June 2013

Data imputation I

June 12, 2013 | Kevin Davenport

I recently entered kaggle titanic learning competition for fun and to see where my out of the box utilization of random forest would rank me (303 out of 5,882). It was interesting to see that much of the scoring differentiation came from score imputation, that is filling missing values based on other ... [Read more...]

Using Quandl in R

June 12, 2013 | Raymond McTaggart

Image by Jan Zander Our mantra here at Quandl is making data easy to find and easy to use. Following that goal we (and subsequently the community) have created packages that integrate Quandl’s API into a number of software platforms. Today we’ll take a look at R. R ... [Read more...]

More fun with data frames

June 12, 2013 | PirateGrunt

Data frames are such a straightforward and essential element of R that it’s easy to lose sight of some of their peculiarities. Last week, I developed some code which would tear apart some data frames and create new ones based on columns specified by the user. This would allow ... [Read more...]

Introducing GTrendsR

June 12, 2013 | Phil

Just another R blog has beed added to r-bloggers!In a paper, to be soon published in Conservation Biology and entitle Googling trends in conservation biology, we developed a package named GTrendsR that provides an interface for retrieving and displaying the information returned online by Google Trends in R. Whereas ... [Read more...]

Survey on R and education

June 12, 2013 | datamindjo

Main takeaways from the survey on R in education There is a need to train students in R since large majority of respondents (using R professionally) expect its market share to further increase. Large interest from both academics and students in online interactive R and statistics courses. Highest interest in ... [Read more...]

Updated age calculation function

June 12, 2013 | nzcoops

I had previously posted a function for calculating age with two dates. This was for the whole number ‘age’ where we are assuming you don’t want someone to be recorded as ’18′ until their 18th birthday (so more than just … Continue reading → [Read more...]

New book: Seamless R and C++ Integration with Rcpp

June 11, 2013 | David Smith

A new book from Dirk Eddelbuettel, co-author of the Rcpp package, is now available. Seamless R and C++ Integration with Rcpp can be ordered from Springer and from Amazon. The book provides the first comprehensive introduction to Rcpp, the R package that makes it easy to integrate C++ code with ... [Read more...]

More explorations of Shiny

June 11, 2013 | Francis Smart

I have continued to explore the functionality of the Shiny package released by the Rstudio team and I have been increasingly impressed.  The code fits together very clean and easy to manipulate or add to.  If you have some knowledge of html o... [Read more...]

Rickshaw d3.js from R with rCharts

June 11, 2013 | klr

Shutterstock’s open source Rickshaw provides a very nice tutorial to get started building interactive time series d3.js charts with Rickshaw.  I just could not resist rebuilding the tutorial but this time ENTIRELY in R with the amazing packages slidify and rCharts.  I have embedded the tutorial below, but ... [Read more...]

Visualizing densities of spatial processes

June 11, 2013 | arthur charpentier

We recently uploaded on http://hal.archives-ouvertes.fr/hal-00725090 a revised version of our work, with Ewen Gallic (a.k.a. @3wen) on Visualizing spatial processes using Ripley’s correction: an application to bodily-injury car accident location In this paper, we investigate (and extend) Ripley’s circumference method to correct ...
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