http://rwiki.sciviews.org/ 2012-02-01T11:46:24+01:00 http://rwiki.sciviews.org/ http://rwiki.sciviews.org/lib/images/favicon.ico text/html 2012-02-01T10:24:42+01:00 Petr Savicky (savicky@cs.cas.cz) http://rwiki.sciviews.org/doku.php?id=tips:stats-distri:distr_from_r_help&do=diff1328088282 The vectors (x_1, ... x_k) of non-negative numbers, which sum up to 1 form a (k-1)-dimensional simplex embedded into k-dimensional space. Points with the uniform distribution on this simplex may be obtained for example as diff(c(0, sort&#40... text/html 2012-01-29T23:27:59+01:00 Andrew Caines (andrewcaines7@gmail.com) http://rwiki.sciviews.org/doku.php?id=rugs:r_user_groups&do=diff1327876079 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 2012-01-19T11:00:09+01:00 Toby Dylan Hocking (toby.hocking@inria.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:interactive_animations&do=diff1326967209 Background: standard R graphics are based on the pen and paper model, which makes animations and interactivity difficult to accomplish. Non-interactive animations can be accomplished with the animation package, and some interactions with non-animate... text/html 2012-01-16T14:11:03+01:00 Toby Dylan Hocking (toby.hocking@inria.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012:image_labels&do=diff1326719463 Background: the directlabels package facilitates use of direct labels instead of legends in everyday statistical graphics made with lattice or ggplot2. Labeling is currently limited to textual annotations, but sometimes it is more informative to lab... text/html 2012-01-16T14:06:00+01:00 Toby Dylan Hocking (toby.hocking@inria.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2012&do=diff1326719160 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 Virgilio Gomez Rubio as a backup. Questions should be pos... text/html 2012-01-14T19:10:06+01:00 Petr Savicky (savicky@cs.cas.cz) http://rwiki.sciviews.org/doku.php?id=tips:stats-distri&do=diff1326564606 Overview of statistical distributions in R Distribution of the product of two correlated normals Distribution according to Benford's Law Distributions from R help mailing list Full content (page names) 0verview benford distr_from_r_help prod... text/html 2012-01-12T16:24:09+01:00 Philippe Grosjean (phgrosjean@sciviews.org) http://rwiki.sciviews.org/doku.php?id=wiki:dokuwiki&do=diff1326381849 DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain ... text/html 2012-01-09T09:27:40+01:00 Tanja Rothstein (mary.anne0123@gmail.com) http://rwiki.sciviews.org/doku.php?id=getting-started:installation:debian&do=diff1326097660 There is a mailing list “R Special Interest Group for Debian ports of R” R-SIG-Debian, where you can find, and should ask or discuss about Debian specific stuff related to R. Quantian, a Knoppix / Debian variant tailored to numerical and... text/html 2012-01-05T18:00:07+01:00 Emilio L. Cano (emilio.lopez@urjc.es) http://rwiki.sciviews.org/doku.php?id=packages:cran:sixsigma&do=diff1325782807 SixSigma is an R package developed to deal with Six Sigma projects with R. We are just now working in new functions in order to cover a wide range of activities for any Six Sigma Project. Install SixSigma package, and run example(SixSigma) to see th... text/html 2011-12-19T11:55:35+01:00 Tony Breyal (tony.breyal@gmail.com) http://rwiki.sciviews.org/doku.php?id=tips:programming:code_optim2&do=diff1324292135 — Philippe Grosjean 2006/02/05 [Last tested: R 2.2.1 Win XP] Timings are done on a Pentium IV 3Ghz machine under Win XP. If you have a slower machine, think to reduce the size of the calculation! Question: I want to generate some characte... text/html 2011-12-02T19:12:54+01:00 Ronald Hochreiter (ronald.hochreiter@wu.ac.at) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2011:convex_optimization&do=diff1322849574 Summary: CVX-R: Disciplined convex programming in R Description: Convex optimization problems represent a class of optimization problems that can be solved efficiently and reliably. They include least-squares and linear programming problems. Surpri... text/html 2011-11-28T10:28:38+01:00 Dimitris Rizopoulos (dimitris.rizopoulos@med.kuleuven.be) http://rwiki.sciviews.org/doku.php?id=packages:cran:jm&do=diff1322472518 Package JM fits shared parameter models for the joint modelling of normal longitudinal responses and event times under a maximum likelihood approach. Various options for the survival model and optimization/integration algorithms are provided. Desc... text/html 2011-11-23T23:34:22+01:00 Matthew Dowle (mdowle@mdowle.plus.com) http://rwiki.sciviews.org/doku.php?id=packages:cran:data.table&do=diff1322087662 Please feel free to add and edit! Hints and Tips Do's and Don'ts 1. Don't subset .SD, use the columns directly > n=10000 > DT = data.table(grp=1:n,name=as.character(as.hexmode(1:n)),x=rnorm(10*n),y=rnorm(... text/html 2011-11-21T08:41:32+01:00 F. Patrick Graz (fpgraz@gmail.com) http://rwiki.sciviews.org/doku.php?id=tips:spatial-data:import_export&do=diff1321861292 Your first port of call should probably be the rgdal package. If that doesn’t work, check the table below. Import and export spatial data into and from sp classes The sp package provides S4 classes for representing spatial data such as poi... text/html 2011-11-12T09:53:18+01:00 Philippe Grosjean (phgrosjean@sciviews.org) http://rwiki.sciviews.org/doku.php?id=getting-started:what-is-r:what-is-r&do=diff1321087998 The description on the main R web page is good, and needn’t be repeated here; it describes a bit about R’s history and technical capabilities. Some things you might want to know about R if you’re encountering it for the first time:... text/html 2011-11-11T18:53:04+01:00 Toby Dylan Hocking (toby.hocking@inria.fr) http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2011&do=diff1321033984 Everyone who wants to participate in this year’s Google Summer of Code with R please join our google group: gsoc-r@googlegroups.com Overview This wiki page will be the central hub of information about the R Project participation in the Goo... text/html 2011-11-08T09:00:48+01:00 Stephan Wahlbrink (orcaforge@goolgemail.com) http://rwiki.sciviews.org/doku.php?id=guis:projects&do=diff1320739248 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 2011-11-07T14:45:51+01:00 J C Nash (nashjc@uottawa.ca) http://rwiki.sciviews.org/doku.php?id=developers:projects:gci2011:debianrinstaller&do=diff1320673551 Task Summary: Write a function/package that will install a package first from the debian R repository if the package is there, else install from the regular CRAN repository Task Description: Check function has required inputs Look for package n... text/html 2011-11-07T14:34:16+01:00 J C Nash (nashjc@uottawa.ca) http://rwiki.sciviews.org/doku.php?id=developers:projects:gci2011&do=diff1320672856 This page is to initiate possible projects for the Google Code-In 2011. If you want to propose a project or participate in this year’s GCI with R please join our google group: gci-r@googlegroups.com Details of the competition can be found her... text/html 2011-11-04T11:14:25+01:00 Claudia Beleites (Claudia.Beleites@gmx.de) http://rwiki.sciviews.org/doku.php?id=developers:projects:gci2011:guidependency&do=diff1320401665 Task Summary: Develop a figure that shows the use of the different GUI toolkits available in R. Task Description: The graph should show the different GUI toolkits, and how many / which packages rely on them to: enhance it depend on the toolkit ...