A half hour lecture by Jeffery Horner on RApache.
Monthly Archives: August 2010
Suggestions for R-Chart iPhone App?
Have any ideas for news sources to include in the new R-Chart iPhone App? I am hoping to make some revisions and fixes and figured I would get some feedback from anyone who happened download it. Specifically, I am planning on removing...
RODM Article on the Oracle Technology Network
A new article over at OTN demonstrates the new RODM package that allows you to control Oracle Data Mining within the database itself using R. This and the recent announcement over at Revolution Analytics both reveal more solutions for proces...
Using R and r.mapcalc (GRASS) to Estimate Mean Topographic Curvature
Recently I was re-reading a paper on predictive soil mapping (Park et al, 2001), and considered testing one of their proposed terrain attributes in GRASS. The attribute, originally described by Blaszczynski (1997), is the distance-weighted mean differe...
countrycode R package
I am digging this countrycode package in R I just found, written by a UM grad student Vincent Arel-Bundock. Very nice. Thanks! countrycode("2","cown","iso3c") "USA" It would be better if the package could handle failed matches a little more gracefully: e.g., > countrycode(c(2,730,818),"cown","iso3c") "USA" when the user was expecting to get back a vector
Image Data and Classification with R
03.08.2010 In this post i would like to demonstrate the ability of R to handle and classify image data with the help of ImageJ and Rserve bundled and implemented in Bio7. In general R is a very useful application for image analysis and plenty of “pure” R packages for image analysis are already available. But
Announcing Big Data for Revolution R
I've hinted this was coming a few times before, but with today's press release the announcement is official: the next release of Revolution R Enterprise will include "Big Data" capabilities thanks to the new RevoScaleR package. We're pretty excited at how it's turned out: it's kinda amazing to be able to use R's formula syntax like this: arrDelayLm2 <-...
Quantitative Candlestick Pattern Recognition (Part 2 — What’s this Natural Language Processing stuff?)
I wanted to briefly add one more thought regarding the temporal nature of probabilities as was alluded to in my correspondence with Adam, as well as the prior closing comments on the Chaos post (structure coalescing and dispersing).I will borrow from t...
JSM 2010 [day 2]
![JSM 2010 [day 2]](http://www.r-bloggers.com/wp-content/uploads/2010/08/img_7399.jpg?w=450&h=337)
After a very good early run in Stanley Park, I went to a morning session on new statistical challenges in genetics, but unfortunately could not keep focussed enough (due to a very short night, still being not tuned to Pacific time!) so I ended up chatting with Sid Chib at the Springer booth about the 
RcppExamples 0.1.1
On Friday, I quickly provided a new release of RcppExamples, our example package for using Rcpp, to CRAN. Very little content has been updated --- and a new TODO file even notes that we need to add more documentation for the new Rcpp API. And update ex...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
