June 2012

reading shape files in R

June 24, 2012 | ricckli

If I would like to adjust a shape file I normally used the way over an excel file or a text file to get a table and to join this with an existing shape file. Due to the sp and rgdal packages in R you can manipulate shapefiles directly in ... [Read more...]

Optimal sorting using rpart

June 24, 2012 | Bogumił Kamiński

Some time ago I read a nice post Solving easy problems the hard way where linear regression is used to solve an interesting puzzle. Following the idea I used rpart to find optimal decision tree sorting five elements.It is well known that... [Read more...]

Querying DBpedia from R

June 24, 2012 | Karsten W.

DBpedia is an extract of structured information from wikipedia. The structured data can be retrieved using an SQL-like query language for RDF called SPARQL. There is already an R package for this kind of queries named SPARQL.There is an S4 class Dbpedia part of my datamart package that aims ... [Read more...]

Blog with R Markdown and tumblr: Part I

June 24, 2012 | Jeffrey Horner

I finally got a chance this weekend to settle on a way to include R Markdown into my blogging process. I needed to do this as my subsequent postings will involve more code chunks regarding Rook deployment and examples, and R Markdown formats and highlights code chunks like a boss! ... [Read more...]

R 2.15.1 Available

June 24, 2012 | The Ubuntu R Blog

Ubuntu packages for the latest release of R are now available on CRAN and RutteR PPA. If you have either repository installed, Ubuntu should have updated R automatically. If you do not have either repository isnallted, see the Installing R tab above.... [Read more...]

Highlights of the useR! 2012 – Review of the reviews

June 24, 2012 | Pairach

It’s gutted that I could not attend useR! 2012 after having a great time at useR!2011 at Warwick. However, a great active online community of useRs allows me to get lots of goods stuffs from the conference even though I did not attend physically. By keep following the #useR2012 and #... [Read more...]

Mexico City’s Metro Statistics

June 24, 2012 | Jose

I used R and ggplot2 to make a bubble map of Mexico City’s Metro passenger count from January to February 2012. The statistics are stunning, some stations for example Indios Verdes, reached 10 million passengers in jus three months. You can see the code below and get the data for the ... [Read more...]

setting your working directory permanently in R

June 24, 2012 | ricckli

Most of us R users are using a special working directory for the daily work in R. But I was bothered in typing everytime in my command line prior using R. Also using this line at the first position in scripts was not pleasent enough. So how to get around ... [Read more...]

The R-Podcast Screencast 2: Visualization with ggplot2

June 23, 2012 | Eric

Here is the second screencast episode of the R-Podcast to accompany episode 8 of the R-Podcast: Visualization with ggplot2. In this screencast I demonstrate a real-time session of using ggplot2 to create boxplots for a visualization of hockey attendance in the NHL. The R code created in this screencast is available ... [Read more...]

Rcpp 0.9.11

June 22, 2012 | Thinking inside the box

Release 0.9.11 of Rcpp arrived on CRAN this morning and in Debian later today. This is a somewhat incremental release with a few internal improvements and few new features. One interesting new development has been contributed by John Chambers who i... [Read more...]

Maps of changes in area boundaries, with R

June 22, 2012 | civilstat

Today a coworker needed some maps showing boundary changes. I used what I learned last week in the useR 2012 geospatial data course to make a few simple maps in R, overlaid on OpenStreetMap tiles. I’m posting my maps and … Continue reading → [Read more...]

Updates to Old code

June 22, 2012 | Steven Mosher

I notice from time to time that people download code from the drop box. The drop box lags  CRAN.  I’ve upload the newest versions to the drop box. In the future I will post new releases to the drop box before I submit to CRAN. [Read more...]
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