Dear R-devel,
There seems to be a discrepancy in the order in which lm and rlm evaluate their
arguments. This causes rlm to sometimes produce an error where lm is just fine.
Here is a little script that illustrate the issue:
library(MASS)
## create data
n - 100
dat -
Dunlap [mailto:wdun...@tibco.com]
Sent: Monday, March 14, 2011 1:39 PM
To: Vadim Ogranovich; r-devel@r-project.org
Subject: RE: [Rd] discrepancy between lm and MASS:rlm
-Original Message-
From: r-devel-boun...@r-project.org
[mailto:r-devel-boun...@r-project.org] On Behalf Of Vadim
Dear R-developers,
I am trying to figure out a way to call browser() when an error occur, and
naturally I want the browser() to be called in the environment of the error.
I tried something simple in vain:
f - function() { x - 1; stop('ok') }
tryCatch(f(), error=browser())
Called from:
48839
language R
version.string R version 2.9.1 (2009-06-26)
-Original Message-
From: Joshua Ulrich [mailto:josh.m.ulr...@gmail.com]
Sent: Friday, October 15, 2010 1:31 PM
To: Vadim Ogranovich
Cc: r-devel@r-project.org
Subject: Re: [Rd] calling browser on error
I believe options
...@tajo.ucsd.edu]
Sent: Friday, June 25, 2010 9:16 PM
To: Vadim Ogranovich
Cc: 'r-h...@r-project.org'
Subject: Re: [R] converting result of substitute to 'ordidnary' expression
On Fri, 25 Jun 2010, Vadim Ogranovich wrote:
Dear R users,
As substitute() help page points out:
Substituting
Dear R Developers,
I am writing a function that would save all objects in all environments
'visible' from the point where the function is called (very much like
save.image, but kind of saving the entire stack).
I figured that the call
lapply (seq(0, sys.nframe()), function(i) ls(sys.frame(i),
Thank you Martin! The new 'rule'-s is exactly what I wanted. It's intuitive and
consistent with the scalar use.
Thanks,
Vadim
-Original Message-
From: Martin Maechler [mailto:maech...@stat.math.ethz.ch]
Sent: Tuesday, July 28, 2009 5:00 AM
To: Vadim Ogranovich
Cc: 'William Dunlap'; r
message when yleft, yright, and f are set to
non-scalars is better than silently returning NA.
Thanks,
Vadim
-Original Message-
From: William Dunlap [mailto:wdun...@tibco.com]
Sent: Monday, July 27, 2009 12:14 PM
To: Vadim Ogranovich; r-devel@r-project.org
Subject: RE: [Rd] bug in approx
Dear R-devel,
The following line crashes R
approx(1, 1, 0, method='const', rule=2, f=0, yleft=NULL, ties='ordered')$y
Process R:2 exited abnormally with code 5 at Tue Jul 21 14:18:09 2009
version
_
platform i386-pc-mingw32
arch i386
os mingw32
Actually, the correct permutation is given by the inverse of qr$pivot:
foo$coefficients[foo$qr$pivot] - foo$coefficients
Here foo is an object returned by lsfit, see below.
-Original Message-
From: Vadim Ogranovich
Sent: Friday, March 13, 2009 5:25 PM
To: 'r-devel@r-project.org
Dear R-devel,
It seems that lsfit incorrectly reports coefficients when the input matrix 'x'
is rank-deficient, see the example below:
## here values of 'b' and 'c' are incorrectly swapped
x - cbind(a=rnorm(100), b=0, c=rnorm(100)); y - rnorm(100); lsfit(x, y)$coef
Intercept a
In Progress:
* EURO DOLLAR data for trading Z* and vice versa
* scripts for computing asset correlations w/ application to ED
* improving R code for collecting stats accross dates and groups of data.
Completed:
* New signals for US Equity (based on PK alpha). Brandon will simulate and
deploy if
Hi,
I'd like to say thank you to the developers of Rscript. It is a nice tool that
allows integration of R into multi-tool work flow and, in my experience so far,
it does exactly what is expected of a utility program.
Thank you very much!
Vadim
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