I will be speaking at R/Finance 2011 in Chicago at the end of April regarding the futile.paradigm, my R language …Continue reading »

Statistics and Computing has received several papers on ABC and plans to make a special ABC issue out of these. All submissions prior to June 2011 that will be accepted will be published in this special issue. The special issue is identified as an article type on the on-line page. In case of questions or

This is a great post, very true, not enough of R’s graphics are well displayed online to really see how to achieve what the often ambiguous ‘help’ information suggests. http://research.stowers-institute.org/efg/R/Graphics/Basics/mar-oma/index.htm I particularly find “mtext(“lol”, outer=T)” to be particularly useful (requires “oma=c(2,2,2,2)” or similar). http://addictedtor.free.fr/graphiques/ This site is somewhat of the way there, but I’ve found

One of the best ways to learn how to code in R is to view sample scripts that people share. I recently came across this post where Michael uses R to scrape twitter and collect all sorts of great data … Continue reading →

In analysis of Child Health data, generally z-scores or percentile groupings are used as children do not growth is not linear. The CDC (Center for Disease Control and Prevention) have released tables of data for calculating these z-scores and percentiles, and here are some scripts for R to calculate these in your sample. CLICK HERE

I recently attended the 2011 Australasian Mathematical Psychology Conference. This post summarises a few thoughts I had on the use of R, Matlab and other tools in mathematical psychology flowing from discussions with researchers at the conference. I w...

Here is an email sent by one of my students a few days ago: Do you know how to integrate a function with an “if”? For instance: >X=rnorm(100) >Femp=function(x){ + return(sum(X<x)) +} >integrate(Femp,0,1)$value does not work. My reply was that the fundamental reason it does not work is that integrate (or curve for instance)