Displaying 20 results from an estimated 600 matches similar to: "R validation"
2007 Nov 03
0
R validation. If you know what you want, it's simple. If you don't know what you need to do, there are problems...(with any validation)
> From: delphine.fontaine at genexion.com
> To: r-help at stat.math.ethz.ch
> Date: Sat, 3 Nov 2007 09:03:39 +0100 (CET)
> Subject: [R] R validation
> Dear R-Users,
>
> A message to continue the discussions we had in March and June. I have
> read the documents written since then
> (http://www.r-project.org/doc/R-FDA.pdf ;
>
2007 Jul 17
3
logical operators priority
Dear R-users,
I haven?t found rules for logical operators. I need to select data according
the following rule:
Condition A & (Condition B | Condition C) How should I write it?? Is
Condition A & Condition B | Condition C correct or will R execute (Condition
A & Condition B) | Condition C ?
Thanks for your help.
Delphine Fontaine
Delphine Fontaine
Statistician
Statistics
2008 Jan 08
2
problem when extacting columns of a data frame in a new data frame
Dear R-users,
I would like to create a new data frame composed of 2 columns of another
data frame. But it does not give me what I want...
> casesCNST[1:10,]
case X1 X2 X3 X4 expected
1 A1 0 0 0 0 E
2 A2 0 0 0 1 C
3 A3 0 0 0 2 C
4 A4 0 0 0 3 C
5 A5 0 0 0 4 C
6 A6 0 0 1 0 C
7 A7 0 0 1 1 C
8
2007 Mar 09
6
R and clinical studies
Does anyone know if for clinical studies the FDA would accept
statistical analyses performed with R ?
Delphine Fontaine
2008 Jan 02
1
extracting pvalue from ANOVA with repeated measures
I made an ANOVA with repeated mesures
(aov(Mesure~Distance*Genre*Correct+Error(Sujet/(Distance*Genre*Correct)),
data)) and I would like to extract the pvalues.
The output is:
-----------------------------------------------------------
Error: Sujet
Df Sum Sq Mean Sq F value Pr(>F)
Residuals 21 97.082 4.623
Error: Sujet:Distance
Df Sum Sq Mean Sq F value Pr(>F)
Distance
2007 Sep 17
1
longtable and Sweave
Dear Sweave-users,
I want to print listing using sweave. Because my tables are very big, I use
the longtable option. But, is it possible to recall the first line of the
table (e.g the colnames line) on each new page ?
Thanks for your help.
Delphine
2007 Mar 09
1
useR! 2007 --- Call for papers and posters
R Users and Developers,
The first North American useR! will be held at Iowa State University,
Ames, Iowa, August 8?10, 2007. Information about the meeting can be
found at http://www.user2007.org/.
We are now ready to accept paper and poster submissions.
Papers are encouraged in all areas, but particular emphasis is given
to work describing newly created or improved R packages. Papers will
2007 Mar 09
1
useR! 2007 --- Call for papers and posters
R Users and Developers,
The first North American useR! will be held at Iowa State University,
Ames, Iowa, August 8?10, 2007. Information about the meeting can be
found at http://www.user2007.org/.
We are now ready to accept paper and poster submissions.
Papers are encouraged in all areas, but particular emphasis is given
to work describing newly created or improved R packages. Papers will
2007 Sep 04
1
UseR! 2007 presentations and posters - now available
Hi everyone,
Many of the presentations and posters from UseR! 2007 are now available online:
http://user2007.org/program/
If you presented and your slides or poster isn't up yet, please email
a pdf version to me, h.wickham at gmail.com, and I'll put it up.
Regards,
Hadley
(And check out http://user2007.org/ for some photos of the event and the R cake)
--
http://had.co.nz/
2008 Sep 18
2
Writing greek letters and subscripts in graph
Dear R-users,
I would like to write Greek letters followed by subscripts in a graph (on the X-axis and in a legend). I would appreciate any help.
thank you,
delphine courvoisier
************************************
Delphine Courvoisier
Clinical Epidemiology Division
University of Geneva Hospital
+4122 37 29029
2009 Jan 11
2
R, clinical trials and the FDA
I hope that Marc doesn't mind, but I felt that part of his recent post
was important enough to deserve it's own subject line rather then
being lost in a 60-msg-long thread...
On Sun, Jan 11, 2009 at 10:08 AM, Marc Schwartz
<marc_schwartz at comcast.net> wrote:
...
I strongly believe that the comments regarding R and the FDA are overly
negative and pessimistic.
The hurdles to
2007 Feb 11
0
useR! 2007
R Users and Developers,
Plans are being made to hold the first North American useR! will be
held at Iowa State University, Ames, Iowa, August 8?10, 2007, which
will be a week after JSM'07.
This follows successful meetings in Vienna, Austria, in 2006 and 2004,
and also Directions in Statistical Computing (DSC) meetings in
Auckland, NZ (Feb 2007), Seattle (2005), and Vienna (1999, 2001,
2003).
2007 Apr 20
0
useR! 2007 online registration is now available
R Users and Developers,
Online registration for useR! 2007 is now available on the conference
web site. The deadline for the early registration discount has been
extended to May 15.
We haven't had many contributed papers as yet, or requests for travel
support from young researchers and graduate students. Please consider
contributing a paper, and encouraging your students and young faculty
to
2007 Apr 20
0
useR! 2007 online registration is now available
R Users and Developers,
Online registration for useR! 2007 is now available on the conference
web site. The deadline for the early registration discount has been
extended to May 15.
We haven't had many contributed papers as yet, or requests for travel
support from young researchers and graduate students. Please consider
contributing a paper, and encouraging your students and young faculty
to
2017 Oct 05
0
dealing with a messy dataset
Is this a fixed width format?
If so, read.fwf() in base, or read_fwf() in the readr package will solve the problem. You may need to trim trailing spaces though.
B.
> On Oct 5, 2017, at 10:12 AM, jean-philippe <jeanphilippe.fontaine at gssi.infn.it> wrote:
>
> dear R-users,
>
>
> I am facing a quite regular and basic problem when it comes to dealing with datasets,
2017 Dec 04
1
problem with the behaviour of dashed lines in R plots
hi Sarah,
Thanks a lot for having taken time to answer me and for your reply. I
wonder how I missed this solution. Indeed plotting the line with the 2
extreme data points works perfectly.
Best,
Jean-Philippe Fontaine
On 04/12/2017 18:30, Sarah Goslee wrote:
> It's because you are plotting a line between each of the points in
> your data frame, and they are very close togethe
2006 Sep 12
1
server linux
Hello
I am the administrator of a server linux with 25 clients.
Lasdt year : no problem.
Each children saves files in the same directory on the server.
But now, the teachers want that the children have different directories.
Then 600 children have a directory on the server and each directory is secured by a password.
When they want to save a file on the server, a lot of them may not open their
2017 Dec 04
0
problem with the behaviour of dashed lines in R plots
Hi,
It's because you are plotting a line between each of the points in
your data frame, and they are very close together:
> cbind(df1$B,predict(regressor,df1))
[,1] [,2]
1 1.410832 -13.96466
2 1.589383 -15.21169
3 1.446662 -14.21491
4 1.488665 -14.50826
5 1.487035 -14.49687
6 1.497347 -14.56890
7 1.458070 -14.29458
8 1.568134 -15.06328
9 1.543364 -14.89029
10 1.513473
2017 Oct 05
0
dealing with a messy dataset
It looks like fixed width. I just used the last position of each
field to get the size and used the 'readr' package;
> input <- "And XVIII 000214.5+450520 0.69 17 9 0.00
-8.7 26.8 6.44 6.78 < 6.65 -44 0.5 MESSIER031 0.6
1.54
+ PAndAS-03 000356.4+405319 0.10 17 0.00 -3.6 27.8
4.38 2.8 MESSIER031
2017 Dec 04
3
problem with the behaviour of dashed lines in R plots
dear R users,
I am performing a linear regression with lm, and I would like to plot
the regressor in dashed lines. I know that the lty=2 option is the way
out, but it has a very strange behaviour: the line starts dashed but
then the spaces between each dash becomes very tiny and so the line
become somehow continuous for the human eye. Do you know how to fix that
problem, in order to have a