1266 search results for "tutorial"

Visualizing categorical data in R

December 21, 2011
By
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...

Read more »

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

December 18, 2011
By
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...

Read more »

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

December 16, 2011
By

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...

Read more »

Create maps with maptools R package

December 13, 2011
By
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

Read more »

Mapping prosperity in France with R

December 12, 2011
By
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...

Read more »

R, academia and the democratization of statistics

December 12, 2011
By
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 →

Read more »

In case you missed it: November roundup

December 9, 2011
By

In case you missed them, here are some articles from November of particular interest to R users. R 2.14 now includes SVG support for Windows. The submissions for the Applications of R in Business contest are available for viewing online. A tutorial on using the Rdatamarket package to import public datasets into R. Free books on R for multivariate...

Read more »

Fitting distributions with R

December 1, 2011
By
Fitting distributions with R

Fitting distribution with R is something I have to do once in a while.A good starting point to learn more about distribution fitting with R is Vito Ricci's tutorial on CRAN. I also find the vignettes of the actuar and fitdistrplus packag...

Read more »

ConPA uses cloudnumbers.com as calculation backend

November 25, 2011
By
ConPA uses cloudnumbers.com as calculation backend

ConPA is an asset allocation application using the classic Markowitz approach. For the calculations the open-source statistical programming language R is used. R scripts are executed on cloudnumbers.com’s computer clusters in the Cloud and the results are displayed by ConPA frontend. ConPA allows to set the investment date of the portfolio, the target return and

Read more »

Quick-R Gets a Blog

November 21, 2011
By
Quick-R Gets a Blog

After maintaining the  Quick-R website (R tutorials and jumpstart) for the past 5 years, I’ve decided to add a blog so that I can go into more detail on topics related to practical data analysis. The statMethods blog will contain articles … Continue reading →

Read more »