11 March 2008 08:58:55.
See my response to him:
Re: [R] glm.fit: fitted probabilities numerically 0 or 1 occurr
From: (Ted Harding) [EMAIL PROTECTED]
Date: Tue, 11 Mar 2008 10:08:09 - (GMT)
which covers the maun issues.
The underlying reason is that some linear function of your
covariates
.
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.
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be. Sexually mature?
There might be a better model for it than the logistic curve.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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grateful for any suggestions (including worked
examples of datasets) arising from it!
With thanks again, and best wishes to all,
Ted.
-FW: [EMAIL PROTECTED]-
Date: Tue, 11 Mar 2008 00:17:18 - (GMT)
From: (Ted Harding) [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Longitudinal with binary
wishes,
Ted.
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say, pointers to
an R treatment of similar problems would be most welcome.
With thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 11-Mar-08 Time: 00
of packages
which includes:
MASS, class, nnet, spatial
So if you install VR you will have the MASS package.
And MASS includes lda().
With best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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thought you were doing!
It is certainly not the same as fitting
y = a + b1*x + b2*(x^2)
though of course the fitted values will be the same.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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values; then seek the
value of 'a' which minimises chisq.
However, it's not really possible to advise in more detail
without being sure of what you are trying to do. Above,
I am only guessing!
Best wishes,
Ted.
E-Mail: (Ted
)
if(any(x[1:(n-1)]==x[2:n])){
min(which(x[1:(n-1)]==x[2:n]))
} else max(x)
### Result: [1] 10
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 05-Mar-08
as distributed in the way one would
normally expect or, perhaps, there was nothing
unusual about the distribution.
Comments welcome!
With thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 02-Mar
.
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: (Ted Harding) [EMAIL PROTECTED]
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or, perhaps, there was nothing
unusual about the distribution.
Comments welcome!
With thanks,
Ted.
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Date: 02-Mar-08
, self-contained, reproducible code.
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p1 - 0.2; p2 - 0.3; p3 -0.5
S0 - cbind(rf1(500),rf2(500),rf3(500))
ix - sample(c(1,2,3),500,prob=c(p1,p2,p3),replace=TRUE)
S - S0[,ix]
hist(S,breaks=50)
Hoping this helps.
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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the
values you are writng about?
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 20-Feb-08 Time: 19:55:00
Hoping this helps,
Ted.
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/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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2008
4) [R] No response for help
Fri Feb 15 14:29:06 CET 2008
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 15-Feb-08 Time: 18:17:03
(x){!all(is.na(x))})
##[1] TRUE TRUE FALSE
M[,apply(M,2,function(x){!all(is.na(x))})]
## [,1] [,2]
##[1,]11
##[2,]22
##[3,]3 NA
##[4,]44
Ted.
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: (Ted Harding) [EMAIL PROTECTED]
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,
and you cannot mix types in a matrix, so this will coerce
all the variables to character type. So it's your original
way which does the forcing!
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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(though you would have to visit the archives
at https://stat.ethz.ch/pipermail/r-help/ to see any replies).
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 11-Feb-08
3 until happy (or bored).
The EM Algorithm, in most cases, falls into the class
of procedures to which Aitken Acceleration is applicable.
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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-function(...) windows(...)}
Hoping this helps,
Ted.
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over the
binary operators *, + and -.
Enter
?Syntax
to get a listing of the various operators in order of
precedence.
Hoping this helps,
Ted.
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Date: 04
require me to sniff your butt.
Best wishes to all,
Ted.
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Date: 30-Jan-08 Time: 20:14:40
.
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.
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answer authoritatively for the motivations of those
who did!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 28-Jan-08 Time: 21:46:28
to a variable as a full-dress
arithmetic parade!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 28-Jan-08 Time: 23:34:52
)
will reach the list. But I dare say the rest of us can
live with that. I certainly could.
Best wishes, and thanks for your care of our list.
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 18-Jan-08
implies X is TRUE for any X.
But FALSE would also imply that X is FALSE, so you are entitled
to your view as well, Martin.
With best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 16
a standard contrast function,
but I would prefer to delegate it all (including
calculation of SE and P-value) to a run of glm().
With thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 10-Jan-08
), then:
d - b ; d[a==B] - c[a==B]
which simply over-writes the b-values in d where a==B.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 10-Dec-07
suggestions?
with thanks,
Ted.
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to be fair to all.
Best wishes to all,
Ted.
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.
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would expect from 'hist(runif(100))'.
I'm not using it any more.
Ted.
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300 380 460 540 620 700 780 860 940
and have therefore been computed from the range of
the data, and not from the specified range of the x-axis.
Help please!
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax
therefore been computed from the range of
the data, and not from the specified range of the x-axis.
Help please!
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 30-Nov
.
Another approach would be on the lines of
-5*(X==0) + 5*(X==1)
Hoping this helps,
Ted.
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Date: 10-Nov-07 Time: 09:32
in this case would be X, no?
Best wishes,
Ted.
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.
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you can be 96% confident
that the tie-broken P-value is less than this value).
and so on.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 06-Nov-07
://www.stat.math.ethz.ch/pipermail/r-help/2005-May/071287.html
https://www.stat.math.ethz.ch/pipermail/r-help/2005-May/071297.html
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 05
observation.
how can I apply this condition to all observations?
If A is a vector of ages, one way to do it would be
age1 - 1*(A=12)(A32) + 2*(A=32)(A52) +
3*(A=52)(A72) + 4*(A=72)(A100)
Best wishes,
Ted.
E-Mail: (Ted
three.
Can anyone help by stating the syntax for fitting the OR
as well as the marginals? Or might it be the case that,
despite the above citation, it in fact can not be done?
With thanks,
Best wishes,
Ted.
E-Mail: (Ted Harding
)
???
Any takers?
(I see that Zelig makes use of functions in VGAM, so
Thomas Yee's statement about vglm() may imply that
zelig() has the same limitations, and if so can not do
what the documentation says it should be able to do).
On 01-Nov-07 12:11:06, Ted Harding wrote:
Hi Folks,
According
virtualbox, which seems to me to run very well]
With thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 02-Nov-07 Time: 00:21:44
: logit(mu1),
## logit(mu2), logit(mu3), logit(mu4)
but that seems to be going to greater lengths than
one should need to!
Any comments and suggestions will be welcome!
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL
.
But now it does not work, but https does work; so: Yes,
you are right, and it should be as you say!
Ted.
From: (Ted Harding) [EMAIL PROTECTED]
Subject: Re: [R] r achives
On 19-Oct-07 09:36:52, raymond chiruka wrote:
sorry but how do i accsess r archives
If you mean the archive
On 20-Oct-07 15:23:25, Ted Harding wrote:
On 20-Oct-07 13:53:11, Alan Zaslavsky wrote:
I think that should be
https://stat.ethz.ch/pipermail/r-help/
(note https prefix)
Well, I thought so too: My bookmark has https.
But, in replying to Raymond Chiruka, I wondered whether
).
Hoping this helps,
Ted.
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with #!,
the remainder of the firstline specifies
an interpreter for the program.
Hmm ...
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 18-Oct-07 Time
), the same check as in (1) should be carried
out: Has it made any difference that matters to the results,
compared with what you get from the original data?
Hoping this helps (at least a bit).
Ted.
E-Mail: (Ted Harding) [EMAIL
??
Of course, for a more general case, you'd need a method for
generating the appropriate version of c(1,4,2,5,3,6) -- e.g.
something like Robin's seq.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870
Prob(chisq = x) with df degrees
of freedom, for given x, qchisq(p,df) tells you what value
of x will give Prob(chisq = x) = p for a given value of p.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0
=blue,...)}
Thanks, and best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 07-Oct-07 Time: 20:49:26
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On 07-Oct-07 21:01:08, Deepayan Sarkar wrote:
On 10/7/07, Ted Harding [EMAIL PROTECTED] wrote:
Hi Folks,
I'm curious for an explanation of the following -- it's a
matter of trying to understand how R parses it.
I've written sundry little helper variants of functions,
in particular plot
,
Rolf Turner
And Cheers!
Ted.
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a solution the problem you pose
look at ?within (new in R 2.6.0) just in case.
On 10/3/07, Ted Harding [EMAIL PROTECTED] wrote:
Hi Folks,
The question I'm asking, regarding the use of function
definitions in the context described below, is whether
there are subtle traps or obscure
.
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Date: 25-Sep-07 Time: 12:40:36
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.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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On 25-Sep-07 12:34:47, Duncan Murdoch wrote:
On 9/25/2007 7:45 AM, (Ted Harding) wrote:
On 25-Sep-07 11:11:44, Patrick Burns wrote:
Just speaking of the field I'm most familiar with, there
are now users of R in many of the largest financial
companies in the world.
http://www.burns-stat.com
.
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, self-contained, reproducible code.
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Date: 20-Sep-07 Time: 15:17:14
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-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 20-Sep-07 Time
- read.my.file(my-new-file)
Hoping this helps,
Ted.
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Date: 17-Sep-07 Time: 20:08:47
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and provide commented, minimal, self-contained, reproducible code.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 17-Sep-07 Time: 14:52:57
: (Ted Harding) [EMAIL PROTECTED]
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Date: 15-Sep-07 Time: 12:55:00
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it is wise
to spit out the result.
Thanks, and best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 14-Sep-07 Time: 10:59:42
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