Re: [R] Linux R / Windows client

2012-03-18 Thread Tobias Verbeke

L.S.

On 03/18/2012 02:39 PM, Mag Gam wrote:


correct, but for StatET i believe I can only use the local R installed
to do my computation. My intention is to use my Linux server -- which
as 128GB of memory and 32 cores to do my calculations and I want to
connect to it via Windows Eclipse GUI.


That is perfectly possible. In summary you need to get the
rj-consoleserver tarball from the StatET website, untar it
(on the GNU/Linux machine) and edit the startup.sh script
that is included.

From your Windows client you then configure a so-called
Remote R Console within Eclipse and point to the startup.sh
file on the server.

It is BTW possible to tunnel all traffic over SSH just by
checking the appropriate box in the Remote Console run
configuration.

Help  Help Contents  StatET User Guide  R Console  Remote Console

gives some more extensive explanations.

Should you have further questions, don't hesitate to ask on
the StatET mailing list.

http://lists.r-forge.r-project.org/mailman/listinfo/statet-user

Best wishes,
Tobias


On Sun, Mar 18, 2012 at 9:13 AM, jose Bartolomeisurfpr...@hotmail.com  wrote:


Hi,

I do not understand why you want to do that but


both Eclipse and StatEt are available for Linux environment.


Then, you can have everything running on Linux



http://www.eclipse.org/downloads/


http://www.walware.de/goto/statet


Jose






Date: Sun, 18 Mar 2012 08:56:39 -0400
From: magaw...@gmail.com
To: r-help@r-project.org
Subject: [R] Linux R / Windows client




Hello,

I am currently running R on ubuntu and everything is working perfectly
fine. However, I would like to connect to R via Windows using Eclipse
StatEt plugin. Is this possible to do? or do I have to have a version
of R running on Windows also? I prefer to have Linux do the heavy
lifting and Windows Eclipse to be a sort of GUI.

Any thoughts?

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Re: [R] Eclipse StatET - create own code formatting

2011-11-19 Thread Tobias Verbeke

Hi Syrvn,

On 11/19/2011 03:08 PM, syrvn wrote:


does anybody know whether it is possible to create its own code formatting
rules?

Defining rules under Eclipse -  Preferences -  R Code Formatting is so
limited.


There is a dedicated mailing list for StatET here

http://lists.r-forge.r-project.org/mailman/listinfo/statet-user

Maybe you can tell there what you are missing currently?

Best,
Tobias

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Re: [R] Access R functions from web

2011-06-25 Thread Tobias Verbeke

Hi Caveman,

On 06/25/2011 11:18 AM, Orvalho Augusto wrote:


I need a way to send R objects and call R functions from web. Is there any
project close or similar to that?

I want to be able to send an HTTP rquest from an existing application with
some data. And obtain a plot from R.


This is one of the typical integration scenarios
the R Service Bus is able to cope with.

http://www.openanalytics.eu/r-service-bus

The REST interface is documented here

http://rsb.doc.openanalytics.eu/
http://rsb.doc.openanalytics.eu/wsdocs/index.html

Best,
Tobias

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Re: [R] R licence

2011-04-07 Thread Tobias Verbeke

On 04/07/2011 04:46 PM, Ista Zahn wrote:


I don't think R-help is the appropriate place for this question.
Probably you will have more luck at http://www.theattorneysforum.com/
or some such.


I would hope, though, there are means for community members
to express their concerns in some medium of the community.

Fortes fortuna iuvat!

Best,
Tobias


On Thu, Apr 7, 2011 at 10:36 AM, Matthew Dowlemdo...@mdowle.plus.com  wrote:

Duncan,

Letting you know then that I just don't see how the first paragraph here :

http://www.revolutionanalytics.com/downloads/gpl-sources.php

is compatible with clause 2(b) here :

http://www.gnu.org/licenses/gpl-2.0.html

Perhaps somebody could explain why it is?

Matthew


Duncan Murdochmurdoch.dun...@gmail.com  wrote in message
news:4d9da9ff.9020...@gmail.com...

On 07/04/2011 7:47 AM, Matthew Dowle wrote:

Peter,

If the proprietary part of REvolution's product is ok, then surely
Stanislav's suggestion is too. No?


Revolution has said that they believe they follow the GPL, and they
haven't been challenged on that.   If you think that they don't, you could
let an R copyright holder know what they're doing that's a license
violation.

My opinion of Stanislav's question is that he doesn't give enough
information to answer.  If he is planning to distribute R as part of his
product, he needs to follow the GPL.  If not, I don't think any R
copyright holder has anything to complain about.

Duncan Murdoch


Matthew


peter dalgaardpda...@gmail.comwrote in message
news:be157cf5-9b4b-45a0-a7d4-363b774f1...@gmail.com...


  On Apr 7, 2011, at 09:45 , Stanislav Bek wrote:


  Hi,

  is it possible to use some statistic computing by R in proprietary
  software?
  Our software is written in c#, and we intend to use
  http://rdotnet.codeplex.com/
  to get R work there. Especially we want to use loess function.


  You need to take legal advice to be certain, but offhand I would say
that
  this kind of circumvention of the GPL is _not_ allowed.

  It all depends on whether the end product is a derivative work, in
which
  case, the whole must be distributed under a GPL-compatible licence.
The
  situation around GPL-incompatible plug-ins or plug-ins interfacing to
R in
  GPL -incompatible software is legally murky, but using R as a
subroutine
  library for proprietary code is clearly crossing the line, as far as I
can
  tell.

  --
  Peter Dalgaard
  Center for Statistics, Copenhagen Business School
  Solbjerg Plads 3, 2000 Frederiksberg, Denmark
  Phone: (+45)38153501
  Email: pd@cbs.dk  Priv: pda...@gmail.com



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Re: [R] Revolution Analytics reading SAS datasets

2011-02-11 Thread Tobias Verbeke

On 02/10/2011 07:44 PM, David Smith wrote:

The SAS import/export feature of Revolution R Enterprise 4.2 isn't
open-source, so we can't release it in open-source Revolution R
Community, or to CRAN as we do with the ParallelR packages (foreach,
doMC, etc.).

It is, though, available for download free of charge to members of the
academic community (as is all of Revolution Analytics' software) from
http://www.revolutionanalytics.com/downloads/


timeo Danaos et dona ferentes


On Wed, Feb 9, 2011 at 5:46 PM, Daniel Nordlunddjnordl...@frontier.com  wrote:

Has anyone heard whether Revolution Analytics is going to release this 
capability to the R community?

http://www.businesswire.com/news/home/20110201005852/en/Revolution-Analytics-Unlocks-SAS-Data

Dan

Daniel Nordlund
Bothell, WA USA






VP of Marketing, Revolution Analytics  http://blog.revolutionanalytics.com


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Re: [R] Problem with xlsx package

2011-02-10 Thread Tobias Verbeke

On 02/10/2011 05:30 PM, Gabor Grothendieck wrote:

On Thu, Feb 10, 2011 at 10:49 AM, Nikhil Joshinikhiljo...@gmail.com  wrote:

Gabor,
thanks for the suggestion.
I did as you have suggested- Started a clean session of R and set the java
option.  Then I sourced the library and tried to read the xlsx file but got
the same error.  I am assuming that Java machine is loaded when the package
xlsx is sourced and not when the base package is sourced (or in other words
upon starting a new R session).  Or am I totally off?
Regards
Nikhil



The JVM would be initialized when xlsx is loaded or when certain
functions in the package are called depending on how the package was
written so as long as you set the java.parameters option prior to
issuing the library(xlsx) command you should be ok.  If that does not
work and assuming the number I suggested is big enough then it must be
something else.  You could try contacting the author to see if other
users have experienced this.

If you still can't get it to work there are a number of alternatives
listed here:
http://rwiki.sciviews.org/doku.php?id=tips:data-io:ms_windows


There is also this recent thread on rosuda-devel which might
be of instructive:

http://mailman.rz.uni-augsburg.de/pipermail/stats-rosuda-devel/2011q1/001621.html

Best,
Tobias

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Re: [R] rj packages and eclipse

2011-01-31 Thread Tobias Verbeke

Hi Sebastián,

You can find the rj package here:

http://www.walware.de/it/downloads/

and the installation instructions
here:

http://www.walware.de/it/statet/installation.mframe?jump=install-rj-rpkg

If you have further questions, don't
hesitate to join the StatET-specific
mailing list at

http://lists.r-forge.r-project.org/mailman/listinfo/statet-user

or search its archives at

http://lists.r-forge.r-project.org/mailman/swish.cgi?query=listname%3D%22statet-user%22

Best,
Tobias

On 01/31/2011 07:43 AM, Sebastián Daza wrote:

Hi everyone!

Does anyone know how to install the rj package in Windows (7)? I am
trying to set up eclipse, but I got [INFO] The R package 'rj' is not
available, R-StatET tools cannot be initialized.

Thank you in advance!

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Re: [R] R-/Text-editor for Windows?

2011-01-28 Thread Tobias Verbeke

Hi Sascha,

On 01/28/2011 07:55 PM, Sascha Vieweg wrote:

Tinn-R (http://www.sciviews.org/Tinn-R/) is one of the topmost
suggestions when googling an R-(text-)editor for Windows. However, to me
it appears dissappointing that Tinn-R does not handle utf-8 (mac-roman,
or any other) encoded R-scripts or, in general, text files. Besides
Emacs and the R built-in editor, could you recommend a good editor for
Windows, even some commmercial for a small price? (For a comparison,
TextMate for OS X is 35 USD and does a great job on all plain text and
code related issues, not only R.)


One of the platform independent ones is StatET:

http://www.walware.de/goto/statet

Best,
Tobias

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Re: [R] using gsarima package with R

2011-01-23 Thread Tobias Verbeke

Hi Nandan,

On 01/23/2011 08:52 PM, nandan amar wrote:

I am trying to use function garsim from package gsarima.
I can download gsarima package from
http://cran.fyxm.net/web/packages/gsarima/index.html for linux.
But how I can add it to R.
I have compiled and installed R from its R source code under Ubuntu.


$ sudo R
install.packages(gsarima) # install at R command line

library(gsarima)  # load the package
?garsim  # look a the help page of the function

Hope this helps,
Tobias

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Re: [R] using gsarima package with R

2011-01-23 Thread Tobias Verbeke

On 01/24/2011 05:05 AM, nandan amar wrote:

Thanks a lot.
I am getting following errors on,


R CMD INSTALL gsarima_0.0-2.tar.gz (gsarima_0.0-2.tar.gz is in same directory 
where I am running R)

Error: unexpected symbol in R CMD


and


install.pacakges('gsarima',dep=TRUE,clean=TRUE)

Error: could not find function install.pacakges


You spelled it incorrectly.

Best,
Tobias


On 24 January 2011 03:10, Tobias Verbeke
tobias.verb...@openanalytics.eu  wrote:

Hi Nandan,

On 01/23/2011 08:52 PM, nandan amar wrote:


I am trying to use function garsim from package gsarima.
I can download gsarima package from
http://cran.fyxm.net/web/packages/gsarima/index.html for linux.
But how I can add it to R.
I have compiled and installed R from its R source code under Ubuntu.


$ sudo R
install.packages(gsarima) # install at R command line

library(gsarima)  # load the package
?garsim  # look a the help page of the function

Hope this helps,
Tobias







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Re: [R] editor for MacOS

2010-12-16 Thread Tobias Verbeke

On 12/16/2010 04:54 PM, Marc Schwartz wrote:

On Dec 16, 2010, at 9:41 AM, Troels Ring wrote:


Dear friends - I'm using Tinn-R in Windows and find it OK. My son is running 
MacOS and is just starting using R and I know nothing about MacOS and R but we 
seem to have difficulties in finding something similar to Tinn for MaC. What 
are your suggestions?
Thanks a lot!
Troels Ring, MD
Aalborg, Denmark



I have not used Tinn-R, so can't speak for specific functions. That being said, 
Emacs/ESS is perhaps the most conceptually similar environment. It is also 
portable across Windows, OSX and Linux, which can provide consistency 
advantages if supporting multiple platforms.


As it is difficult to measure 'conceptual similarity', let me
add another cross-platform option, namely Eclipse and its
StatET plug-in

http://www.walware.de/goto/statet

Best,
Tobias


Vincent Goulet has made it easy to install for OSX with a binary image. More 
info here:

   http://vgoulet.act.ulaval.ca/en/ressources/emacs/mac

He also has a Windows installer here:

   http://vgoulet.act.ulaval.ca/en/ressources/emacs/windows


Further OSX specific queries are also best posted to:

   https://stat.ethz.ch/mailman/listinfo/r-sig-mac

HTH,

Marc Schwartz

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Re: [R] StatET: Connecting to a remote rterm instance

2010-12-02 Thread Tobias Verbeke

Dear WanderingWizard,

On 12/02/2010 07:58 PM, WanderingWizard wrote:


Is it possible to use Eclipse (StatET) to connect to an rterm instance
running on another computer?


Yes. You can launch, disconnect and reconnect to a remote R console.


It looks like it should be easy, but when I
select an R Engine it says Connection failed to: hostname everytime.  Is
there a guide somewhere?


There is Eclipse Help available in the StatET User Guide
(Help   Help Contents  StatET..)
and additional information can be found (if needed) in
the archives of the StatET user list

http://lists.r-forge.r-project.org/mailman/listinfo/statet-user

searchable here

http://lists.r-forge.r-project.org/mailman/swish.cgi?query=listname%3D%22statet-user%22

Best,
Tobias

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Re: [R] R + Linux Ubuntu 10.10

2010-11-20 Thread Tobias Verbeke

Hi Maximilien,

On 11/20/2010 01:51 PM, Maximilien Renard wrote:


I've just installed Linux (K)Ubuntu 10.10 as well as R and I'm stuck
with a very annoying problem.

I've compiled the latest R version from the sources without any
problem, sadly when I start R in a terminal, it does not behave as
expected. In fact, I cannot use the arrow keys (up, down, left, right)
because they are automatically replaced with things like ^[[A

I have no idea if it R related or not but it is very annoying and I'd
appreciate any help.


You need to compile R with readline support
(and for that libreadline-dev needs to be
installed IIRC).

Best,
Tobias

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Re: [R] class matrix lost when extracting a row from matrix

2010-09-19 Thread Tobias Verbeke

On 09/19/2010 10:02 AM, h...@wiseadvice.eu wrote:


Good morning experts!

situation:

class(myMatrix)=matrix
class(myMatrix[(1:2),]))=matrix
class(myMatrix[1,])= character

consequences are far reaching as, for instance colnames(myMatrix[(1:2),]) !=
colnames(myMatrix[1,]) or names(myMatrix[(1:2),]) !=  names(myMatrix[1,])

My question:
1. How can the coercion to character be avoided and the attributes of the
original object myMatrix of class matrix been preserved when slicing out
one row of the matrix?
2. Is there a reason why there is a loss of generality in that sense that
a matrix of dimension (1xn) is treated differently than a matrix of
dimension (mxn); m,n1 ? in other words is there a reason why class vector
is needed at all?


m - matrix(1:4, 2)

m[1,, drop = FALSE]
#  [,1] [,2]
# [1,]13

m[, 1, drop = FALSE]
#  [,1]
# [1,]1
# [2,]2

See ?Extract

HTH,
Tobias

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Re: [R] split file equivalent in R

2010-07-19 Thread Tobias Verbeke

Hi,

On 07/19/2010 11:56 AM, Iasonas Lamprianou wrote:


(a)in SPSS PASW there is a 'split file' command is repeats the same analysis 
for all sub-groups. Is there a split file equivalent in R?


There is a by command in base R, but for this type of problems
Hadley Wickham has written a nice package 'plyr' available on
CRAN. See also the package home page:

http://had.co.nz/plyr/

HTH,
Tobias

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Re: [R] Using Ubuntu as a Server

2010-07-11 Thread Tobias Verbeke

Hi Leandro,

On 07/10/2010 08:46 PM, Leandro Marino wrote:


I want to know how can I configure R in a Ubuntu to be a server.

I am planning to use R in a Windows machine with Tinn-R, but I want R
running at an Ubuntu Lucid machine.

How can i do this?


One possibility is to use Eclipse/StatET on the Windows machine
and configure a remote console (to be running on your GNU/Linux
server).

The StatET user list has posts with explanations on how
to achieve this.

http://lists.r-forge.r-project.org/mailman/listinfo/statet-user

http://lists.r-forge.r-project.org/mailman/swish.cgi?query=listname%3D%22statet-user%22

Best,
Tobias

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Re: [R] Good Package(s) for String and URL processing?

2010-07-02 Thread Tobias Verbeke

On 07/02/2010 05:51 AM, Erik Iverson wrote:

Ralf B wrote:

Are there packages that allow improved String and URL processing?
E.g. extract parts of a URLs such as sub-domains, top-level domain,
protocols (e.g. https, http, ftp), file type based on endings, check
if a URL is valid or not, etc...

I am currently only using split and paste. Are there better and more
efficient ways to handle strings e.g. finding sub-strings or to do
pattern matching?
What packages do you use if you have to do a lot of String processing
and you don't have the option to go to another language such as Perl
or Python?



Well, much of the power of Perl is built on top of regular expressions,
which R also supports.

See ?regex for more details. Also the R functions ?grep, ?sub, etc.

I can also highly recommend the book Mastering Regular Expressions. It
does not cover R explicitly, but what you learn in there can be directly
applied to R. Regexs go very, very far with helping you with the task of
finding substrings and pattern matching.

You might find some things in RCurl helpful:

http://www.omegahat.org/RCurl/

Probably others...


Including gsubfn by Gabor Grothendieck
and stringr by Hadley Wickham

http://cran.r-project.org/web/packages/gsubfn/index.html
http://cran.r-project.org/web/packages/stringr/index.html

Best,
Tobias

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Re: [R] Agreement

2010-05-04 Thread Tobias Verbeke

Hi Grégoire,

HB8 wrote:

Has Lawrence Lin's code been ported to R?
http://tigger.uic.edu/~hedayat/sascode.htmlhttp://tigger.uic.edu/%7Ehedayat/sascode.html


One of Lin's methods (CCC) is available in function
epi.ccc of the epiR package.

Best,
Tobias

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Re: [R] Symbols in biplot

2010-04-27 Thread Tobias Verbeke

Hi Ara,

Ara Kooser wrote:

   I just started in on R today. I am at the point where I am trying  
to distinguish different groups of data (hydrochemical data) in  
biplot. I search and found a post about converting the sample number  
in biplot to a symbol like x or +


 temp - matrix(runif(50), nrow=10)
  temp.pca - princomp(temp)
  biplot(temp.pca, xlabs=c(A, A, B, B, B, C, C, C,  
D, D))


When I try this:
  biplot(pca,xlabs=c(X))
Error in dimnames(x) - list(xlabs, dimnames(x)[[2L]]) :
   length of 'dimnames' [1] not equal to array extent

I guess I am not understanding fully what xlabs is doing and what the  
array extent is. 


You need to add as many symbols (i.e. a character vector
with as many elements) as there are rows in your dataset

biplot(temp.pca, xlabs= rep(X, 10), col = c(blue, darkgrey))

should work, similarly to the 10 symbols (A, A, B, etc.)
you used in your call above.

I was wondering if someone could clarify for me how

to change the sample numbers to a symbol?

Also is there a way to color a group of data (i.e. samples 1-50) in  
biplot?


From the help page of biplot.default, it seems the col argument can
be used only to specify the two colors for the two sets of points
which are drawn on the biplot.

Once you get familiar with R graphics, however, it should be relatively
straightforward to work out your own biplot function.

When looking through the code of biplot.default using

getAnywhere(biplot.default)

you will see places where the col argument is used
(look for col[1L] and col[2L]).

HTH,
Tobias

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Re: [R] StatEt: Error R Object Browser Update java.lang.NullPointerException

2010-04-25 Thread Tobias Verbeke

Hi Roman,

Roman Luštrik wrote:


Have you managed to resolve this? I get the same error on Karmic Koala as
well.


Are you sure you're using the latest StatET,
i.e. version 0.8.2, installed from the update
site (for Eclipse 3.5) at

http://download.walware.de/eclipse-3.5

Best,
Tobias

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Re: [R] Image RGB calculation

2010-04-16 Thread Tobias Verbeke

Hi Ole,

ole_roessler wrote:


I need to read an image (mostly jpg) and split the channel of this image to
an colour channel calculation like this:

sqrt(R²+G²+B²)


Do you have an idea what package I need to use for it, and is it possible?


For general image processing capabilities within R,
I would recommend the EBImage package which you can
find on the BioConductor repositories.


Hope this helps,
Tobias

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Re: [R] GSL in C code for R

2010-04-16 Thread Tobias Verbeke

Hi Sebastian,

J. Sebastian Tello wrote:
 Dear fellow R users,

 I am now investing time in learning how to use compiled C code to 
produces functions that can be used in R. I am just starting, and there 
is much that I need to learn, so I have a question that might be 
straight forward. I am learning how to use function in the C library GSL 
(gnu scientific library), to write C code, that I then plant to use in 
R. Is there any problem in doing this? I mean, using functions of GSL to 
write C funtions to then use them in R? I just want to make sure that 
this approach is correct, before I invest more time trying to figure out 
how to include GSL functions into my C functions. Any commentaries, 
insights or advice will be highly appreciated.



It may or may not be relevant to your query,
but there is a GSL wrapper package available
on CRAN which might be instructive or even
used directly for your purposes.

http://cran.r-project.org/web/packages/gsl/index.html

Best,
Tobias

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Re: [R] R package documentation

2010-04-14 Thread Tobias Verbeke

Hi Sébastien,

Sébastien Bihorel wrote:


I am currently writing the documentation for my first package. I have
created a short user manual using sweave/pdflatex which is distinct from the
manual/summary-of-package-functions created by R CMD CHECK. I was wondering
how could I seamlessly combine both documents.


It is common to have
- technical documentation in your .Rd files (in the man/ directory
of your package)
- functional documentation as a so-called vignette (Sweave file
documenting concrete use of your package) in the
inst/doc directory of your package.

http://cran.r-project.org/doc/manuals/R-exts.html#Writing-package-vignettes

Combining both documents into one file is not common.

I hope this helps,
Tobias

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Re: [R] R package documentation

2010-04-14 Thread Tobias Verbeke

Hi Sébastien,

Sébastien Bihorel wrote:

The .R files that I have created for all my functions are somehow used 
to generate a package manual pdf when I used R CMD CHECK. This is what 
I'd like to add in my vignette. It might be uncommon, but I saw this was 
done for several package documentations (e.g. PBS collections) and I 
kind of like this combination.


I now understand what you mean. The PBS documentation you refer to
seems a mere (manual) concatenation of a (non-LaTeX based) pdf
document and the reference manual pdf which is not generated from
a Sweave file. Such manipulations can be done using e.g. the pdfjam
toolbox by David Firth.

 http://go.warwick.ac.uk/pdfjam

Best,
Tobias

On Wed, Apr 14, 2010 at 6:52 AM, Tobias Verbeke 
tobias.verb...@openanalytics.eu 
mailto:tobias.verb...@openanalytics.eu wrote:


Hi Sébastien,


Sébastien Bihorel wrote:

I am currently writing the documentation for my first package. I
have
created a short user manual using sweave/pdflatex which is
distinct from the
manual/summary-of-package-functions created by R CMD CHECK. I
was wondering
how could I seamlessly combine both documents.


It is common to have
- technical documentation in your .Rd files (in the man/ directory
   of your package)
- functional documentation as a so-called vignette (Sweave file
   documenting concrete use of your package) in the
   inst/doc directory of your package.

http://cran.r-project.org/doc/manuals/R-exts.html#Writing-package-vignettes

Combining both documents into one file is not common.

I hope this helps,
Tobias




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Re: [R] Design of a survey using the survey package

2010-03-28 Thread Tobias Verbeke

Tom La Bone wrote:


I have looked through the new Complex Surveys book and the documentation
for the survey package and it appears to me that there are no functions in
survey that help one to design a sampling scheme. For example, in the book
section 2.8 discusses the design of stratified samples, but there is no
mention of any functions in the survey package that implement the
discussed strategies. So, am I missing something obvious here or is the
survey package meant only for analyzing survey data once you have it in
hand?


Yes.

 packageDescription(survey)
Package: survey
Title: analysis of complex survey samples
[...]

For drawing samples, see e.g. the sampling package:

http://cran.r-project.org/web/packages/sampling/index.html

HTH,
Tobias

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Re: [R] Please Post Planned Contrasts Example in lme {nlme}

2010-03-18 Thread Tobias Verbeke

Hi Martin,

Martin Turcotte wrote:

Hi I am running some linear and non-linear mixed effect models and would like 
to do some planned contrasts (a priori contrasts)

I have looked in the help and in many forums and it seems possible to do so but don't understand how to write the function and I couldn't find an example in Pinheiro and Bates. 

 lme {nlme} has a  contrasts argument but I can't understand how to code it. 


Here is a simple example of my working lme model:
dependent variable: APHIDS: log (number of aphids)
Fixed effects: DAY (time)   and  TREATMENT ( 6 different aphid treatments)
Random effects: POPULATION (each population is counted through time)

lme.fit-lme(log(APHIDS)~ DAY*TREATMENT, random = ~ DAY| 
POPULATION,data= aphid.data)

My hypothesis testing focuses on comparing Treatments ~ 1 and 4 , and eventually 2 vs 5, and 3 vs 6. 

Q1:  How can I do planned contrasts on these pairs for the main effect of TREATMENT? 


Q2: Can I also do this for the interaction term (DAY*TREATMENT)?

Q3: Would this code work for a non-linear mixed effect modelnlme( )


I would have a look at the multcomp package which allows for
defining contrasts in a very convenient way and can deal a.o.
with lme (from nlme) and mer (from lme4) objects.

http://cran.r-project.org/web/packages/multcomp/index.html

The package comes with several vignettes with example uses
(also an lmer one IIRC).

Best,
Tobias

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Re: [R] Writing dataframes to SAS XPT format

2010-03-17 Thread Tobias Verbeke

Dennis Fisher wrote:

Colleagues,

On occasion, I need to output an R dataframe to a file in SAS XPT format.  
Although the foreign package supports reading of XPT files and writing to a 
format that SAS can read, it does not support writing to XPT format (confirmed 
with Thomas Lumley, the author of write.foreign).

Has anyone developed such a function?  If so, would you be willing to share it? 
 Better yet, post it to CRAN so that it is available to all users.


http://cran.r-project.org/web/packages/SASxport/index.html

HTH,
Tobias

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Re: [R] dmvnorm masked by emdbook

2010-03-13 Thread Tobias Verbeke

Hi Dan,

For this to work, the copula package should
explicitly import dmvnorm from the mvtnorm
package by including

importFrom(mvtnorm, dmvnorm)

in their NAMESPACE file.

You can do the same thing and rebuild + reinstall
the package to solve your problem quickly, but
there might be some other imports of relevance
(I cc'ed the maintainer).

Best,
Tobias

jyan at stat.uconn.edu
Daniel Murphy wrote:

I am using curve3d in the emdbook package to graph a gaussian copula density
function generated via the copula package. Unfortunately, it appears that
emdbook masks dmvnorm from the package mvtnorm in a way that prohibits
copula from generating the gaussian copula. (Sounds very confusing!) For
example,

library(copula)
f-function(x,y) dcopula(normalCopula(0),c(x,y))
library(emdbook)
curve3d(f)

Error in dmvnorm(x, sigma = sigma) : unused argument(s) (sigma = sigma)

Is there no way for me to use those two libraries together?

Thanks,

Dan

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Re: [R] find CP

2010-03-12 Thread Tobias Verbeke

Hi,

assaedi76 assaedi76 wrote:


Thanks in advance:
 
I need to use the function mle.cp in R.  When I run this function I recive 
 
result - mle.cp(y.hald~x.hald)

Error: could not find function mle.cp
 could some one  give me a help?


There is a function of that name in the wle
package.

Make sure it is installed, then load the
package using

library(wle)

before issuing your command.

HTH,
Tobias

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Re: [R] Ubunut + Eclipse + StatET: Console terminates upon error

2010-03-11 Thread Tobias Verbeke

Hi Dirk, Janko,

Dirk Eddelbuettel wrote:


On 11 March 2010 at 19:19, Janko Thyson wrote:
| I'm trying to set up Eclispe (3.5.1) with the StatET-Plugin (0.8.1) under
| Ubuntu (Karmic) and found it strange that my console terminates every time
| something in a script produces an arbitrary error (e.g. just calling a
| missing variable, trying to perform an illegal operation etc.). Can anyone
| tell me why this happens or even better how to fix this?


I never experienced such behaviour and use Eclipse/StatET daily on
Ubuntu Karmic. I did experience weird UI behaviour once (related to
a GTK bug) and currently use this

#!/bin/bash
export GDK_NATIVE_WINDOWS=1
/opt/eclipse/eclipse -debug -consolelog -vmargs -Xms1024m -Xmx2048m 
-XX:MaxPermSize=2048m


to launch eclipse (never mind the insane vmargs ;-)

While we're at it: if you have the choice, you can upgrade to Eclipse 
3.5.2 (i.e. Galileo SR2) and to StatET 0.8.2 (which is available via the 
update site at


http://download.walware.de/eclipse-3.5

)


It so happens that I help a colleague recently to triage this.  The problem
there was that a recent rJava was needed + and installed -- and on Ubuntu and
Debian this goes into 


   /usr/local/lib/R/site-library/

and StatET -- as shipped -- does not look there.  I don't use Eclipse so I
don't recall where to set this, but in essence you need to make sure that
StatET looks where R puts things. And that tends to be


The libraries can be set (and auto-detected) when defining an R 
environment in the Preferences under StatET  Run/Debug  R

Environments.

The R environment for a particular R Console Run Configuration
is in turn set in the R Config tab (of the named Run Configuration).


R .libPaths()
[1] /usr/local/lib/R/site-library /usr/lib/R/site-library   
[3] /usr/lib/R/library   
R 


CCing Tobias just in case.


Don't hesitate if there would be further questions. There
also is a dedicated StatET user list at

https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/statet-user

HTH,
Tobias

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Re: [R] Ubunut + Eclipse + StatET: Console terminates upon error

2010-03-11 Thread Tobias Verbeke

Hi Janko,

I'm not an rJava install expert (on all but my own system
I often end up setting the appropriate environment variables
related to Java manually before launching the R CMD
INSTALL for the package), but with respect to the choice
Rterm vs. RJ Console, I would strongly advise to use the
RJ Console. It allows for a much richer IDE experience,
particularly through the Object Browser and Content Assist
(Content Assist corresponds in non-Eclipse lingo to command
completion and hover pop-ups in the editors and R Console).

Best,
Tobias

Janko Thyson wrote:

Thanks for the quick reply. I was following your hint with rJava, but I'm 
still a little lost.

I maybe should have added that the console terminating happens when launching it as Rterm, it 
works fine when running it as RJ. However, I would like to use Rterm. Here is what I 
did so far:

First of, I'm still confused about Ubuntu's sudo way of doing things. Not knowing how to authorize me as root when installing packages from a R-script, I can't write on /usr/local/lib/R/site-library or /usr/lib/R/site-library. So I turned to Synaptics, found and installed the CRAN package rJava that enables me to run the R console with Launch Type RJ within Eclipse. rJava went into /usr/lib. 

Then, launching R as RJ and trying to execute an install.packages(), Ubuntu prompted me for the specification of a valid library directory and offered to create /home/ME/i486-pc-linux-gnu-library/2.10. 


So .libPaths() would give me:
R .libPaths()
[1] /home/ME/i486-pc-linux-gnu-library/2.10 /usr/lib/R/site-library   
[3] /usr/lib/R/library   
R


I then tried to re-install the package rJava by install.packages() which 
got me the following output:

+

install.packages(rJava, repos=repos.cran, 
lib=/home/ME/R/i486-pc-linux-gnu-library/2.10)
trying URL 'http://cran.at.r-project.org/src/contrib/rJava_0.8-2.tar.gz'
Content type 'application/x-gzip' length 471971 bytes (460 Kb)
opened URL
==
downloaded 460 Kb

* installing *source* package ‘rJava’ ...
checking for gcc... gcc -std=gnu99
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes
checking whether gcc -std=gnu99 accepts -g... yes
checking for gcc -std=gnu99 option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -std=gnu99 -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for string.h... (cached) yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking for unistd.h... (cached) yes
checking for an ANSI C-conforming const... yes
checking whether time.h and sys/time.h may both be included... yes
configure: checking whether gcc -std=gnu99 supports static inline...
yes
checking whether setjmp.h is POSIX.1 compatible... yes
checking whether sigsetjmp is declared... yes
checking whether siglongjmp is declared... yes
checking Java support in R... present:
interpreter : '/usr/bin/java'
archiver: '/usr/bin/jar'
compiler: '/usr/bin/javac'
header prep.: '/usr/bin/javah'
cpp flags   : ''
java libs   : '-L/usr/lib/jvm/java-6-openjdk/jre/lib/i386/server 
-L/usr/lib/jvm/java-6-openjdk/jre/lib/i386 
-L/usr/lib/jvm/java-6-openjdk/jre/../lib/i386 -L -L/usr/java/packages/lib/i386 
-L/usr/lib/jni -L/lib -L/usr/lib -ljvm'
configure: error: One or more Java configuration variables are not set.
Make sure R is configured with full Java support (including JDK). Run
R CMD javareconf
as root to add Java support to R.

If you don't have root privileges, run
R CMD javareconf -e
to set all Java-related variables and then install rJava.

ERROR: configuration failed for package ‘rJava’
* removing ‘/home/ME/R/i486-pc-linux-gnu-library/2.10/rJava’

The downloaded packages are in
‘/tmp/RtmpbGKuzS/downloaded_packages’
Warning message:
In install.packages(rJava, repos = repos.cran, lib = 
/home/ME/R/i486-pc-linux-gnu-library/2.10) :
  installation of package 'rJava' had non-zero exit status

+

So I ran sudo R CMD javareconf, but still get the same error.

Any hints from here on?

Thanks a lot!

Janko

-Ursprüngliche Nachricht-
Von: Dirk Eddelbuettel [mailto:e...@debian.org] 
Gesendet: Donnerstag, 11. März 2010 19:40

An: Janko Thyson
Cc: r-help@r-project.org; tobias.verb...@openanalytics.eu
Betreff: 

Re: [R] Statet on Eclipse: ${project_path} is empty

2010-03-11 Thread Tobias Verbeke

Hi Paul,

Paul wrote:

I'm tryign to use Statet on Eclipse on my Kubuntu Karmic PC.  I've set 
everything up and I can start the R configuration, but the working 
directory is set to my home directory.  If I set the start in directory 
to ${worspace_loc}/${project_path} I can't start the console, with an 
error that project_path is empty.


Personally I always use (nothing more than) ${resource_loc} to set
the R working directory. Before launching R, you select a *directory*
in the Project Explorer, then launch the R Console Run Configuration
and that particular directory will be used as the working directory.

An alternative (some people prefer) is to use ${resource_container}.
In that case you select the R script you want to work with, then launch
the R Console Run Configuration of your choice and it will have the
directory (containing the file you selected) as the working directory.

As mentioned, for me selecting a directory to become the working
directory is more natural, but this is merely a matter of taste and
habit.

HTH,
Tobias

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Re: [R] Hartley's table

2010-02-26 Thread Tobias Verbeke

Hi Silvano,

Is it

library(SuppDists)
?maxFratio

you are looking for ?

Best,
Tobias

Silvano wrote:

Hi,

Does anyone know how to generate Hartley's table in R?

--
Silvano Cesar da Costa
Departamento de Estatística
Universidade Estadual de Londrina
Fone: 3371-4346

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Re: [R] counting the number of ones in a vector

2010-02-26 Thread Tobias Verbeke

Nutter, Benjamin wrote:

What you did works well.  You could also try the following.

table(x)[1]


or

sum(x==1)

HTH,
Tobias


-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Randall Wrong
Sent: Friday, February 26, 2010 9:41 AM
To: r-help@r-project.org
Subject: [R] counting the number of ones in a vector

Dear R users,

I want to count the number of ones in a vector x.

That's what I did : length( x[x==1] )

Is that a good solution ?
Thank you very much,
Randall

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Re: [R] text editors

2010-02-26 Thread Tobias Verbeke

Sharpie wrote:


Dwayne Blind wrote:

Dear all,

Do you use a text editor ? What would you recommend for Windows users ?
What
about Tinn-R ?

Thank you very much,
Dwayne




Learning a text editor is a significant and very valuable investment of your
time.  In order to maximize the return from this investment you will want to
choose an editor that works well with all the languages and operating
systems you currently use, as well as the ones you may use in the future.

For example, I spend an equal amount of time working on Windows, OS X and
Linux.  There are a ton of great Windows-only editors out there, but they
aren't a good option for me because I only use windows 1/3 of the time I'm
at a computer.

Some good editors I know of that fall into this category are Emacs, Vim and
Eclipse.  For integrating with R, Emacs has the ESS plug-in and Eclipse has
an extension called StatET.

Eclipse is a rather large in terms of file size compared to Emacs or Vim--
also I know Emacs and Vim can be used through a ssh connection.  I'm not
sure about Eclipse as I haven't used it much.  


For the record: it is perfectly possible to configure an 'R Remote
Console' in StatET which will launch R over an SSH connection. You can
then disconnect from /reconnect to an R session on server etc.

Best,
Tobias


This is important because if
you happen to be stuck on a computer that is locked down and doesn't have
your editor of choice installed there is still a chance that you will be
able to use ssh to reach a computer that does.

Personally, I use Vim and have found it just fine for my needs.


ESS: http://ess.r-project.org/
StatET:
http://www.walware.de/?page=/;jsessionid=b4d82261e53bd419d41609155e9e

-Charlie


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Re: [R] R or C++ on FreeNX servers

2009-11-25 Thread Tobias Verbeke

Hi Murray,

Murray Jorgensen wrote:


I have just found out that the machine learning group in our Faculty has
a lot of spare capacity on their FreeNX servers. I do not know a lot
about these beasts but I understand that they are a free version of
something produced by a firm called NoMachine.

They are designed for executing parallel algorithms and I thought that
they might be of use in a project of mine comparing different
model-fitting algorithms from the point of view of sensitivity to
starting values.


As far as I know FreeNX is an implementation of a protocol that
allows to connect to remote X sessions (X being the standard
windowing system for *nix systems) in an optimized way.

There is (in my understanding) no relationship to parallel algorithm
execution. Using a NX client, you can connect to a remote (often
more powerful) machine (potentially making use of multiple cores on
that machine in a parallel way), but the FreeNX part of it is just
about having the remote machine's GUI forwarded such that you can
work on the server (in a window on) on your desktop machine.

HTH,
Tobias


Anyway before revealing my near-total ignorance to my computer science
colleagues I thought I would ask if any of my fellow R users have any
experience with these things and possibly advice to offer. The CS people
 are probably using the servers in conjunction with Java or C++ and I
could possibly use the latter of these. I wondered, though, if R could
be used directly with such hardware and if so, how the parallelizing
would be handled.


Regards,   Murray Jorgensen



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Re: [R] serialized plot object (2 years later)

2009-11-23 Thread Tobias Verbeke

Hi Jack,

Jack Tanner wrote:

About 2 years ago, Tobias Verbeke asked:

I am looking for a way to capture the binary string that in normal use of 
graphics devices will bewritten to (most commonly) a file connection... Is there a 
way of capturing the binary `jpeg string'
[generated by jpeg()]?

http://tolstoy.newcastle.edu.au/R/e2/devel/07/09/4276.html

Brian Ripley's answer was Nope, unfortunately, they write to files not connections and no R object 
is involved.


Is this still the case?


Yes (assuming your question wasn't a rhetorical question).

I still think it would be a useful feature if graphics devices
could write to connections.

Best,
Tobias

P.S. Your question seems more appropriate for R-devel.

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Re: [R] SOM library - where do I find it

2009-11-18 Thread Tobias Verbeke

Hi tdm,

tdm wrote:


R version 2.9.2 (2009-08-24) - for windows


library(SOM)

Error in library(SOM) : there is no package called 'SOM'

Where can I get the SOM library from?

Thanks in advance


R is case-sensitive, so

install.packages(som)
library(som)
?som

http://cran.r-project.org/web/packages/som/index.html

HTH,
Tobias

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Re: [R] refactoring in R

2009-11-14 Thread Tobias Verbeke

Hi Peng,

Some of the refactoring methods I identified back
then were integrated into Eclipse/StatET in the
mean time.

StatET by the way contains some extensions that were
not in the original proposal on that website.

For the announcement of the latest release, see

http://lists.r-forge.r-project.org/pipermail/statet-user/2009-September/000208.html

It is advisable to use it with the rJava version
referenced in the announcement (as rJava 0.8.*
had some non-backwards-compatible API changes).

A new StatET version (a.o. adapted to rJava 0.8.x)
is likely to be released on short notice.

If you want to keep up to date, there is a dedicated
mailing list at

https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/statet-user

HTH,
Tobias

P.S. The refactoring methods are available under the Source menu,
and there is one [simple rename] made available as a QuickFix (Ctrl+1).

Peng Yu wrote:

I found the examples of how to change the code for each refactoring
activity. Are there tools that can help automate this process?

On Fri, Nov 13, 2009 at 9:16 PM, milton ruser milton.ru...@gmail.com wrote:

Hi Peng,

If that information is preliminary, so I guess you
have a more clear problem and may be you are able to
state a minimally reproducible code/example with
what you really need.

Bests

milton


On Fri, Nov 13, 2009 at 9:30 PM, Peng Yu pengyu...@gmail.com wrote:

I'm wondering if there are some tips for refactoring in R. I found the
following website, which is still preliminary. Is there any program
that can help me do refactoring in R?

http://www.r-developer.org/projects/show/refactoring

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Re: [R] refactoring in R

2009-11-14 Thread Tobias Verbeke

Hi Peng,


I'm wondering which eclipse I shall download to use with StatET. Would
you please let me know?

http://www.eclipse.org/downloads/


This depends on your needs other than R programming.
As you can see, there are Eclipse Packages targeted
at C/C++ developers, PHP developers, Java EE developers
etc.

Whatever Eclipse Package you choose, Eclipse is
a highly modular (component-based) platform and
you can install (or remove) any plug-ins you
want after installation. The StatET plug-ins will
be the first additional ones you want to install.

http://www.walware.de/it/statet/installation.mframe

For general use, I would just take Eclipse Classic.

HTH,
Tobias


On Sat, Nov 14, 2009 at 5:46 AM, Tobias Verbeke
tobias.verb...@openanalytics.be wrote:

Hi Peng,

Some of the refactoring methods I identified back
then were integrated into Eclipse/StatET in the
mean time.

StatET by the way contains some extensions that were
not in the original proposal on that website.

For the announcement of the latest release, see

http://lists.r-forge.r-project.org/pipermail/statet-user/2009-September/000208.html

It is advisable to use it with the rJava version
referenced in the announcement (as rJava 0.8.*
had some non-backwards-compatible API changes).

A new StatET version (a.o. adapted to rJava 0.8.x)
is likely to be released on short notice.

If you want to keep up to date, there is a dedicated
mailing list at

https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/statet-user

HTH,
Tobias

P.S. The refactoring methods are available under the Source menu,
and there is one [simple rename] made available as a QuickFix (Ctrl+1).

Peng Yu wrote:

I found the examples of how to change the code for each refactoring
activity. Are there tools that can help automate this process?

On Fri, Nov 13, 2009 at 9:16 PM, milton ruser milton.ru...@gmail.com
wrote:

Hi Peng,

If that information is preliminary, so I guess you
have a more clear problem and may be you are able to
state a minimally reproducible code/example with
what you really need.

Bests

milton


On Fri, Nov 13, 2009 at 9:30 PM, Peng Yu pengyu...@gmail.com wrote:

I'm wondering if there are some tips for refactoring in R. I found the
following website, which is still preliminary. Is there any program
that can help me do refactoring in R?

http://www.r-developer.org/projects/show/refactoring

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Re: [R] editors for R

2009-10-21 Thread Tobias Verbeke

Hi Mark,


After reviewing the IDE/Script Editors article at sciviews.org, I
wanted to pose a quick question here to see if anyone can offer an
opinion or commentary about GUI editors that can be installed in a
Windoze environment that allow editing/saving of remote .R files and
running R programs from within a shell that is housed in the editor
(although R itself is installed in a Linux environment).  Windoze
would essentially be providing a GUI-based tool to edit, save, and
execute without making the user copy files back and forth and switch
between various programs to execute their routines.

Thus far, BlueFish seems to come closest to this; but other
recommendations will be most appreciated.


Eclipse + StatET; see

http://lists.r-forge.r-project.org/pipermail/statet-user/2009-September/000208.html

for information on the latest release. For remote connections, you need
to install RJ-Server (on the Linux machine) and configure a Remote R
Console (on the client).

There is a dedicated mailing list at
https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/statet-user

HTH,
Tobias

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Re: [R] How do I do simple string concatenation in R?

2009-09-30 Thread Tobias Verbeke

Tobias Verbeke wrote:

Hi Ari,


How do I do simple string concatenation in R? For example:
A = klm
B = jjj
How can I assign a value to C such that C == klmjjj is True?


paste(A, B, collapse = )


Oops.

paste(A, B, sep = )

Best,
Tobias

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Re: [R] How do I do simple string concatenation in R?

2009-09-30 Thread Tobias Verbeke

Hi Ari,

How do I do simple string concatenation in R? 
For example:

A = klm
B = jjj
How can I assign a value to C such that C == klmjjj is True?


paste(A, B, collapse = )

See ?paste

HTH,
Tobias

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Re: [R] How to compile R with command completion?

2009-09-29 Thread Tobias Verbeke

Peng Yu wrote:


I want to compile R with command completion. But I don't find such an
option in configure. Can somebody let me know how to enable command
completion in an R session?


AFAIK this is not an option you set when compiling.
Did you try to type a letter (say 'l') and press the
TAB key ?

If you are not satisfied, you might want to use
other R editors or development environments (such
as StatET for Eclipse or ESS) which implement
command completion in their idiosyncratic ways.

Best,
Tobias

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Re: [R] Running an ANOVA with a BY

2009-09-28 Thread Tobias Verbeke

baxterj wrote:

I downloaded the package and got it to work with the coding:

model - function(df) {aov(values ~ WellID, data = twelldata)}


Hmm.. I guess you mean to use 'data = df' instead of 'data = twelldata'


ANOVA1way - dlply(twelldata, .(Analyte), model)
print(ANOVA1way)

This gives me degrees of freedom and sum of squares for each anova per
analyte. However, I cant get the summary(ANOVA1way) to work so that I can
get p-values, etc...  How can I do this? 


You need to extend your model function:
  - extract the bits you want
  - construct a result data frame
  - return it

and use a ddply

For example (non-tested):

model - function(df) {
  lmObj - lm(values ~ WellID, data = df)
  summaryLmObj - summary(lmObj)
  res - data.frame(intercept = coef(lmObj)[1],
 adjr2 = summaryLmObj$adj.r.squared) # extract and insert anything
  return(res)
}

(ANOVA1way - ddply(twelldata, .(Analyte), model))

HTH,
Tobias


Tobias Verbeke-2 wrote:

baxterj wrote:

I have a simple 1 way anova coded like

summary(ANOVA1way - aov(Value ~ WellID, data = welldata))

How can I use the BY function to do this ANOVA for each group using
another
variable in the dataset??  I tried coding it like this, but it doesn't
seem
to work.

summary(ANOVA1way - by(welldata, Analyte, function(x) aov(Value ~
WellID,
data = welldata)))

In SAS I would code it like this:
Proc sort data=welldata; by analyte; run;
Proc glm data=welldata;
by analyte;
class wellid;
model value = wellid;
run;

Look at the plyr package for a general solution to
this type of problems:

http://cran.r-project.org/web/packages/plyr/index.html

and its introductory guide on the package home page:

http://had.co.nz/plyr/

HTH,
Tobias

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Re: [R] Running an ANOVA with a BY

2009-09-28 Thread Tobias Verbeke

baxterj wrote:

I have a simple 1 way anova coded like

summary(ANOVA1way - aov(Value ~ WellID, data = welldata))

How can I use the BY function to do this ANOVA for each group using another
variable in the dataset??  I tried coding it like this, but it doesn't seem
to work.

summary(ANOVA1way - by(welldata, Analyte, function(x) aov(Value ~ WellID,
data = welldata)))

In SAS I would code it like this:
Proc sort data=welldata; by analyte; run;
Proc glm data=welldata;
by analyte;
class wellid;
model value = wellid;
run;


Look at the plyr package for a general solution to
this type of problems:

http://cran.r-project.org/web/packages/plyr/index.html

and its introductory guide on the package home page:

http://had.co.nz/plyr/

HTH,
Tobias

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Re: [R] for cycle with uncontinuous numbers

2009-09-27 Thread Tobias Verbeke

Hi nice people,


:-)


I would like to do a for cycle but i wish it to assume only the numers 50,
100, 200, 300, 900 and 2343
I tried to do something like

x - c(50,100,200,300,900,2343)
for (i in x){
#.
}

But it didn´t work


If you would use a reproducible code example we
could point out where the error comes from;
otherwise we can only tell this should work;
try

x - c(50,100,200,300,900,2343)
for (i in x){
  cat(i^2, \n)
}
# 2500
# 1
# 4
# 9
# 81
# 5489649

HTH,
Tobias

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Re: [R] Viewing Function Code

2009-09-15 Thread Tobias Verbeke

Michael Pearmain wrote:


I'd like to see the function code behind the barplots2() function in the
gplots package, however i come across a bit of a stumbling block of a hidden
function, can anyone help?


library(gplots)
methods(barplot2)

[1] barplot2.default*

   Non-visible functions are asterisked

barplot2

function (height, ...)
UseMethod(barplot2)
environment: namespace:gplots


getAnywhere(barplot2.default)

HTH,
Tobias

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Re: [R] Google's R Style Guide

2009-08-31 Thread Tobias Verbeke

Vitalie S. wrote:

On Fri, 28 Aug 2009 16:40:53 +0200, Kevin Wright kw.s...@gmail.com wrote:


On Fri, Aug 28, 2009 at 8:22 AM, Ted Harding
ted.hard...@manchester.ac.ukwrote:


On 28-Aug-09 12:59:24, Esmail wrote:
 Perhaps most of you have already seen this?

 http://google-styleguide.googlecode.com/svn/trunk/google-r-style.html

 Comments/Critiques?

 Thanks,
 Esmail

 ps: Reminds me of PEP 8 for Python

  http://www.python.org/dev/peps/pep-0008/

 Maybe not that surprising since Python is also one of the main
 languages used by Google.

I think it is grossly over-prescriptive. For example:
 function names have initial capital letters and no dots
is violated throughout R itself.

Ted.



Certainly R's function names are an inconsistent mess:

row.names, rownames
browseURL, contrib.url, fixup.package.URLs
package.contents, packageStatus
mahalanobis, TukeyHSD
getMethod, getS3method

It's too late to fix the established functions, but it would be nice 
to have

more reliable and sensible standards going forward into the future.


I agree, but on the other hand one should not overestimate the 
importance of the inconsistent mess.


A good IDE (such as Eclipse + StatET) provides content assist
for R that takes away the burden both of remembering and correctly 
spelling R functions (and function arguments).


It's never too late - it's only a name  not a code - search replace 
through the whole R code and have old names deprecated is not a big 
deal, isn't it?


?

Best,
Tobias

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Re: [R] RE xcel Macro Mode

2009-08-05 Thread Tobias Verbeke

spencerg wrote:

 Have you looked at RExcel and the RExcelInstaller package?

 There is now a companion book:  Heiberger and Neuwirth (2009) R 
Through Excel: A Spreadsheet Interface for Statistics, Data Analysis, 
and Graphics (Springer)?  Both Amazon and the Springer web site say it's 
not yet available.  However, the Springer booth at the Joint Statistical 
Meetings was selling copies Monday and maybe Tuesday until they ran 
out.  I believe that both Amazon and Springer would take your order and 
ship fairly soon.


 If this does not solve your problem I suggest you write directly to 
Heiberger or Neuwirth.


Or (maybe better) post a question to the rcom mailing list

http://mailman.csd.univie.ac.at/mailman/listinfo/rcom-l/

HTH,
Tobias


ryusuke wrote:

I would like to do so as well, but I faced some problems as well..


livia wrote:
 
Hi everyone, I would like to write VBA macros for accessing R and it 
is my

first attempt. I really could use some help here.

I am trying to use the following code to read data from Access. The R 
code
between  is correct as I successfully run it from R, but when I 
call it

using VBA, it comes out the error message Compile error Syntax error
   Call RInterface.RRun(mdbConnect -
odbcConnectAccess(//c/users/Shared/data.mdb))

If I would like to run a function , is the following codes correct?
 
Call RInterface.RRun(quareturn - function(x){

  ...
  ...{
  ...
   }
  ...
  })

Could anyone give me some advice?







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Re: [R] Check functions in package

2009-07-28 Thread Tobias Verbeke

Steve Lianoglou wrote:

On Jul 28, 2009, at 4:16 PM, voidobscura wrote:



Hi, I run R on a server via SSH, over a terminal.  After loading a 
specific
package, how do I know what functions are in that package?  Is there 
any way

to list or display them?



Here's one way. Let's say I load the glmnet package, at the prompt I 
could use tab-completion to which functions are exported:


R library(glmnet)
R glmnet::TABTAB
glmnet::coef.glmnet  glmnet::jerr glmnet::plot.glmnet
glmnet::predict.elnetglmnet::predict.lognet   glmnet::print.glmnet
glmnet::glmnet   glmnet::nonzeroCoef  glmnet::plotCoef
glmnet::predict.glmnet   glmnet::predict.multnet

TABTAB is hitting the tab key twice in quick succession.

There are probably better ways, but there's one option.


An alternative is (in this case) to call

library(help = glmnet)

Best,
Tobias

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Re: [R] error when installing rjags

2009-07-21 Thread Tobias Verbeke

Hi Mark,

What command did you use exactly to install the package ?

The following blog post by Yu-Sung Su

http://yusung.blogspot.com/2009/01/install-jags-and-rjags-in-fedora.html

indicates that some configure.args might need to be set to
succesfully install the package (at least on Fedora 10)

install.packages(rjags, 
configure.args=--with-jags-include=/usr/local/include/JAGS 
--with-jags-lib=/usr/local/lib/JAGS 
--with-jags-modules=/usr/local/lib/JAGS/modules)


The fact that in the error message complains some files are
not found might have to do with one of the appropriate paths
not being picked up.

HTH,
Tobias

markle...@verizon.net wrote:

   Hi All: I get the following error when trying to install the rjags package.
   I've installed the
   jags software and I'm using Fedora 10.0 and my sessionInfo is at the bottom
   of this email.
   I'm also sorry if this email ends up having control A's all over it. I still
   haven't figured how to fix that. Thanks.
   [1] LOADING MASS LIBRARY
   checking for prefix by checking for jags... /usr/bin/jags
   configure: creating ./config.status
   config.status: creating src/Makevars
   configure: creating ./config.status
   config.status: creating src/Makevars
   config.status: creating R/unix/zzz.R
   g++ -m32 -I/usr/include/R -I/usr/include/JAGS -I/usr/local/include  Â
   -fpicÂ-O2  -g  -pipe  -Wall  -Wp,-D_FORTIFY_SOURCE=2  -fexceptions
   -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic
   -fasynchronous-unwind-tables -c jags.cc -o jags.o
   jags.cc:8:21: error Console.h No such file or directory
   jags.cc:9:24: error: util/naing.h: No such file or directory
   jags.cc:20: error: 'SArray' was not declared in this scope
   jags.cc:21: error expected ',' or ';' before { token
   R version 2.9.0 (2009-04-17)
   i386-redhat-linux-gnu
   locale:
   LC_CTYPE=en_US.utf8;LC_NUMERIC=C;LC_TIME=en_US.utf8;LC_COLLATE=en_US.utf8;LC
   _MONETARY=C;LC_MESSAGES=en_US.utf8;LC_PAPER=en_US.utf8;LC_NAME=C;LC_ADDRESS=
   C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.utf8;LC_IDENTIFICATION=C
   attached base packages:
   [1] datasets  utils     stats     graphics  grDevices methods Â
   base   Â
   other attached packages:
   Â [1] gsubfn_0.3-8Â Â Â Â Â Â  proto_0.3-8Â Â Â Â Â Â Â  latticeExtra_0.5-4
   RColorBrewer_1.0-2filehash_2.0-1Â Â Â Â reshape_0.8.2Â Â Â Â Â
   plyr_0.1.8Â Â Â Â Â Â Â Â  rOpenBUGS_0.0-1Â Â Â  caret_4.19Â Â Â Â Â Â Â
   [10]dyn_0.2-8Â Â Â Â Â Â Â Â Âcoda_0.13-4Â Â Â Â Â Â Â
   lattice_0.17-22Â Â Â  zoo_1.5-5Â Â Â Â Â Â Â Â Â  chron_2.3-30Â Â Â Â Â Â
   MASS_7.2-46Â Â Â Â Â Â
   loaded via a namespace (and not attached):
   [1] grid_2.9.0
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Re: [R] time attribute from a file

2009-07-21 Thread Tobias Verbeke

Erin Hodgess wrote:

Dear R People:

I am reading in a file via read.table.   Is there a way to bring in
the time that the file was created, please?


Use file.info on the same file ?

HTH,
Tobias

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Re: [R] Comprehensive power analysis/sample size package in R?

2009-07-15 Thread Tobias Verbeke

Frank E Harrell Jr wrote:

Greg Snow wrote:
I don't know of a single package that is comparable to PASS, but the R 
system itself is the most comprehensive tool available for power and 
sample size computations.


For the simple cases you already found the pwr package, there are also 
some power functions in the stats package and in some other packages 
and these will be comparable to the equivalent (or possibly better) 
than the simple ones in PASS.


FYI, Russ Lenth is porting his piface package

http://www.cs.uiowa.edu/~rlenth/Power/

to R

http://r-forge.r-project.org/projects/piface/

Best,
Tobias

When things get a bit more complicated then there are a few different 
options for what to do next:


1. Don't provide anything for the more complicated cases.
2. Provide a minimal set of routines for more complicated cases based 
on programmer assumptions rather than information from someone 
familiar with the source of the data (assumptions often hidden).
3. Provide many different routines encompassing every alternative set 
of assumptions that the programmer can think of forcing the user to 
sort through all the options to find the one that is closest (and 
maybe the same) as what they want to do.
4  Provide a full programming language so that the people familiar 
with the question(s) of interest and the source of the data can 
explicitly spell out the desired analysis and assumptions.

5. possible others, but I can't think of any.

It looks like PASS uses option 3, giving many different routines that 
any one user in only likely to use a few of.


R is option 4.  You can decide what assumptions you want to make about 
the data (and later change any of those assumptions), decide how you 
plan to analyze the data, then by simulation you can work out the 
power/sample size/etc. knowing exactly what assumptions went into the 
analysis.




As one example of what Greg is talking about see 
http://bm2.genes.nig.ac.jp/RGM2/R_current/library/Hmisc/man/spower.html




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Re: [R] productivity tools in R?

2009-07-01 Thread Tobias Verbeke

seeliger.c...@epamail.epa.gov wrote:

snip

There is no IDE for R in the same way that there is for other languages -- 
something that supports integrated versioning, debugging and testing, 
perhaps using Eclipse.  Boy howdee, I hope someone knows otherwise.


There is a feature-rich R plug-in for Eclipse at

http://www.walware.de/goto/statet

see the link below if you'd like to install the latest testing version.

https://lists.r-forge.r-project.org/pipermail/statet-user/2009-May/000147.html

HTH,
Tobias

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Re: [R] Roxygen vs Sweave for S4 documentation

2009-06-22 Thread Tobias Verbeke
On Mon, Jun 22, 2009 at 2:18 PM, Douglas Batesba...@stat.wisc.edu wrote:
 On Mon, Jun 22, 2009 at 7:12 AM, Martin
 Maechlermaech...@stat.math.ethz.ch wrote:
 TobiasV == Tobias Verbeke tobias.verb...@openanalytics.be
     on Sun, 21 Jun 2009 08:25:07 +0200 writes:

    TobiasV Hi Ken,
     I have been using R for a while.  Recently, I have begun converting my
     package into S4 classes.  I was previously using Rdoc for 
 documentation.
     Now, I am looking to use the best tool for S4 documentation.  It seems 
 that
     the best choices for me are Roxygen and Sweave (I am fine with tex).
    
     Are there any users of Roxygen or Sweave who can comment on the 
 strengths or
     weaknesses of one or othe other?  Thanks in advance.

    TobiasV For the moment proper documentation of S4 classes (with a @slot 
 tag
    TobiasV e.g.) is not implemented yet,

 how did you define proper here?

 I know that the result of  promptClass()  may not always be
 perfect. As most things are not perfect,
 I would not quickly call this improper ...

 Or is using *.Rd  not proper for you,
 as it does not have all of code + docs in one file?

 I think Tobias was referring to Roxygen support for S4 classes, not
 the existence of .Rd tags.

Yes, I was just referring to the Roxygen support and as a matter of
fact I recommended Roxygen to mimick the nice job done by promptClass
a while ago

https://lists.r-forge.r-project.org/pipermail/roxygen-devel/2009-February/23.html

No intent to criticize nor current Rd tags nor Rd as a documentation system,
although having code + docs in one file (as in Roxygen) seems to be convenient
to some.

Best,
Tobias

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Re: [R] Roxygen vs Sweave for S4 documentation

2009-06-21 Thread Tobias Verbeke

Hi Ken,


I have been using R for a while.  Recently, I have begun converting my
package into S4 classes.  I was previously using Rdoc for documentation. 
Now, I am looking to use the best tool for S4 documentation.  It seems that

the best choices for me are Roxygen and Sweave (I am fine with tex).

Are there any users of Roxygen or Sweave who can comment on the strengths or
weaknesses of one or othe other?  Thanks in advance.


For the moment proper documentation of S4 classes (with a @slot tag 
e.g.) is not implemented yet, but my secret hope is that this will

be implemented before Peter and Manuel (in cc) will present Roxygen
at DSC2009. Maybe they have further comments ?

Kind regards,
Tobias

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Re: [R] Recursive partitioning algorithms in R vs. alia

2009-06-20 Thread Tobias Verbeke

Wensui Liu wrote:


well, how difficult to code random forest with sas macro + proc split?
if you are lack of sas programming skill, then you are correct that
you have to wait for 8 years :-)


It is true one can use the macro language to obtain some control flow 
the plain SAS language and its PROCs are missing and for manipulating 
matrices there is even a third language (IML), but my customers prefer 
to leverage community-tested open source implementations as building 
blocks rather than spending unnecessary resources in writing things from 
scratch in their corner.



i don't know how much sas experience you have. as far as i know, both
bagging and boosting have been implemented in sas em for a while,
together with other cut-edge modeling tools such as svm / nnet.


Fair enough, but whenever you will need ensemble methods for survival 
data or would like to escape bias in variable importance in presence
of categorical predictors you will (1) not be able to take something off 
the shelf and (2) neither to programmatically tweak SAS EM procedures

(as they are not exposed but locked in the GUI), so there again your
only option is to implement things from scratch.

Best,
Tobias


On Fri, Jun 19, 2009 at 4:18 PM, Tobias
Verbeketobias.verb...@openanalytics.be wrote:

Wensui Liu wrote:


in terms of the richness of features and ability to handle large
data(which is normal in bank), SAS EM should be on top of others.

Should be ? That is not at all my experience.
SAS EM is very much lagging behind current
research. You will find variants of random forests
in R that will not be in SAS for the next 8 years,
to give just one example.


however, it is not cheap.
in terms of algorithm, split procedure in sas em can do
chaid/cart/c4.5, if i remember correctly.

These are techniques of the 80s and 90s
(which proves my point). CART is in rpart and
an implementation of C4.5 can be accessed
through RWeka. For the oldest one (CHAID, 1980),
there might be an implementation soon:

http://r-forge.r-project.org/projects/chaid/

but again there have been quite some improvements
in the last decade as well:

http://cran.r-project.org/web/views/MachineLearning.html

HTH,
Tobias


On Fri, Jun 19, 2009 at 2:35 PM, Carlos J. Gil
Bellostac...@datanalytics.com wrote:

Dear R-helpers,

I had a conversation with a guy working in a business intelligence
department at a major Spanish bank. They rely on recursive partitioning
methods to rank customers according to certain criteria.

They use both SAS EM and Salford Systems' CART. I have used package R
part in the past, but I could not provide any kind of feature comparison
or the like as I have no access to any installation of the first two
proprietary products.

Has anybody experience with them? Is there any public benchmark
available? Is there any very good --although solely technical-- reason
to pay hefty software licences? How would the algorithms implemented in
rpart compare to those in SAS and/or CART?

Best regards,

Carlos J. Gil Bellosta
http://www.datanalytics.com

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Re: [R] Recursive partitioning algorithms in R vs. alia

2009-06-19 Thread Tobias Verbeke

Wensui Liu wrote:


in terms of the richness of features and ability to handle large
data(which is normal in bank), SAS EM should be on top of others.


Should be ? That is not at all my experience.
SAS EM is very much lagging behind current
research. You will find variants of random forests
in R that will not be in SAS for the next 8 years,
to give just one example.


however, it is not cheap.
in terms of algorithm, split procedure in sas em can do
chaid/cart/c4.5, if i remember correctly.


These are techniques of the 80s and 90s
(which proves my point). CART is in rpart and
an implementation of C4.5 can be accessed
through RWeka. For the oldest one (CHAID, 1980),
there might be an implementation soon:

http://r-forge.r-project.org/projects/chaid/

but again there have been quite some improvements
in the last decade as well:

http://cran.r-project.org/web/views/MachineLearning.html

HTH,
Tobias


On Fri, Jun 19, 2009 at 2:35 PM, Carlos J. Gil
Bellostac...@datanalytics.com wrote:

Dear R-helpers,

I had a conversation with a guy working in a business intelligence
department at a major Spanish bank. They rely on recursive partitioning
methods to rank customers according to certain criteria.

They use both SAS EM and Salford Systems' CART. I have used package R
part in the past, but I could not provide any kind of feature comparison
or the like as I have no access to any installation of the first two
proprietary products.

Has anybody experience with them? Is there any public benchmark
available? Is there any very good --although solely technical-- reason
to pay hefty software licences? How would the algorithms implemented in
rpart compare to those in SAS and/or CART?

Best regards,

Carlos J. Gil Bellosta
http://www.datanalytics.com

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Re: [R] Issues getting R to write image files

2009-06-11 Thread Tobias Verbeke

Hi Kenny,


Have spent the last couple of days learning R and shell scripting to do
batch plotting jobs. I have had success getting R to complete a filled
contour plot and output to a file (.jpg or .tiff etc). However, when I try
to do the same thing with the simple plot command the script seems to
execute correctly yet there is no output. Below is my R code: 

file - Sys.getenv(input_file) 
tiff(paste( file, tiff, sep=.)) 
z - read.table(file) 
plot(z, type=l, xlim=range(0.6,2), col = red, plot.title = title(main =
file, xlab = Wavelength (um), ylab = Intensity (arb.)) 


dev.off()

q() 


You need to close the tiff graphics device you opened
using dev.off() before quitting.

HTH,
Tobias

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Re: [R] Analisys in Multidimensional contingency tables

2009-06-10 Thread Tobias Verbeke

Hi José,


Hi everyone, Im trying to make an analysis of multidimensional contingency
tables using R. I' working with the Agresti example where you have the
data from 3 categories. The thing is how can I do the analisys using the
G2 statistics. Somebody can send me an Idea?


Please find below a link to an R companion for Agresti by Laura Thompson

https://home.comcast.net/~lthompson221/Splusdiscrete2.pdf

There are chances you find the example you would like
to reproduce in there.

HTH,
Tobias

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Re: [R] Sweave \Sexpr{} advice please

2009-05-10 Thread Tobias Verbeke

Hi Kyle,


First off, my deepest gratitude to the Sweave developers: this tool has
improved my quality greatly.

A question in my work I use \Sexpr{} statements scalar values and the xtable
package for all manner of tables.  What I'd like to do is to use a vector
inline, rather than a whole separate table.   Something like:

 begin code
% Latex junk

% Sweave block:
=
covmat - cov(matrix(runif(100),ncol=3))
@

% back to Latex, typing up a report, my homework, etc.
The first column of the covariance matrix is $(\Sexpr{covmat[1,1]},
\Sexpr{covmat[2,1]}, \Sexpr{covmat[3,1]})^T$

% end code

but, of course, this is poor way of going about it.  Any suggestions?


loadPkg, echo=FALSE=
  require(xtable)
@

=
covmat - cov(matrix(runif(99), ncol=3)) # 99 not 100
@

The first row of the\dots is
firstRow, echo = FALSE, results=tex=
xtable(covmat[1,,drop=FALSE])
@

This should get you started. Be sure to
explore the facilities of the xtable package
(you can use captions, labels etc.):

?xtable
?print.xtable

The results=tex option to the chunk is
important as well, of course.

HTH,
Tobias

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Re: [R] caching of the .Rprofile file

2009-05-09 Thread Tobias Verbeke

Hi Tom,


It seems that if I make a change to the .Rprofile file in my working
directory, it is not immediately reflected when the session is
restarted. (I am using statET and rJava)

Is that something I should expect?


No.

Is your launch configuration of R in StatET configured
such that it takes ${resource_loc} as working directory
(Main tab of the launch configuration) ?

This way you can select the directory you want as a working
directory in the Project Explorer and launch R directly in
there. If you do not launch R in that way it will take a
default directory and therefore not load the .Rprofile from
the specific directory you want to be the working directory.

HTH,
Tobias

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Re: [R] Vim R plugin-2

2009-05-09 Thread Tobias Verbeke

Hi Jose,

Jose Quesada wrote:

snip


In my view, R as a language is very good but the tools around it are not
good.
When a matlab person tries R, their first comments are always how poor
the environment is.
Sure, one can have a debugger (with a crappy GUI in TK), and there's
some editor support, but it's kind of painful.

Integreting an R debugger with something like pyclewn would be very good.


There's no integrated debugger yet, but the StatET plugin
for Eclipse is one example of a mature development environment
for R. Moreover it allows to leverage the Eclipse eco-system
and its myriad of plug-ins. No painful experience at all
for me..

http://www.walware.de/goto/statet

Best,
Tobias

P.S. When I try Matlab my first comment is always how poor
the language is ;-)

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Re: [R] running R on netbooks/minis?

2009-05-03 Thread Tobias Verbeke

Zeljko Vrba wrote:

On Sun, May 03, 2009 at 03:27:43AM -0500, Erin Hodgess wrote:

Is it possible to run R on a netbook/mini, please?


There should be no reason not to be possible, if the notebook uses an
OS that R supports.


For the eeepc, e.g., documentation has been contributed on the R wiki

http://wiki.r-project.org/rwiki/doku.php?id=getting-started:installation:eeepc

HTH,
Tobias

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Re: [R] Can't install package glmnet

2009-04-25 Thread Tobias Verbeke

Uwe Ligges wrote:



Liang Zhang wrote:

I am just wondering how to solve this installation problem.


As I said, ask your admin to install suitable compilers.


And 'suitable compilers' in this case means to install the
GNU compiler collection gcc 4.x.y.

Contrary to gcc 3.x.y (which only has a Fortran 77 compiler),
gcc 4.x.y has gfortran which is the GNU Fortran 95 compiler.

My guess is that your system currently only has gcc 3.x.y
and no gcc4 and friends.

HTH,
Tobias

P.S. Be sure to also install the appropriate libgfortran.



From: Uwe Ligges lig...@statistik.tu-dortmund.de
To: Liang Zhang zhangl...@yahoo.com
Cc: r-help@r-project.org
Sent: Friday, April 24, 2009 2:50:00 AM
Subject: Re: [R] Can't install package glmnet



Liang Zhang wrote:
Hi, I was trying to install package glmnet in R, but failed and it 
show such messages:


* Installing *source* package glmnet ...
 This package has only been tested with gfortran.
 So some checks are needed.
 R_HOME is /home/username/R/R-2.9.0
Attempting to determine R_ARCH...
R_ARCH is
Attempting to detect how R was configured for Fortran 90
Unsupported Fortran 90 compiler or Fortran 90
compilers unavailable! Stop!
ERROR: configuration failed for package glmnet
* Removing /home/username/R/R-2.9.0/library/glmnet

The downloaded packages are in
/tmp/RtmpwsLWSc/downloaded_packages
Updating HTML index of packages in '.Library'
Warning message:
In install.packages(glmnet) :
  installation of package 'glmnet' had non-zero exit status


It seems that it needs fortran 90 complier. What can I do to solve 
this problem? (I am not the administrator, only a user in the linux 
system).


Ask for a suitable compiler?

Uwe Ligges





Thank you very much!
Liang



  [[alternative HTML version deleted]]

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Re: [R] Problem with apply

2009-04-22 Thread Tobias Verbeke

Marc Schwartz wrote:


The cut() function will do what you want in a vectorized fashion. See ?cut

However, that being said, I would strongly advise that you read Frank's 
page on the categorizing of continuous variables:


  http://biostat.mc.vanderbilt.edu/twiki/bin/view/Main/CatContinuous

before you proceed.


A simple example of how to use it for your problem would be

set.seed(158)
ages - sample(0:100, 50, TRUE)
head(ages)
ageGroups - cut(ages, breaks = c(-1,5,15,30,70,80,150), right = FALSE,
labels = c(0-4, 5-14, 15-29, 30-69, 70-79, 80+))
head(ageGroups)

See ?cut

HTH,
Tobias


On Apr 22, 2009, at 1:56 PM, Alan Cohen wrote:


Hi R users,

I am trying to assign ages to age classes for a large data set 
(123,000 records), and using a for-loop was too slow, so I wrote a 
function and used apply.  However, the function does not properly 
assign the first two classes (the rest are fine).  It appears that 
when age is one digit, it does not get assigned properly.


I tried to provide a small-scale work-up (at the end of the email) but 
it does not reproduce the problem; the best I can do is to provide my 
code and the output below.  As you can see, I've confirmed that age is 
numeric, that all values are integers, and that pieces of the code 
work independently.  Any thoughts would be appreciated.


To add to the mystery, depending which rows of my data set I select, I 
get different problems.  mds[1:100,] gives the problem above, as do 
mds[100:200,] , mds[150:250,] and mds[1:10100,].  However, with 
mds[200:300,], mds[250:350,] and mds[1000:1100,], only ages with 3 
digits are correctly assigned - all ages 100 are returned as NA.


I'm using R v 2.8.1 on Windows XP.

Cheers,
Alan Cohen
Centre for Global Health Research,
Toronto,ON


ageassign - function(x){

+   y - NA
+   if (x[11] %in% c(0:4)) {y - 0-4}
+   else if (x[11] %in% c(5:14)) {y - 5-14 }
+   else if (x[11] %in% c(15:29)) {y - 15-29 }
+   else if (x[11] %in% c(30:69)) {y - 30-69}
+   else if (x[11] %in% c(70:79)) {y - 70-79}
+   else if (x[11] %in% c(80:125)) {y - 80+}
+   return(y)
+ }

jj - apply(mds[1:100,],1,FUN=ageassign)
jj
 1   2   3   4   5   6   7   8   
9  10  11  12  13
NA   80+ 30-69 30-69   80+  NA 30-69 30-69 70-79 
15-29 15-29 30-69 70-79
14  15  16  17  18  19  20  21  
22  23  24  25  26
 80+  NA 30-69 30-69 30-69   80+   80+ 15-29 70-79 
30-69 70-79 70-79 30-69
27  28  29  30  31  32  33  34  
35  36  37  38  39
70-79   80+  NA   80+ 70-79  NA 15-29 15-29  
NA  NA 70-79 30-69 30-69
40  41  42  43  44  45  46  47  
48  49  50  51  52
70-79 30-69 30-69 30-69 70-79 30-69 30-69 70-79 
15-29 30-69  NA 15-29 30-69
53  54  55  56  57  58  59  60  
61  62  63  64  65
30-69  NA 70-79 30-69 30-69 30-69 30-69 15-29 
30-69 30-69 70-79 30-69  NA
66  67  68  69  70  71  72  73  
74  75  76  77  78
30-69 30-69 30-69 30-69 30-69   80+ 30-69   80+ 
70-79 30-69 30-69 30-69  NA
79  80  81  82  83  84  85  86  
87  88  89  90  91
30-69 30-69 30-69  NA   80+ 30-69 30-69 30-69  
NA 15-29 30-69 30-69 30-69

92  93  94  95  96  97  98  99 100
30-69 30-69 30-69 30-69 70-79 30-69 30-69 30-69 30-69

mds[1:100,11]
 [1]  3 82 40 35 82  1 37 57 71 22 21 52 73 86  1 43 60 63 84 88 29 73 
69 75 73 43 75 83  4 83 77  1 27
[34] 15  1  6 76 51 45 71 54 64 69 70 48 38 74 26 37  4 18 63 59  8 78 
63 67 62 50 21 66 69 75 57  4 50
[67] 58 60 61 62 83 69 92 75 30 49 69  1 69 63 69  0 93 64 59 69  2 25 
32 60 66 67 54 53 64 79 59 49 59

[100] 64

table(mds[,11])


  0123456789   10   11   12   13   
14   15   16   17   18   19
3123 6441 3856 2884 1968 1615 1386 1088 1098  721  943  681  511  380  
426  835  571  555  719  653
 20   21   22   23   24   25   26   27   28   29   30   31   32   33   
34   35   36   37   38   39
879  715  672  631  655  773  680  713  769  538  685  566  729  702  
652  766  683  723  821  675
 40   41   42   43   44   45   46   47   48   49   50   51   52   53   
54   55   56   57   58   59
774  650  908  892  784  925  781 1043 1161  924 1087  827 1261 1356 
1297 1272 1277 1614 1831 1523
 60   61   62   63   64   65   66   67   68   69   70   71   72   73   
74   75   76   77   78   79
1702 1251 1954 2157 1901 2090 1874 2705 3085 2529 2488 1777 2701 2586 
2308 2020 1801 2269 2486 1856
 80   81   82   83   84   85   86   87   88   89   90   91   92   93   
94   95   96   97   98   99
1762 1047 1413 1326  967 1013  753  870  884  531  601  277  364  301  
193  288  149  174  169  470

100  101  102  103  104  105  106  107  108  114  115  117  

Re: [R] Neural Networks in R - Query

2009-04-18 Thread Tobias Verbeke

Hi Lars,


I'd like to ask your guidance regarding the following two questions: (i) I
just finished reading Chris Bishop's book Neural Networks for Pattern
Recognition. Although the book gave me good theoretical foundation about
NN, I'm now looking for something more practical regarding architecture
selection strategies. Is there any good reference about best practices for
architecure selection? (ii) Which R package provides a good implementation
of NN?


The CRAN Task View on Machine Learning

http://cran.r-project.org/web/views/MachineLearning.html

opens with the following topical item:

o Neural Networks : Single-hidden-layer neural network are implemented
in package nnet as part of the VR  bundle (shipped with base R).

HTH,
Tobias

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Re: [R] Presenting R Results in Webpages

2009-04-16 Thread Tobias Verbeke

Hi Jason,

I apologize in advance that this question is not specific to R, but I thought some R users may be using this in their work process flow. 

I would like to be able to have a tool (prefer scriptable) that will take two images and some pre-written text and put it on an simple webpage.  


That is, it would look something like the following:

|-|
|Title|
| |
|  ||  || Some basic txt  |
|  | Image1 |  | Image2 | ... |
|  ||  || ... |
|_|

R comes in because I have R scripts creating the images I would like to import.  There will be 14-18 pages of these type of slides, but the key is we will be producing these over and over.  I tried doing something like this in PowerPoint, but not impressed with the linking capability or Macros.  


Thanks for any feedback and again appologize that this is not exactly a 
specific R question.


Would the hwriter package by Gregoire Pau provide a solution?

http://cran.r-project.org/web/packages/hwriter/index.html
http://www.ebi.ac.uk/~gpau/hwriter/

HTH,
Tobias

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Re: [R] Tinn-R pdf()

2009-04-08 Thread Tobias Verbeke

Hi Henning,

thanks for your help, with solved the problem, although i don't why, 
because when using the R editor accessible via the R console i created many 
many lattice plots with the code i posted, i.e. without the print() 
command.


At the command line, R objects (including lattice plots which are
objects) get auto-printed, i.e. the print method is invoked 
automatically on these objects.


This is not the case when you write to a pdf file.

Best,
Tobias


 Original-Nachricht 
Datum: Wed, 8 Apr 2009 12:29:58 +0200
Von: ONKELINX, Thierry thierry.onkel...@inbo.be
An: Henning Wildhagen hwildha...@gmx.de, r-help@r-project.org
Betreff: RE: [R] Tinn-R pdf()

Dear Henning,

You need to print() lattice plots when using a device:
 
library(lattice)


pdf(plot1.pdf)
PLOT-(xyplot, ...)
print(PLOT)
dev.off()

So this is not due to TINN-R.

HTH,

Thierry



ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium 
tel. + 32 54/436 185
thierry.onkel...@inbo.be 
www.inbo.be 


To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-Oorspronkelijk bericht-
Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
Namens Henning Wildhagen
Verzonden: woensdag 8 april 2009 11:25
Aan: r-help@r-project.org
Onderwerp: [R] Tinn-R pdf()

Dear R and Tinn-R users,

i recently switched to Tinn-R and sending code to R works fine (R 2.8.1,

Tinn-R 2.2.0.2, OS Windows XP). However, i encountered a problem when 
trying to send plots to pdf files like this:


library(lattice)

pdf(plot1.pdf)
PLOT-(xyplot, ...)
PLOT
dev.off()

The file plot1.pdf is created, but it is empty.
If i paste the code above directly into the R console and run it, the
file 
plot1.pdf is created and in this case contains PLOT.


I guess that some settings in Tinn-R are wrong, but i have no idea
which. 
Maybe someone has a suggestion?


Thanks,

Henning
--



[[alternative HTML version deleted]]

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Re: [R] Public R servers?

2009-04-01 Thread Tobias Verbeke

Hi Aaron,

Earlier I posted a question about memory usage, and the community's input was very helpful.  However, I'm now extending my dataset (which I use when running a regression using lm).  As a result, I am continuing to run into problems with memory usage, and I believe I need to shift to implementing the analysis on a different system..  


I know that R supports R servers through Rserve. Are there any public servers 
where I could upload my datasets (either as a text file, or through a 
connection to a SQL server), execute the analysis, then download the results?  
I identifed Wessa.net  
(http://www.wessa.net/mrc.wasp?outtype=Browser%20Blue%20-%20Charts%20White), 
but it's not clear it will meet my needs.  Can anyone suggest any other 
resources?


Karim Chine made available Amazon EC2 images with
R and biocep that can be run on the Amazon servers
on a pay per hour basis.

The only requirement is to have an Amazon EC2 account.
There is some explanation on

http://biocep-distrib.r-forge.r-project.org/doc.html

under the heading Biocep-R on Amazon's Cloud

HTH,
Tobias

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Re: [R] help with ggplot2 -- ggpoint function missing?

2009-04-01 Thread Tobias Verbeke

Hi,


I'm trying to follow the ggplot introduction here:
http://had.co.nz/ggplot/ggplot-introduction.pdf

I've installed ggplot2 with install.packages(ggplot2, dep=T)
but when I try to run
print(ggpoint(p, list(colour = sex)))
I get an error:
Error in print(ggpoint(p, list(colour = sex))) : 
  could not find function ggpoint


What is the problem? Has the function been renamed in the ggplot - ggplot2
transition?


ggplot2 has seen many improvements and still is under active
development. Rather than find out what ggpoint was about
and what happened to it, you might want to discover the
current version using the following book as an introduction:

http://had.co.nz/ggplot2/book/

There also is a targeted e-mail list whose archives
may be instructive

http://groups.google.com/group/ggplot2

HTH,
Tobias

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Re: [R] oggetto gstat

2009-03-21 Thread Tobias Verbeke

Hi Giuseppe,

The language of this mailing list is English.

Ciao a tutti ho appena iniziato ad utilizzare R per ora per attuare un'analisi 
geostatistica di dati. Volevo sapere come poter creare un oggetto gstat 
partendo da un file testo(che ho gia importato con read.table)e che contiene  3 
colonne: x,y,value. Mi servirebbe far questo per costruire un variogramma. So 
che la domanda molto probabilmente per voi sara' banalevi ringrazio 
comunque, Giuseppe


The details of how to create a gstat object are given
in the help page of gstat that you can read after
typing in the following commands:

library(gstat)
?gstat

It apparently contains an example as well on how
to create and plot a variogram.

HTH,
Tobias

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Re: [R] Extract statistics from lm()

2009-02-28 Thread Tobias Verbeke

Hi,


Hi, perhaps this question was answered previously however I could not find
them. My problem is how how to extract a particular statistic from the
result given by lm(). For e.g.

ctl - c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt - c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group - gl(2,10,20, labels=c(Ctl,Trt))
weight - c(ctl, trt)

summary(lm.D9 - lm(weight ~ group))


Call:
lm(formula = weight ~ group)

Residuals:
Min  1Q  Median  3Q Max 
-1.0710 -0.4938  0.0685  0.2462  1.3690 


Coefficients:
Estimate Std. Error t value Pr(|t|)
(Intercept)   5.0320 0.2202  22.850 9.55e-15 ***
groupTrt -0.3710 0.3114  -1.1910.249
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 


Residual standard error: 0.6964 on 18 degrees of freedom
Multiple R-squared: 0.07308,Adjusted R-squared: 0.02158 
F-statistic: 1.419 on 1 and 18 DF,  p-value: 0.249 



Here I want to extract the values of t-stat, Pr(|t|) individually. Can
anyone please guide me how to get them?


summaryD9 - summary(lm.D9 - lm(weight ~ group))
(coefD9 - coef(summaryD9))
coefD9[, t value]
coefD9[, Pr(|t|)]

In order to get an overview of the structure of an object
you can use the str function as in:

str(summaryD9)

HTH,
Tobias

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Re: [R] How to connect R and WinBUGS/OpenBUGS/LinBUGS in Linux in Feb. 2009

2009-02-18 Thread Tobias Verbeke

Uwe Ligges wrote:


Hi all,
I've managed to get JAGS working on my Ubuntu Hardy Linux with a 32-bit
computer and AMD processors using R 2.8.1.  JAGS is great.  I've read 
that

JAGS is the fastest, but that hasn't been my experience.  At any rate, I
have more experience with WinBUGS under Windows and would like a 
version of

that working as well.

It seems like I've read a lot on the subject and tried a lot, but haven't
managed to get BUGS to work yet.  The most success I've had is to install
WinBUGS or OpenBUGS using this method:
http://www.math.aau.dk/~slb/kurser/bayes-08/install.html

What you also need to know is that you need to open Wine and add a 
drive. Although Z is recommended, I haven't been able to specify it, 
but have

gotten a D drive to work, using:

wine D:/opt/OpenBUGS/winbugs.exe

Using this method, OpenBUGS opens.  Now, to be able to open it with 
R.  I've
read all sorts of discussions about BRugs (which is no longer on CRAN, 
but

old versions can still be found), rbugs, and R2WinBUGS (which I'm used to
using on Windows with WinBUGS).  Some people say R2WinBUGS cannot run
OpenBUGS on Linux, some claim they've done it (I think).  It seems the 
same

thing with everything else.  I've tried making the linbugs and cbugs file
recommended elsewhere online.  It's all very confusing.


For short: It is quite unlikely that BRugs / OpenBUGS (which is called 
LinBUGS under Linux) works natively under your Linux (although it might 
work under very specific settings). 


As every now and then I get offline requests from people who stumble on 
this thread


http://finzi.psych.upenn.edu/R/Rhelp08/archive/132855.html

to give details on how I got OpenBUGS running under GNU/Linux,
I made a stripped-down package that does just that. The approach is 
very, very basic and I only tested this on a few machines and

distributions, but if it can be useful to anyone, I temporarily
put it up at

http://www.openanalytics.be/rOpenBUGS_0.0-1.tar.gz

Best,
Tobias

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Re: [R] twitter useRs?

2009-02-10 Thread Tobias Verbeke

Hi José,


I wonder if there are any useRs sharing day-to-day realizations/tricks
on twitter...
Seems like a good place for those things that are good findings, but
one is too lazy to blog about them...


I don't twitter, but I wrote an R package
to read and write tweets from the R command
line for twitter and laconi.ca.

I will submit it soon, but if anyone is interested
contact me off-list.

Best,
Tobias

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Re: [R] Next-generation sequencing data analysis with R

2009-02-09 Thread Tobias Verbeke

Hi Frank,


Hello, everyone!
I have a set of proteomic data .And I do a solexa sequencing in the 
corresponding sample. So I get much mass sequencing data. How can I using R to 
integrate those two set data. I wonder if some tool or R package would help me?


You are more likely to receive a reply on the BioConductor mailing list. 
BioConductor is an R based platform specifically targeted at the 
analysis of omic data.


http://www.bioconductor.org

There also is a special interest group related to the
BioConductor efforts in the area of these novel
high-througput sequencing technologies. Their mailing list can be found at

https://stat.ethz.ch/mailman/listinfo/bioc-sig-sequencing

HTH,
Tobias

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Re: [R] updating contents of a package

2009-02-08 Thread Tobias Verbeke

Hi Markus,


I read through the Writing R Extensions document and am able to now create
my own packages/libraries which so far are just well documented collections
of my own R functions. I use package.skeleton() and the tools package to
build these packages.
However, it is not clear to me how to modify and update a package after its
initial creation. How do you elegantly update e.g. the old help file when
one added an argument to a function ? How do you keep most of the existing
package structure when implementing incremental changes ?


Generally speaking you will have your package in a directory we will 
call PKG_ROOT here, with (more or less) the following structure


PKG_ROOT
  `- inst
  `- man
  `- R
  `- DESCRIPTION
  `- NAMESPACE


If you want to update the package, you edit the help files, the R files,
etc. in their respective folders and when you're finished you can build, 
check and/or install the package using


R CMD build PKG_ROOT
R CMD check PKG_ROOT
R CMD INSTALL PKG_ROOT

or what is appropriate for your platform. To build
a Windows binary package, e.g. you will need

R CMD INSTALL --build PKG_ROOT

For this to work you will need R to work from
the commandline (add it to your PATH). On Windows
you also need to have installed the R
Windows Toolset provided by Duncan Murdoch at

http://www.murdoch-sutherland.com/Rtools/

If you would like to keep track of the changes
from package version to package version, you
can maintain a NEWS or ChangeLog file in the
inst/ package directory.

HTH,
Tobias

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Re: [R] Problems in Recommending R

2009-02-02 Thread Tobias Verbeke

friedrich.lei...@stat.uni-muenchen.de wrote:


On Mon, 2 Feb 2009 18:14:03 +0530,
Ajay ohri (Ao) wrote:


   Plain HTML coding is simple enough for this list ( I think)...but aesthetic
   designhmm

In most cases one can do more than most think using HTML and CSS: Our
universities corporate design was done by professionals and is backed
by a CMS:

  http://www.uni-muenchen.de

Our dpertment didn't want to use the CMS, so we emulated it using
HTML, CSS and iframes:

  http://www.stat.uni-muenchen.de/

which is *much* more convenient to maintain for us: I have a copy of
my page on my laptop, I can work on it while offline on a train, etc.

I don't want to discuss whether the above examples are aesthetic or
not (we are required to follow the coporate design, so have no
choice). The main point I want to make is: that everything is static
HTML makes life very easy for command line junkies like me ;-)


Apart from making life easy for command line junkies,
plain HTML is also very search engine friendly.

Best,
Tobias

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Re: [R] Test Driven Development in R

2009-01-31 Thread Tobias Verbeke

Jose Quesada wrote:


Hi,
I wonder what kind of interest there is on Test Driven Development (TDD) 
in R.


Test Driven Development consists of writing the test before the 
function, and iteratively build the function until it passes the test.


Python and Ruby (specially Ruby) have very strong test-oriented 
cultures. In fact, in Ruby at least the custom is to do TDD and lately 
Behavior-driven development (BDD). In BDD, one writes a story of what 
one would want the code to do. This story is almost native English, and 
then the test suite converts it into something that the language 
understand as tests.


There are some posts on the list about this, but they are about testing 
in general (Runit), not TDD. Example:

http://thread.gmane.org/gmane.comp.lang.r.general/85047

Recently, I found there is an alpha, but working implementation of TDD 
for Komodo edit:

www.sciviews.org/SciViews-K/index.html

The editor has a green bar that becomes red as soon as one edits a 
function, and that edit breaks the tests. This is tremendously useful.


Using Gmane search, the only mention I could find on svUnit was:
http://thread.gmane.org/gmane.comp.lang.r.general/136632/focus=136662

I think this could make a great UseR 2009 talk. Ideally, by someone with 
more R experience than me, and even more ideally by Philippe Grosjean 
:), but it push comes to shove, I could prepare such a talk.


Would this be interesting at all? Are there any resources that I have 
missed? 


There is the RUnit package which is a mature xUnit implementation for R.

I don't know of a tight integration into an editor (apart from
that it is _planned_ for StatET, the Eclipse R plug-in), but
as such it is very useful already.

http://cran.r-project.org/web/packages/RUnit/index.html

HTH,
Tobias

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Re: [R] Can't load Rgraphviz on windows-based R

2008-12-02 Thread Tobias Verbeke

L.S.,


I am facing the same problem. I followed the all instructions given in help 
file and some steps of previous discussion (from google search) but I could not 
install package Rgraphiviz in windows.  I tried even the instructions given to 
install Bioconductor package then only able to install in Linux systems but not 
in Windows. In my opinion, Graphiviz package which creating problems in 
installation of Rgraphiviz packageis, is doing something wrong or needs some 
special requirements .
 
If some body have idea regarding this problem, I am also enthusiastic to see the solution.

Pls, if you find solution, let me know.


I installed it (without problems) on someone's Windows PC yesterday.
The recipe:

1) download and install the Windows installer for graphviz

http://www.graphviz.org/pub/graphviz/stable/windows/graphviz-2.20.3.msi

2) add the path to the graphviz binaries to your PATH environment variable

  o in the Control Panel right click on System - Properties - Advanced
- Environment Variables
  o edit PATH and add the path to the binaries (ends in ...\bin)

3) install the Rgraphviz package from BioConductor

HTH,
Tobias


--- On Tue, 12/2/08, Prof Brian Ripley [EMAIL PROTECTED] wrote:

From: Prof Brian Ripley [EMAIL PROTECTED]
Subject: Re: [R] Can't load Rgraphviz on windows-based R
To: Daren Tan [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Date: Tuesday, December 2, 2008, 1:47 AM

Rgraphviz is a Bioconductor package, so please ask on the apporpriate 
mailing list (see the posting guide).


On Tue, 2 Dec 2008, Daren Tan wrote:


Hi,

I have problem loading Rgraphviz. Following the instructions specified by

the README in Rgraphviz_1.20.3.tar.gz didn't help either.

o. set the following Windows environment variables accordingly
  (control panel - systems - Advanced - Environment Variables

):

  (a) create new user variables:
GRAPHVIZ_INSTALL_DIR   (e.g., C:\Graphviz-2.21)

-- I stated C:\Graphviz-2.21 (I also tried
C:\/Graphviz-2.21)
GRAPHVIZ_INSTALL_MAJOR (e.g., 2)   

-- I stated 2
GRAPHVIZ_INSTALL_MINOR (e.g., 20)  

-- I stated 21

Notice the way \/ are used for the paths above.
  (b) add to user variable 'path': $GRAPHVIZ_INSTALL_DIR/bin
e.g., C:\Graphviz-2.21\bin 

-- I stated C:\Graphviz-2.21\bin (I also
tried C:\/Graphviz-2.21\/bin)

It should be 'PATH', not 'path': environment variables are
case-sensitive 
(in general, not sure what happens with PATH if set there).



library(Rgraphviz)

Error in inDL(x, as.logical(local), as.logical(now), ...) :
 unable to load shared library

'D:/PROGRA~1/R/R-28~1.0/library/Rgraphviz/libs/Rgraphviz.dll':

 LoadLibrary failure:  The specified module could not be found.


That does not mean Rgraphviz.dll: it means a dependent DLL.  You did 
actually install graphviz, I presume?



In addition: Warning messages:
1: closing unused connection 4

(D:/PROGRA~1/R/R-28~1.0/library/Rgraphviz/libs/Rgraphviz.dll)

2: closing unused connection 3

(D:/PROGRA~1/R/R-2.8.0/library/Rgraphviz/libs/Rgraphviz.dll)

Error : .onLoad failed in 'loadNamespace' for 'Rgraphviz'
Error: package/namespace load failed for 'Rgraphviz'


file.exists(D:/PROGRA~1/R/R-28~1.0/library/Rgraphviz/libs/Rgraphviz.dll)

[1] TRUE


sessionInfo()

R version 2.8.0 (2008-10-20)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United

States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] grid  stats graphics  grDevices utils datasets  methods  

base

other attached packages:
[1] graph_1.20.0
loaded via a namespace (and not attached):
[1] cluster_1.11.11 tools_2.8.0

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Re: [R] R and SPSS

2008-11-27 Thread Tobias Verbeke
There exists a R plug-in for SPSS. You can find it on the SPSS website.

... and there is a page on the R wiki:

http://wiki.r-project.org/rwiki/doku.php?id=tips:callingr:spss

HTH,
Tobias

   
 I have a code in R. Could anyone give me the best possible way (or just
 ways!) to integrate it in SPSS?

 
 I would doubt you could do this, but for the least provide commented,
 minimal, self-contained, reproducible code. It would help if you were
 more specific.
 Liviu




   

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Re: [R] eclipse and R

2008-11-26 Thread Tobias Verbeke
Hi Ruud, 

I forwarded your message to the StatET (R in Eclipse) list;
there might be StatET users with a similar setup as yours
on that list (and the StatET developer is more likely to 
pick up your question there).

Best,
Tobias

Hello, I am trying to install Eclipse and R on an amd64 machine running 
Suse linux 9.3. I have compiled R 2.8.0 with --enable-R-shlib and it 
seems that compilation was successfull. After starting R, I installed 
the latest rJava package, from the output:
checking whether JRI is requested... yes
cp src/libjri.so libjri.so
It seems JRI support has been compiled successfully. However, when I try 
to open R from within Eclipse, I receive an error message:

Launching the R Console was cancelled, because it seems starting the 
Java process/R engine failed.
Please make sure that R package 'rJava' with JRI is installed.

I can open an R console from the command line, and attach the rJava 
library without problems. What am I doing wrong here?
Thanks, Ruud

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Re: [R] SAS - surveyselect in R?

2008-10-29 Thread Tobias Verbeke

Hi Markus,


is there a R function or package containing a similar functionality then
the SAS PROC SURVEYSELECT?


I think you need the sampling package

http://cran.r-project.org/web/packages/sampling/index.html

It is a package accompanying the book

Tillé, Y. (2006). Sampling Algorithms, New York: Springer.

Kind regards,
Tobias

P.S. for the analysis itself, your best choice is the
survey package by Thomas Lumley:

http://cran.r-project.org/web/packages/survey/index.html




Thanks
Markus

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Re: [R] TINN-R's R Explores - Available for other editors?

2008-10-21 Thread Tobias Verbeke

Hi Stefan,


I am using TINN-R for working with R and for that purpose it is a very
handy editor, in particular the R-Explorer that shows the existing
objects and their properties is worth money.
But I want to move to a more flexible editor (in particular for Latex)
and was thinking of WinEdt (or maybe Eclipse, because of Java). I know
they have capabilities to work directly with R, but has any other
editor the same capabilities when it comes down to the R-Explorer?


StatET (the Eclipse plug-in for R) has very good Sweave support:
- Sweave document templates
- content assist for creating new code chunks (with templates)
- the basic behaviour of the R-script editor
  inside code chunks (highlighting, submit to console etc.)
- possibility to define several document building configurations
  (and actions [buttons/keyboard shortcuts] that build the document
   and open it in a viewer in one go)

There currently is no object explorer yet in StatET. Something very
interesting, though, is the Outline View for R scripts which shows
in an outline what packages are loaded, what classes, methods and
functions defined etc. One could consider this to be a
The-Source-is-Real-equivalent of an object-browser...

Kind regards,
Tobias

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Re: [R] plot - central limit theorem

2008-10-15 Thread Tobias Verbeke

Hi Joerg,

Is there a way to simulate a population with R and pull out m samples, 
each with n values

for calculating m means?

I need that kind of data to plot a graphic, demonstrating the central 
limit theorem

and I don't know how to begin.

So, perhaps someone can give me some tips and hints how to start and 
which functions to use.


Have a look at

library(TeachingDemos)
?clt.examp

HTH,
Tobias

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Re: [R] Automatic code diagramming for R?

2008-10-07 Thread Tobias Verbeke

Ben Bryant wrote:


Greetings -

Is anyone aware of an automatic code diagrammer/flow chart creator that
works for the R language (either a contributed package, or external
software)?  I need to explain some code structure of a package I'm working
on to non-R users, and would find it extremely helpful to have such a
program similar to, for example, Visustin (
http://www.aivosto.com/visustin.html ).  I can do it by hand (possibly
with the help of the 'diagram' package) but it seems like automated
capabilities for recognizing nested structures and argument-passing would be
of good general use to package developers.


When you document your package using Roxygen,
you can generate callgraphs (using the @callGraph
and/or @callGraphPrimitives tags).

The roxygen package homepage can be found at

http://roxygen.org/

and the vignette has an example of a call graph
(and how to generate it).

HTH,
Tobias


Much appreciated,
-Ben Bryant

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Re: [R] best material for programmers?

2008-09-28 Thread Tobias Verbeke

Barry Rowlingson wrote:

2008/9/28 June Kim [EMAIL PROTECTED]:

Hello,

What is the best material(book, pdfs, ...) for programmers, who have
extensive experience in other programming languages, to learn R
programming? I think there are many materials on how to use R for
specific statistical jobs, but I haven't seen any material
particularly designed for R programming.


snip


 I think possibly the most stats-free reference is Chambers'
Programming with Data. Get a copy of that...


I would rather get the more recent

Software for Data Analysis. Programming with R by John Chambers:

http://www.springer.com/statistics/computational/book/978-0-387-75935-7

or

R Programming for Bioinformatics by Robert Gentleman:

http://www.crcpress.com/shopping_cart/products/product_detail.asp?sku=C6367isbn=9781420063677parent_id=pc=

HTH,
Tobias

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Re: [R] Dream of a wiki GUI for R

2008-09-28 Thread Tobias Verbeke

Hi,


I am just writing a draft to introduce confidence intervals of various
effect sizes to my students. Surely, I'll recommend the package
MBESS in R. Currently, it means I have to recommend R's interface at
first. As a statistics teacher in a dept of psychology, I often have
to reply why not to teach SPSS. Psychologists and their students hate
to memorize codes, or even to call any function with a list of
parameters. I know if I have an online R platform with a wiki
html-form design, I can bypass the function calls and headache
parameters to expose the power of R. Rcmdr and its plugins help some,
but students like to remember just one menu structure in the SPSS
textbook. A wiki interface means they can search and find a complete
example in psychology, with self-explained parameter inputs and
outputs.

Do I actually dream a wikipedia with front forms and back R? Most R
fans are wiki fans, but not vice verse. So, I think I should talk my
dream here rather than at wikipedia. If you know it had been a
practice rather than an idea, please tell me where to write my
teaching interface.


Some have had similar dreams:

http://ideas.repec.org/p/hum/wpaper/sfb649dp2008-030.html
http://www.r-project.org/user-2006/Slides/Klinke.pdf
http://www.r-project.org/user-2006/Abstracts/Klinke+Schmerbach+Troitschanskaia.pdf 



HTH,
Tobias


LI, Xiaoxu

School of Arts and Social Sciences,
Shenzhen Graduate School,
Peking Univ.(Shenzhen Campus)
China

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Re: [R] Two way clustering

2008-09-11 Thread Tobias Verbeke

Hi,

I am trying to do two-way clustering (using information of both observation and variables). Is there any package available in R. 


There is a package for biclustering in development on R-Forge

http://r-forge.r-project.org/projects/biclust/

Slides from a recent presentation of the package at useR!2008
can be found at

http://www.statistik.uni-dortmund.de/useR-2008//slides/Kaiser+Leisch.pdf


Another querry, if somebody can provide related information (website) regarding 
this statistics, it will be great.


You can find a nice review by Iven Van Mechelen et al. at

http://ppw.kuleuven.be/okp/_pdf/VanMechelen2004TMCMA.pdf

HTH,
Tobias

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Re: [R] Genmod in SAS vs. glm in R

2008-09-10 Thread Tobias Verbeke

Ajay ohri wrote:

Whats the R equivalent for Proc logistic in SAS ? 


glm with the appropriate family (binomial) and link, I guess.

There is a book 'R for SAS and SPSS users' forthcoming

http://www.springer.com/statistics/computational/book/978-0-387-09417-5


Is there a stepwise
method there ?


See

library(MASS)
?stepAIC

for an example; the following might provide a useful read
on stepwise methods:

http://www.pitt.edu/~wpilib/statfaq/regrfaq.html


How to create scoring models in R , for larger datasets (200 mb), Is
there a way to compress and use datasets (like options compress=yes;)


Fit the model using glm and 'score' using the predict method.
200 Mb isn't that large anymore, but see Thomas Lumley's biglm
package for a bounded-memory version if you're working on
limited hardware.

HTH,
Tobias


On Wed, Sep 10, 2008 at 11:12 AM, Peter Dalgaard
[EMAIL PROTECTED] wrote:

Rolf Turner wrote:

For one thing your call to glm() is wrong --- didn't you notice the
warning messages about ``non-integer #successes in a binomial glm!''?

You need to do either:

glm(r/k ~ x, family=binomial(link='cloglog'), data=bin_data,
offset=log(y), weights=k)

or:

glm(cbind(r,k-r) ~ x, family=binomial(link='cloglog'), data=bin_data,
offset=log(y))

You get the same answer with either, but this answer still does not agree
with your
SAS results.  Perhaps you have an error in your SAS syntax as well.  I
wouldn't know.

The data created in the data step are not those used in the analysis.
Changing to

data nelson;
etc

gives the same result as  R on the versions I have available:

Analysis Of Parameter
Estimates

   Standard Wald 95%
Confidence   Chi-
ParameterDFEstimate   Error   Limits
   SquarePr  ChiSq

Intercept 1 -3.5866  2.2413 -7.9795
 0.8064   2.560.1096
x 1  0.9544  2.8362 -4.6046
 6.5133   0.110.7365
Scale 0  1.  0.  1.
 1.

and
Call:
glm(formula = r/k ~ x, family = binomial(link = cloglog), data = bin_data,
  weights = k, offset = log(y))

Deviance Residuals: 1234  0.5407  -0.9448
 -1.0727   0.7585
Coefficients:
  Estimate Std. Error z value Pr(|z|)
(Intercept)  -3.5866 2.2413  -1.6000.110
x 0.9544 2.8362   0.3360.736



   cheers,

   Rolf Turner

   On 10/09/2008, at 10:37 AM, sandsky wrote:


Hello,

I have different results from these two softwares for a simple binomial
GLM
problem.

From Genmod in SAS: LogLikelihood=-4.75, coeff(intercept)=-3.59,

coeff(x)=0.95

From glm in R: LogLikelihood=-0.94, coeff(intercept)=-3.99,
coeff(x)=1.36

Is there anyone tell me what I did wrong?

Here are the code and results,

1) SAS Genmod:

% r: # of failure
% k: size of a risk set

data bin_data;
input r k y x;
os=log(y);
cards;
1350.5
0250.5
0241.0
1241.0
;
proc genmod data=nelson;
   model r/k = x / dist = binomial link =cloglog   offset = os ;

Results from SAS

   Log Likelihood   -4.7514

   ParameterDFEstimate   Error   Limits
SquarePr  ChiSq

   Intercept 1 -3.6652  1.9875 -7.5605  0.2302
3.400.0652
   x1  0.8926  2.4900 -3.9877  5.7728
0.130.7200
   Scale  0  1.  0.  1.  1.



2) glm in R

bin_data -

data.frame(cbind(y=c(5,5,4,4),r=c(1,0,0,1),k=c(3,2,2,2),x=c(0.5,0.5,1.0,1.0)))
glm(r/k ~ x, family=binomial(link='cloglog'), data=bin_data,
offset=log(y))

Results from R
   Coefficients:
   (Intercept)x
   -3.9911.358

   'log Lik.' -0.9400073 (df=2)

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Re: [R] non-negative least squares

2008-09-08 Thread Tobias Verbeke

Terry Therneau wrote:


 I have a problem whose solution requires non-negative least squares.  That is
minimize sum(y - Xbeta)^2   subject to beta =0

Splus has the nnls.fit command.  Is there an R alternative?


There is a package nnls on CRAN by Kate Mullen and Ivo van Stokkum:

http://cran.r-project.org/web/packages/nnls/index.html

HTH,
Tobias

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Re: [R] Quantitative risk analysis with R

2008-08-28 Thread Tobias Verbeke

Dear Graham,


Recently a course with this title, from Vose consulting, was announced
on the list. Does anyone know of  any books/websites/downloadable
tutorials etc that cover the same ground.


There is an R package QRMlib on CRAN

http://cran.r-project.org/web/packages/QRMlib/index.html

that accompanies the book Quantitative Risk Management: Concepts, 
Techniques and Tools by Alexander J. McNeil, Rüdiger Frey and Paul Embrechts


http://www.ma.hw.ac.uk/~mcneil/book/index.html

HTH,
Tobias


ie not just quantitative risk analysis, but specifically on using R
for risk analysis and as an alternative to @Risk/Crystal Ball.

Many thanks,

Graham

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Re: [R] Point-biserial correlation

2008-07-23 Thread Tobias Verbeke

Angelo Scozzarella wrote:


what the command for the point-biserial correlation?


Have a look at the polycor package by John Fox.

http://cran.r-project.org/web/packages/polycor/index.html

HTH,
Tobias

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Re: [R] CART Analysis

2008-07-21 Thread Tobias Verbeke

Darin Brooks wrote:

Good evening
 
Does R have an extension/add-on package that assists in Classification and

Regression Tree analysis?


Yes. Abundantly. Have a look under `Recursive Partitioning'
in the following Task View:

http://cran.r-project.org/web/views/MachineLearning.html

HTH,
Tobias




Checked by AVG. 


12:59 PM
 


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Re: [R] childNames for xaxis grob (grid package)

2008-07-10 Thread Tobias Verbeke

Hi Paul,


Can someone explain why the childNames below
gives

character(0)

instead of the (canonical) names of the children grobs
of the xaxis gTree ?

[1] major  ticks  labels



The problem is that you xaxis has an 'at' component of NULL, which means
that the axis calculates its tick marks on-the-fly when it comes time to
draw (it has to ask the current viewport what the current scale is).

This means that there are no grobs representing the major, ticks, and
labels stored with the xaxis grob on the display list.  These are
generated just to draw then thrown away.

If you want to modify the look of the grobs that are drawn (then thrown
away), you can use the 'edits' component of the xaxis.  This provides an
edit that will be applied whenever the children are created for drawing.

Simple example (assuming your code below has been run) ...

 grid.edit(xa, edits=gEdit(labels, rot=45))


Thank you very much for the detailed explanation. I was trying
to find the grid equivalent of the following base graphics code

atPositions - axis(2, labels = FALSE)
axis(2, at = atPositions, labels = 10^atPositions)

i.e. use the 'at' to make appropriate labels. I guess there is
no way to do this without passing a (self-made) 'at' to grid.xaxis
in the first place as in

library(grid)
pushViewport(plotViewport(c(5,4,4,2)))
set.seed(120)
xData - rpois(5, 12)
yData - rpois(5, 12)
pushViewport(dataViewport(xData, yData))
grid.points(xData, yData)
atPositions - grid.pretty(current.viewport()$xscale)
grid.xaxis(name = xa, at = atPositions, label = 10^atPositions)

Thanks again,
Tobias

P.S. Maybe the above could be used to populate the
\examples{} section of grid.pretty ?


### minimal example code ###

library(grid)
pushViewport(plotViewport(c(5,4,4,2)))
pushViewport(dataViewport(1:5, 1:5))
grid.points(1:5, 1:5)
grid.xaxis(name = xa)
grid.get(xa)
childNames(grid.get(xa))


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Re: [R] Sorting / editing a table

2008-07-10 Thread Tobias Verbeke

Jörg Groß wrote:


I have a problem sorting a table;

When I read a table into R by x - read.table() I get something like this:

V1V2V3
yes13
no26
yes39
no412

Now I want to generate a vector of V2.
But R should only put in the numbers of V2 into the new vector when 
there is the entry yes in V1.


x - data.frame(V1 = factor(c(yes, no, yes, no)), V2 = 1:4)
# vector as result
newVector - x$V2[x$V1 == yes]
newVector
# subsetting a data.frame
newX - subset(x, V1 == yes)
newX

HTH,
Tobias

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[R] childNames for xaxis grob (grid package)

2008-07-09 Thread Tobias Verbeke

Dear list,

Can someone explain why the childNames below
gives

character(0)

instead of the (canonical) names of the children grobs
of the xaxis gTree ?

[1] major  ticks  labels

Many thanks in advance,
Tobias

### minimal example code ###

library(grid)
pushViewport(plotViewport(c(5,4,4,2)))
pushViewport(dataViewport(1:5, 1:5))
grid.points(1:5, 1:5)
grid.xaxis(name = xa)
grid.get(xa)
childNames(grid.get(xa))

### sessionInfo() ###

 sessionInfo()
R version 2.7.1 (2008-06-23)
i486-pc-linux-gnu

locale:
en_US.UTF-8

attached base packages:
[1] grid  stats graphics  grDevices utils datasets  methods
[8] base

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Re: [R] Find the closest value in a list or matrix

2008-07-09 Thread Tobias Verbeke

Daniel Malter wrote:


x=c(1:100)
your.number=5.43
which(abs(x-your.number)==min(abs(x-your.number)))


or [depending on the problem]:

which.min(abs(x-your.number))

HTH,
Tobias



-
cuncta stricte discussurus
-

-Ursprüngliche Nachricht-
Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im
Auftrag von R_Learner
Gesendet: Wednesday, July 09, 2008 11:28 AM
An: r-help@r-project.org
Betreff: [R] Find the closest value in a list or matrix


I have a long list of numbers [3.4,5.4,3.67,], and I basically want to
find the index of the number closest to this number that I have, let's say
5.43. How would I do this without writing a for loop (I have to do this many
times for several lists)? Is there a lookup function in R? 


Thanks!
--
View this message in context:
http://www.nabble.com/Find-the-closest-value-in-a-list-or-matrix-tp18363290p
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Re: [R] Survey questions

2008-07-08 Thread Tobias Verbeke

Farley, Robert wrote:


I found and loaded the survey package.  ?rake and ?postStratify seem
promising.  Are there other packages/procedures I've missed?  Are there
online references that an R newbie could use to feel comfortable
applying these procedures to a survey?  How about a reference discussing
the details of designing a post survey survey to generate additional
weights?


There is quite some material on the package homepage at

http://faculty.washington.edu/tlumley/survey/

including a page on post-stratification and calibration

http://faculty.washington.edu/tlumley/survey/example-poststrat.html

Maybe the exemplars of the PEAS project are helpful as well:

http://www2.napier.ac.uk/depts/fhls/peas/about.asp

HTH,
Tobias



 

 


Thanks in advance,

 

 

 


Robert Farley

Metro

www.Metro.net 

 




From: Farley, Robert 
Sent: Thursday, June 26, 2008 15:48

To: 'r-help@r-project.org'
Subject: Survey questions



First the R question.  I have the results of a rather large survey
(thousands of forms, each with dozens of questions) with some existing
weights and expansion factors.  I wish to add additional weighting
factors, based on new information that elements of certain variables
should appear in certain proportions.  Where should I look in R to
develop what is essentially an N-dimensional balancing process.  I'd
like to develop new weighting factors, without disturbing the existing
weightings/expansion.  






Now the statistics question.  Is this appropriate?  Where can I find a
nearly entry level discussion of the statistical ramifications of this?
Is it possible (proper) to re-survey a population to obtain new weights
(for previously un-weighted responses) for an original survey?  




  




Thanks in advance,  












Robert Farley

Metro

1 Gateway Plaza

Mail Stop 99-23-7

Los Angeles, CA 90012-2952

Voice: (213)922-2532

Fax:(213)922-2868

www.Metro.net 







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