Full_Name: Krzysztof Podgorski
Version: R version 2.4.1 (2006-12-18)
OS: Windows XP
Submission from: (NULL) (130.235.3.79)
The function ''det'' works improperly for a singular matrix and returns a
non-zero value even if ''solve'' reports singularity. The matrix is very simple
as shown below.
A
The function ''det'' works improperly for a singular matrix and returns a
non-zero value even if ''solve'' reports singularity. The matrix is very
simple
as shown below.
A - diag(rep(c(64,8), c(8,8)))
A[9:16,1] - 8
A[1,9:16] - 8
det(A)
#[1] -196608
solve(A)
#Error in
On Fri, 1 Jun 2007 16:22:18 -0700,
Deepayan Sarkar (DS) wrote:
Hi,
this is tangentially related to the recent discussion on vignettes.
vignette() currently produces a listing of available vignettes, but
these are not clickable. Since R has a browseURL() function, it seems
natural
Hi, All:
The following identifies apparent inconsistencies and proposed
fixes between the documentation and the behavior of 'nls'.
Specifically, the help file says 'data' 'Can also be a list'.
However, I got an error when I tried it with a list that could not be
coerced to a
Friedrich Leisch [EMAIL PROTECTED] writes:
Looks good to me, and certainly something worth being added to R.
2 quick (related) comments:
1) I am not sure if we want to include links to the Latex-Sources by
default, those might confuse unsuspecting novices a lot. Perhaps
make those
On 6/4/07, Seth Falcon [EMAIL PROTECTED] wrote:
Friedrich Leisch [EMAIL PROTECTED] writes:
Looks good to me, and certainly something worth being added to R.
2 quick (related) comments:
1) I am not sure if we want to include links to the Latex-Sources by
default, those might confuse
Deepayan Sarkar wrote:
On 6/4/07, Seth Falcon [EMAIL PROTECTED] wrote:
Friedrich Leisch [EMAIL PROTECTED] writes:
Looks good to me, and certainly something worth being added to R.
2 quick (related) comments:
1) I am not sure if we want to include links to the Latex-Sources by
default,
Folks,
I think this is a nice idea (and not very different to somethign I have
bene playing with), but with lots of CHARSXP changes pending I'd
like to come back to it next week or so.
Sorry, Deepayan, you've happened to hit a very busy stage in R
development.
Brian
On Mon, 4 Jun 2007,
On 6/4/07, Prof Brian Ripley [EMAIL PROTECTED] wrote:
Folks,
I think this is a nice idea (and not very different to somethign I have
bene playing with), but with lots of CHARSXP changes pending I'd
like to come back to it next week or so.
Sorry, Deepayan, you've happened to hit a very busy
Hi - I tried to get some answer before but there seems to have no one response.
My question is that I have a class like below definition:
setClass(DBManager,
representation(channel=RODBC))
My purpose of the conn slot is to hold a channel to database connection which
is returned by a
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