http://rwiki.sciviews.org/ 2012-05-11T17:17:52+01:00 http://rwiki.sciviews.org/ http://rwiki.sciviews.org/lib/images/favicon.ico text/html 2012-05-11T17:15:09+01:00 Toby Dylan Hocking (toby.hocking@inria.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012&do=diff1336749309 This wiki page will be the central hub of information about the R Project participation in the Google Summer of Code (GSoC) for 2012. Administrators are Toby Dylan Hocking, John C. Nash, with Brian Peterson and Virgilio Gomez Rubio as a backup. Ques... text/html 2012-05-06T02:58:28+01:00 Matthew Dowle (mdowle@mdowle.plus.com) http://rwiki.sciviews.org/doku.php?id=packages:cran:data.table&do=diff1336265908 Please feel free to add and edit! Hints and Tips Do's and Don'ts 1. Don't subset .SD, use the columns directly or use .SDcols > n=10000 > DT = data.table(grp=1:n,name=as.character(as.hexmode(1:n)),x=rnorm(10*n&#4... text/html 2012-05-03T23:37:11+01:00 Christopher Yeleighton (giecrilj@stegny.2a.pl) http://rwiki.sciviews.org/doku.php?id=rdoc:stats:anova&do=diff1336081031 Res.Df Degrees of freedom for residuals. RSS Sum of squares for residuals. Df Degrees of freedom for the added variable. Sum of Sq How RSS diminished because of adding the variable. F The mean SS divided by the mean RSS; larger values indicate... text/html 2012-05-03T20:35:24+01:00 Christopher Yeleighton (giecrilj@stegny.2a.pl) http://rwiki.sciviews.org/doku.php?id=rdoc:stats:summary.aov&do=diff1336070124 == Rwiki file not found! ==... text/html 2012-04-14T02:32:02+01:00 Carlos Lesmes (carloslesmes@gmail.com) http://rwiki.sciviews.org/doku.php?id=rugs:r_user_groups&do=diff1334363522 A number of R user groups have been formed. This page is intended to assist interested R users to find groups or communicate their activities. By country alphabetically, then alphabetic order of location please! AUSTRALIA Canberra R Users Group... text/html 2012-04-12T19:45:00+01:00 J C Nash (nashjc@uottawa.ca) http://rwiki.sciviews.org/doku.php?id=developers:projects:projects&do=diff1334252700 Discuss here (future) projects that are not mature enough to get a definitive location (R-Forge, ...) or name. This is also the section to use for writing proposals, like for the Google Summer of Code 2012 and Google Code-In 2011. NOTE This is a go... text/html 2012-04-10T22:51:44+01:00 Brian G. Peterson (brian@braverock.com) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:student&do=diff1334091104 Sign up for the following mailing lists: Students + Mentors mailing list Optional: General GSoC discussion mailing list Melange Google organizes the GSoC in Melange. You need to Have a google account Register as student at melange Apply to... text/html 2012-04-10T14:31:11+01:00 Petr Savicky (savicky@cs.cas.cz) http://rwiki.sciviews.org/doku.php?id=misc:r_accuracy&do=diff1334061071 Real numbers in R are stored in double precision, which means that 53 bit floating point arithmetic in base 2 is used. This may be seen from 1 + 2^-52 == 1 # [1] FALSE 1 + 2^-53 == 1 # [1] TRUE The number 1 + 2^-52 with a 53 bit mantissa is exactl... text/html 2012-04-10T13:41:57+01:00 - (sciviews.10.charlesli@spamgourmet.com) http://rwiki.sciviews.org/doku.php?id=guis:projects&do=diff1334058117 This information is currently a dump of this page and is not up to date. The motivation for moving the content to the wiki is that the updating cycle become shorter. <note> It is expected that people create a separate page for each project, ... text/html 2012-04-10T12:50:42+01:00 - (sciviews.10.charlesli@spamgourmet.com) http://rwiki.sciviews.org/doku.php?id=start&do=diff1334055042 * R is a free software environment for statistical computing and graphics. It runs on a wide variety of UNIX platforms, Windows and MacOS. This R Wiki is dedicated to the collaborative writing of R documentation. For information on browsers, RSS ... text/html 2012-04-03T16:02:40+01:00 Tomáš Sieger (tomas.sieger@seznam.cz) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2011:dendro&do=diff1333461760 Summary: An interactive dendrogram + heatmap plot for exploring results of hierarchical clustering analysis Description: R is extensively used to study intrinsic relations in multidimensional data. While hierarchical clustering analysis (HCA) can ... text/html 2012-04-03T13:04:36+01:00 Joshua Ulrich (josh.m.ulrich@gmail.com) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:vectorizedoptim&do=diff1333451076 Summary: Modify/wrap some optimization packages to support vectorized objective functions. In the end a new ‘vectorize’ option will be available in the optimization function (optim, optmx, nmkb, ...), which will then call the objective f... text/html 2012-04-02T17:22:53+01:00 Virgilio (virgilio.gomez@uclm.es) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:sp_econometrics&do=diff1333380173 Summary: Translate Matlab code in the Spatial Econometrics Toolbox for Bayesian methods into R. Description: The Spatial Econometrics Toolbox (http://www.spatial-econometrics.com/) provides cutting edge methods for Spatial Econometrics. Some of t... text/html 2012-04-02T11:26:37+01:00 - (sciviews.10.charlesli@spamgourmet.com) http://rwiki.sciviews.org/doku.php?id=developers:gui:other_softs&do=diff1333358797 For any audience other than experienced R users, a point-and-click GUI is essential for uptake. If R doesn’t provide that, they’ll just use something else that does. SPSS In my view one of the strongest features of the SPSS GUI is its ... text/html 2012-04-02T11:12:12+01:00 - (sciviews.10.charlesli@spamgourmet.com) http://rwiki.sciviews.org/doku.php?id=guis:comparison&do=diff1333357932 Package name Menu driven GUI? IDE GUI? Polish Windows Linux Mac Deducer + JGR + + ++ + + + ESS - + ? + + ? NppToR - + ? + ? ? R-Studio - + ++ + ... text/html 2012-03-31T15:39:59+01:00 - (sciviews.10.charlesli@spamgourmet.com) http://rwiki.sciviews.org/doku.php?id=tips:using-gui:find_gui&do=diff1333201199 If you would like to use R with a GUI, there are several pages that list different GUIs for R. Just try a couple of them, and chose the one you prefer. List of GUI Projects (in this wiki) List by Philippe Grosjean Wikipedia list List of lightweight... text/html 2012-03-30T14:58:22+01:00 Claudia Beleites (Claudia.Beleites@gmx.de) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:mentor&do=diff1333112302 sign up for the following mailing lists: R's mentor-private mailing list students + mentors mailing list Melange Google organizes the GSoC in Melange. You need to have a google account Register as mentor at melange Request to be a mentor f... text/html 2012-03-27T22:06:46+01:00 Stuart Greenlee (stuart.greenlee@gmail.com) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:xts&do=diff1332878806 Improve data subsetting approaches, visualisation, and data analytics for xts time series objects. Description xts is a subclass of zoo, designed to allow the fastest possible manipulation of large time series objects. Some of the core xts functi... text/html 2012-03-26T15:07:14+01:00 Yann Richet (yann.richet@irsn.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:optim.c&do=diff1332767234 /* * R : A Computer Language for Statistical Data Analysis * Copyright (C) 1999-2007 The R Development Core Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as publis... text/html 2012-03-26T13:18:08+01:00 Christoph Molnar (christohp.molnar@googlemail.co) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:wikipediar&do=diff1332760688 wikipediaR package Summary: A package for retrieving and handling wikipedia articles Description: Wikipedia is a great source of information, which can be accessed free and analyzed. For other resources like Twitter and OpenStreetMap there are ...