1220 search results for "tutorial"

CloudStat School – The Introduction

January 1, 2012
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CloudStat School is a not yet released open source project. The objective is to create an interactive R Learning Platform. The best way to learn R programming is doing while learning. In CloudStat School, you will see a console box at your top left han...

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NIPALS: Principal Components Analysis with "R" (Part: 002)

January 1, 2012
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NIPALS: Principal Components Analysis with "R" (Part: 002)

We started some posts based on the tutorials of:"Multivariate Statistical Analysis using the R package chemometrics"The first post was:Principal Components Analysis with "R" (Part: 001)Now we continue with a second part.The graphics help us to dec...

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Top 20 R posts of 2011 (and some R-bloggers statistics)

January 1, 2012
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Top 20 R posts of 2011 (and some R-bloggers statistics)

R-bloggers.com is now two years young. The site is an (unofficial) online R journal written by bloggers who agreed to contribute their R articles to the site. In this post I wish to celebrate R-bloggers’ second birthmounth by sharing with you: Links to the top 20 posts of 2011 Statistics on “how well” R-bloggers did Read more...

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Call for Abstracts for useR! 2012

December 24, 2011
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The international R User Conference useR! 2012 will be held June 12-15 at Vanderbilt University in Nashville, Tennessee, USA, with a pre-conference full-day course offered on June 11. Participants are encouraged to submit a one-page abstract for oral or poster presentation at the conference. Half-day tutorials will be held in the morning and afternoon of June 12th. For tutorials,...

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Visualizing categorical data in R

December 21, 2011
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Visualizing categorical data in R

I came across an interesting SAS macro that was used for visualizing log odds relationships of data.  This type of chart is helpful for visualizing the relationship between a binary dependent variable and a continuous independent variable.  I...

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data.frame objects in R (via “R in Action”)

December 18, 2011
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data.frame objects in R (via “R in Action”)

The followings introductory post is intended for new users of R.  It deals with R data frames: what they are, and how to create, view, and update them. This is a guest article by Dr. Robert I. Kabacoff, the founder of (one of) the first online R tutorials websites: Quick-R.  Kabacoff has recently published the book ”R Read more...

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SVN Version Control, R, and some rambling thought on AWS,Rscripts

December 16, 2011
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I do a alot of my modelling on Rstudio hosted on EC2 instances. If you don’t use, I would highly recommend. A brilliant tool. Kudos to the Rstudio team. I have made a personal and professional pledge to obsessively use version control. I hope to show...

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Create maps with maptools R package

December 13, 2011
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Create maps with maptools R package

Baptiste Coulmont explains on his blog how to use the R package maptools. It is based on shapefile files, for example the ones offered by the French geography agency IGN (at départements and communes level). Some additional material like roads and railways are provided by the OpenStreetMap project, here. For the above map, you need

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Mapping prosperity in France with R

December 12, 2011
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Mapping prosperity in France with R

The choropleth below (created by Baptiste Coulmont) is a sort of prosperity map of France: the blue areas have high levels of personal income (actually, median household income tax paid divided by the number of household members), while the red areas have the lowest: The map was created with the help of GEOFLA "communes" shapefile (my high-school French begins...

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R, academia and the democratization of statistics

December 12, 2011
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R, academia and the democratization of statistics

I am not a statistician but I use statistics, teach some statistics and write about applications of statistics in biological problems. Last week I was in this biostatistics conference, talking with a Ph.D. student who was surprised about this situation … Continue reading →

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