Displaying 20 results from an estimated 31 matches for "radcliffe".
2004 May 27
2
Is it possible to read jpeg files into R?
...using a simple black-and-white line graph,
but the numeric result appears to be much too complex for
a simple line graph and I cannot see how to use image or
contour to re-create the original jpeg image. Is there an
R routine to do this?
Thanks, in advance, for your help,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2004 Mar 19
2
How to collect trees grown by rpart
...100) resmat[run]=rpart(y~., data=train[run])
>
> So that, later, I can do:
> for (run in 1:100) pred[run]=predict(resmat[run], newdat)
>
> But, resmat[run] does not work, even though it saves the cptables.
>
> Thanks, in advance,
>
> Jonathan Williams
> OPTIMA
> Radcliffe Infirmary
> Woodstock Road
> OXFORD OX2 6HE
> Tel +1865 (2)24356
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.or...
2004 Mar 11
3
making operators act on rows of a data frame
...actical in the program I am trying to write (where
the columns I wish to sum are numerous and change from time to time).
I would be very grateful to know if it is possible to get operators
to act on rows of a data frame, and if so, how.
I am running R1.8.1 on Windows NT.
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2003 Jan 20
2
Too many e-mails
...o ask a specific question. I did not realise
that I would start to receive all e-mails to and from
the mailing list. Is there a way of letting me receive
only the answers to my own questions? If not, then can
you remove me from the mailing list?
Thanks,
Jonathan Williams
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2003 Jan 17
1
Survr error
...So, the difficulty would
seem to be with the 'id' argument of Survr. In my program, r1d[,1]
is a simple numeric vector, which I have put into the data frame
r1d.
I would be grateful fi anyone could let me know how to use Survr
so that I can run survfitr.
Thanks,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2003 Dec 30
1
odd results from polr vs wilcoxon test
...-0.4474
8|9 0.6187 0.4688 1.3198
9|10 2.1965 0.7453 2.9472
10|12 2.9441 1.0259 2.8698
Residual Deviance: 124.4085
As far as I can see, there is no error message from polr. Could someone let
me know
what I am doing wrong?
Thanks, in advance,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2001 Apr 24
1
New Package Released: PTAk
...ot too big multi-arrays for the next release demos
Didier
--
Didier G. Leibovici didier at fmrib.ox.ac.uk +44 (0)1865 222 739
Image Analysis Group fax:+44 (0)1865 222 717
Oxford University, Centre For Functional Magnetic Resonance Imaging of
the Brain (FMRIB), John Radcliffe Hospital, Headington, Oxford OX3 9DU,
U.K
http://www.fmrib.ox.ac.uk/~didier/
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Send "info", "help", or "[un]subscr...
2001 Apr 24
1
New Package Released: PTAk
...ot too big multi-arrays for the next release demos
Didier
--
Didier G. Leibovici didier at fmrib.ox.ac.uk +44 (0)1865 222 739
Image Analysis Group fax:+44 (0)1865 222 717
Oxford University, Centre For Functional Magnetic Resonance Imaging of
the Brain (FMRIB), John Radcliffe Hospital, Headington, Oxford OX3 9DU,
U.K
http://www.fmrib.ox.ac.uk/~didier/
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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2003 May 19
1
plotting a simple graph
...newdat=data.frame(x1=seq(min(x1),max(x1),(max(x1)-min(x1))/10),x2=mean(x2),x
3=mean(x3),x4=mean(x4),x5=mean(x5))
#then this gives 2 parallel horizontal regression lines, which is also
incorrect
Please could someone enlighten me on how to plot the regression lines?
Thanks,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2004 Apr 27
3
R hang-up using lm
...ne
lines(lowess(y[x2==0]~x1[x2==0]))
I can also avoid the problem by coercing x1 and x2 to be vectors.
So, I don't need help to solve the problem. But, it seems an odd
problem since it affects one plotting method, but not the other,
and it actually causes R to crash.
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2000 Jul 05
1
function SAS dataset to R matrix (dataframe)
...taset (PC one .sd2)
to a dataframe or matrix in R?
thanks
--
Didier G. Leibovici didier at fmrib.ox.ac.uk +44 (0)1865 222 739
Image Analysis Group fax:+44 (0)1865 222 717
Oxford University, Centre For Functional Magnetic Resonance Imaging of
the Brain (FMRIB), John Radcliffe Hospital, Headington, Oxford OX3 9DU,
U.K
http://www.fmrib.ox.ac.uk/~didier/
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe&qu...
2003 Feb 13
1
(no subject)
...equently, and unpredictably, it fails and R just stops. As I
say, the operating system continues and any other programs that are multi-
tasking are unaffected.
If anyone could give me an idea on how to avoid this problem, I'd be
grateful.
Thanks,
Jonathan Williams
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2003 Feb 13
0
(no subject)
...operating system continues and any other programs
> that are multi-
> tasking are unaffected.
>
> If anyone could give me an idea on how to avoid this problem, I'd be
> grateful.
>
> Thanks,
>
> Jonathan Williams
>
>
> Jonathan Williams
> OPTIMA
> Radcliffe Infirmary
> Woodstock Road
> OXFORD OX2 6HE
> Tel +1865 (2)24356
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> http://www.stat.math.ethz.ch/mailman/listinfo/r-help
>
-------------------------------------------------------...
2003 Aug 11
0
Designing and incorporating a digital filter
...lue' = yv[12];
}
}
I'd like to know how to incorporate this into my R code (or, better, I'd
like to know how to design bandpass filters directly in R - the help file
for the filter() function does not detail how to do this)
Thank you
Jonathan Williams
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2004 Mar 15
2
imputation of sub-threshold values
Is there a good way in R to impute values which exist,
but are less than the detection level for an assay?
Thanks,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
2004 Apr 27
0
Extracting labels for residuals from lme
...oth give the result
"side.(Intercept)xxx" where xxx is simply the row number
of the data frame in the lme. I want to be able to access
the unit identities (604, 606, 610 and 646 in the above
table). Could someone tell me how to get them?
Many thanks, in advance,
Jonathan Williams
OPTIMA
Radcliffe Infirmary
Woodstock Road
OXFORD OX2 6HE
Tel +1865 (2)24356
PS, I am using R 1.9.0 on a Windows NT platform
(though I don't suppose it makes any difference).
2003 Apr 23
1
permission denied from packages-4-stable on ftp5.freebsd.org
I'm getting permission denied for;
ftp://ftp5.freebsd.org/pub/FreeBSD/ports/i386/packages-4-stable/
The welcome message on the machine says;
If there are any problems with this server, please send mail to %E.
Who should I let know about this so it actually gets seen ?
Ta,
P.
--
pir pir-sig@pir.net pir-sig@net.tufts.edu
2003 Nov 17
2
Hang on boot with 4.9-STABLE
Yet another hang on boot issue wqith 4.9. I havn't seen anything the
same go through the list and I've searched the archives but not found
anything appropriate.
Box that has been rock solid under 4.8-P3, took it to 4.9-R and
4.9-STABLE (as of today) and it hangs on boot after the apm0
line. It's doing SMP and the motherboard has hyperthreading enabled.
It won't break out to the
2006 Mar 24
2
3Com Phones
Greetings,
We are looking at installing a VoIP system with Asterisk and are
currently looking at the line of 3Com phones. Has anybody had
success with using the following phones? We need to buy a lot and we
don't want to end up with phones that don't work properly with asterisk.
3Com 3101 (model with speakerphone)
3Com 3102 Business Phone
3Com 3103 Manager Phone
3Com 3105
2006 Jan 12
3
linksys SPA-941
does anyone get a hold of the SPA-941 Provisioning Guide?
i tried call Sipura's tech support, seems like none of
them heard of the term "remote provisioning". they kept
refering me to their web site which i've check thoroughly,
and could not find any documentations on the SPA-941. finally
they gave me a phone number to call, which appears to be a fax
machine. that's when i