!
Nevertheless, perhaps francophone statisticians will have a
default interpretation of dispersion in such a context.
With thanks for any help,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 08-Jul-05
On 08-Jul-05 Anders Schwartz Corr wrote:
Dear R-help,
I am trying to impute missing data for the first time using R.
The norm package seems to work for me, but the missing values
that it returns seem odd at times -- for example it returns
negative values for a variable that should only be
On 09-Jul-05 Ted Harding wrote:
On 08-Jul-05 Anders Schwartz Corr wrote:
[...]
]...]
Meanwhile, I will try to have a look at the dataset whose URL
you give, and see if I have any more specific comments.
Now that I look at the histograms of your 21 variables, I would
not think of treating
one, if that would
be useful for the case in hand.
Best wishes to all,
Ted.
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Date: 11-Jul-05 Time: 22:19:47
-rnorm(1000,0,sqrt(26))
nomod-sqrt(12*26)*runif(1000)
boxplot(data.frame(cbind(unimod,nomod,bimod)))
Best wishes,
Ted.
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Date: 12-Jul-05
) so as to
include the entirety of each successive graph?
Best wishes to all,
Ted.
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Date: 13-Jul-05 Time: 09:12:34
.
best wishes
rksh
On 13 Jul 2005, at 09:12, (Ted Harding) wrote:
Although this is an over-worked query -- for which an answer, given
that t=l has been specified, is to use
plot(a,t=l,col=blue,ylim=c(0,10))
lines(b,t=l,col=red)
there is a more interesting issue associated
,] 1.2 1.4 1.6
[5,] 1.1 1.3 1.5
[6,] 1.2 1.4 1.6
If there's an exception under which the above does not work,
I'd be interested to hear of it!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44
this helps,
Ted.
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Date: 23-Jul-05 Time: 22:22:15
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Software world. There are also several programs
for non-Linux platforms.
Sorry I can't help with suggestions for creating .avi files.
Best wishes,
Ted.
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Date: 27
.
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wishes,
Ted.
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Date: 09-Aug-05 Time: 18:48:42
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.
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9
B[A==0]-NA
B
# [,1] [,2] [,3]
# [1,]1 NA7
# [2,] NA58
# [3,]369
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 16-Aug-05
as though
1*outer(D,C,==)
does what you want (and shows up that E[1,5] and E[1,6] seem
to be wrong in your example, since D[1] = C[5] = 0 and
D[1] = C[6] = 0).
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email
are categorical and use 'cat' instead.
You have to make that choice yourself.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 21-Aug-05
On 23-Aug-05 Duncan Murdoch wrote:
[...]
... in extreme cases, read the documentation.
One for fortunes?
Ted.
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Date: 23-Aug-05
: (Ted Harding) [EMAIL PROTECTED]
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Date: 26-Aug-05 Time: 09:53:38
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.
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PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 03-Sep-05
.
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Date: 05-Sep-05 Time: 16:11:22
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for it.
Thanks for reading so far!
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 06-Sep-05 Time: 14:29:26
@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date
if you would respond to the comments above in terms of the real
situation you are dealing with, so that we know what sort of thing
we should be thinking about.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax
that some of you may
have been thinking of asking ... ).
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 13-Sep-05 Time: 08:30:03
of these ;-)
-thomas
Except, perhaps, from people (like me) who had not read that FAQ
-- and who knows what legions these may be?
;)
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 13-Sep
simply
want to store a batch of lines for later processing, then
set a (possibly large) number of lines to be read at a time.
An so on.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094
On 13-Sep-05 Ted Harding wrote:
[..]
Except, perhaps, from people (like me) who had not read that FAQ
-- and who knows what legions these may be?
;)
Ted.
Apologies that people may have received two copies of the above message.
When I first sent it there was a bounce on the grounds
On 13-Sep-05 vittorio wrote:
Alle 21:26, martedì 13 settembre 2005, Ted Harding ha scritto:
...
Have a look at ?scan.
You will have to do several things which depend on your hardware
setup, your operating system, the behaviour of your medical
applicance
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Date: 14-Sep-05 Time: 13:09:55
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-order bit on top).
If so, or if you precisely describe the binary format you have,
then the above or similar should be easy to get into R.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094
, I deconstruct
my example below (see at end).
On 9/16/05, Ted Harding [EMAIL PROTECTED] wrote:
On 16-Sep-05 David Barron wrote:
I have a number of datasets that are multipunch column-binary
format.
Does anyone have any advice on how to read this into R? Thanks.
David
Do you mean
not got anything the wrong way round there!)
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 19-Sep-05 Time: 10:17:55
one
(or vice versa). They could also be running an editor session
to write their own course notes.
Anyway, there it is if you hadn't heard of it.
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email
plot(v1) first!
Good luck, and best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 22-Sep-05 Time: 11:04:30
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they were a more
helpful reply would be easier to formulate!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 26-Sep-05 Time: 15:56:48
? Is the scatter so large that
the groups are not well separated? Might we have twice-wrapped
data (i.e. original y 2)?
In short, do your real data look like the data you sent us, and
are they wrapped at 1.0? or what?
With thanks, and best wishes,
Ted.
(Ted Harding) wrote:
On 26-Sep-05 nwew wrote:
Dear R
be useful.
Just a suggestion. There may be, in some R package, a function
which implements this approach in a better way.
Over to the gurus at this point!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44
I retract the siggestion I proposed last night -- it was based
on a bad hunch! Sorry for wasting time.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 27-Sep-05
# [1] 8
numbers%%(10^(12-d1))
# [1] 6999 7001
as desired!
Thanks also to Patrick Burns and Jim Holtman for other suggestions
based (in effect) on diff(range(numbers)).
On 29-Sep-05 Ted Harding wrote:
Hi Folks,
I'm trying to find a neat solution to an apparently simple
problem, but one
or
particular methodology or particular software.
With best wishes,
Ted. [Or should I sign as Emmanuel Lasker?]
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 30-Sep-05
to get this dome.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 03-Oct-05 Time: 22:00:11
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.
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Date: 08-Oct-05 Time: 14:14:48
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.
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Date: 12-Oct-05 Time: 23:55:45
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.
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Date: 21-Jul-06 Time: 23:34:05
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this, only you can say!
Hoping that this helps!
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 25-Jul-06 Time: 12:21:24
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 07-Aug-06 Time: 10:25:31
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.
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Date: 13-Aug-06 Time: 15:21:09
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be useful
to have it explicit. (Or is it intended simply as a
reminder that one is using a particular system of
contrasts?)
Thanks, and best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 24-Aug-06
://stat.ethz.ch/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]
Fax-to-email
a
line (I'll send them privately to Sam anyway).
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 01-Sep-06 Time: 15:56:46
are present at the same time.
In summary: design of a graphic display is literally an art.
What one display can reveal, another will conceal.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 11-Sep-06 Time: 13:42:22
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[Sorry -- errors due to mistyping especially at below.
Corrected in the following lines.]
On 11-Sep-06 Ted Harding wrote:
On 11-Sep-06 Gregor Gorjanc wrote:
It seems that 'internal' method was used (I use R 2.3.1 under
Linux) as indicated in help page of download.file. I could
use wget
.
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Date: 12-Sep-06 Time: 01:28:15
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differ by more than
a tolerance which by default is .Machine$double.eps but
which can be set to something else if you wish.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 18-Sep-06
the cumulative frailty ... !
Suggestions welcome!
With thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 22-Sep-06 Time: 20:25:12
into the model.
I'll look futher into those suggestions.
Thanks,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 23-Sep-06 Time: 12:23:44
On 22-Sep-06 Ted Harding wrote:
I've just come across a kind of problem which leads
me to wonder how to approach it in R.
Basically, each a set of items is subjected to a series
of impacts until it eventually fails. The force
of each impact would depend on covariates X,Y say
set is an uncertain comparison.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 25-Sep-06 Time: 15:33:59
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 05-Oct-06 Time: 09:18:51
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Declaration: I have been on to R Site Search.
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 06-Oct-06 Time: 20:29:02
Many thanks for your comments, Deepayan; and I liked your
recursive solution! Fun indeed.
Just a comment (below) on one of your comments (the rest
snipped).
On 06-Oct-06 Deepayan Sarkar wrote:
On 10/6/06, Ted Harding [EMAIL PROTECTED] wrote:
Hi Folks,
Given a series of n independent
-result$y_rdm)^2))
result
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 07-Oct-06 Time: 09:53:43
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below for
reference.
On 10/6/06, Ted Harding [EMAIL PROTECTED] wrote:
Hi Folks,
Given a series of n independent Bernoulli trials with
outcomes Yi (i=1...n) and Prob[Yi = 1] = Pi, I want
P = Prob[sum(Yi) = r] (r = 0,1,...,n)
I can certainly find a way to do it:
Let p be the vector c(P1
)), inverse = TRUE)/5
On 10/7/06, Ted Harding [EMAIL PROTECTED] wrote:
Hi again.
I had suspected that doing the calculation by a convolution
method might be both straightforward and efficient in R.
I've now located convolve() (in 'base'!!), and have a solution
using this function
not seem to throw anything up.
(Or maybe they just did it, and didn't think it worth saying
anything about--but it's not really trivial).
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date
of breath if the total number of items gets much above, say 10.
Hoping this helps!
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861
Date: 13-Oct-06 Time: 17:40:20
for your data, but your description does not
suggest that this is the case.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 167 1972
Date: 15-Sep-04 Time: 15
tests for skewness, for
normality, and for equality of variances.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 22-Sep-04
[lower.tri(C)])
[1] 2 3 4 5 6 7
See ?lower.tri
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 23-Sep-04 Time: 20:37:36
is that every image which is rendered
on a device based on bit-mapping is necessarily dirty, even if
optical trickery gives the opposite impression!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 11-Oct-04 Time: 08:48:43
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as an extra package.
Hoping this helps,
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 13-Oct-04 Time: 16:44:49
d C
2 e C
3 f D
3 f E
3 f F
3 g D
3 g E
3 g F
See 'man join' for details of options which you can use to
adapt the command to your needs.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 16-Oct-04 Time: 10:39:05
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, n, T, t, F, f
and Date data are MMDD
(I'm assuming that there are no Memo data, which are not stored
in the DBF file but in a separate DBT file).
Hope this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email
CSV file
can be mended by piping it through 'tr', as in
cat oldCSVfil.csv | tr -d '' newCSVfile.csv
(assuming, of course, that you don't have field data
with commas inside ... )
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL
at the time, and other
people looking over their shoulder, or over-hearing, can come
in with their view of the matter.
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 06
the other.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 19-Oct-04 Time: 08:27:01
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a clean
solution for (a,b) and then you have it. (Note point [3] has not
been used.)
I think!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 20-Oct-04
://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 20-Oct-04
Now that I think of it:
qqplot(x,qnorm(0.005+0.01*(0:99)),yaxt=n)
axis(2, at=qnorm(p), label=p, las=1)
Ted.
On 20-Oct-04 Ted Harding wrote:
Well, I think he probably meant something more like
x - sort(rnorm(100))
y-0.5+(0:99)
p - c(0.01, 0.05, 0.5, 0.95, 0.99)
plot(x,qnorm(y/100
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
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Date: 26-Oct-04 Time: 20:13:33
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) - dnorm(3) + u*pnorm(3) - pnorm(-u)
(using the default values mu=0 and s=1 for dnorm and pnorm).
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 28-Oct-04
these in the above formulae for a and b to get
a and b directly, without needing to do an explicit logistic regression
on the completed dataset.
Hoping this helps!
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0
){!all(is.na(x))}
and then
newDF - DF[apply(DF,1,notallna),]
This will leave in every record in which not all fields areNA,
so will include records in which only some fields are NA.
Hoping this helps,
Ted.
E-Mail: (Ted Harding
really meaning
|1/sum(ni*Wi)| 0.2
in which case the problem would not have a definite solution
unless you state restrictions on the series {ni}.
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44
!
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 08-Nov-04 Time: 14:29:46
-- XFMail
On 08-Nov-04 Ted Harding wrote:
[...]
choose(600,31)
[1] 1.612899e+300
[...]
my.choose3-function(x,y){
if((x==y)||(y==0)) return(1);
m - min(y,x-y)
prod(seq(x,(x-m+1),by=-1)/(seq(m,1,by=-1)))
}
when
my.choose3(600,31)
[1] 1.613121e+300
On 08-Nov-04 Ted Harding wrote:
On 08-Nov-04 Ted Harding wrote:
[...]
choose(600,31)
[1] 1.612899e+300
[...]
my.choose3-function(x,y){
if((x==y)||(y==0)) return(1);
m - min(y,x-y)
prod(seq(x,(x-m+1),by=-1)/(seq(m,1,by=-1)))
}
when
my.choose3
On 08-Nov-04 Duncan Murdoch wrote:
On Mon, 08 Nov 2004 15:56:49 - (GMT), (Ted Harding)
[EMAIL PROTECTED] wrote :
Further investigation indicates that there is an integer truncation
problem with 'choose':
print(choose(600,1),digits=20)
[1] 60001679906.0
print(my.choose3
example, p = q = 1, so the density function is 1 everywhere.
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 09-Nov-04 Time
] -0.27767009 -0.01242218 0.06244776 0.11646301
mean(Y[!is.na(Y)])
[1] -0.04101397
but I'm sure somebody out there will come up with a much
more elegant solution!
Best wishes,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED
Sorry! I had omitted to copy in an essential line in the code
below:
On 11-Nov-04 Ted Harding wrote:
On 11-Nov-04 Wei Yang wrote:
Hi,
I have a list of numbers. For each of the numbers, I take
sum of squares of the numbers centered on the number chosen.
If it is less than a certain
.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 14-Nov-04 Time: 08:50:53
-- XFMail
not the only one.)
I'd be interested in people's comments on this proposal.
Best wishes to all,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 16-Nov-04
(y1|y2).]
Hoping this helps,
Ted.
E-Mail: (Ted Harding) [EMAIL PROTECTED]
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 17-Nov-04 Time: 09:37:20
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