moved outside of the
The same problem appears on a 64-bit linux:
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 3
minor 0.2
year 2013
month 09
day25
svn rev63987
language R
On 13-11-15 11:57 AM, Bert Gunter wrote:
Yes, I realize that it is more likely a misunderstanding on my part.
Suitable humility will be tendered if this is pointed out.
The claimed bug is that predict.lm throws an error when the scale
argument is specified with interval = conf (and in some
Charles Berry ccberry at ucsd.edu writes:
Bert Gunter gunter.berton at gene.com writes:
[snip]
I do not see this (see below).
Maybe traceback() or options(recover=browser) to get
to the bottom??
Argh! I meant:
options(error = recover)
[rest deleted]
Rolf Turner r.turner at auckland.ac.nz writes:
I *do* see the same phenomenon that Bert describes and the code of
predict.lm()
*does* appear to contain a bug. There is a line:
[snip]
The operative difference between my set-up and Chuck's is that I am using
version 3.0.2 Patched.
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