I was planning to blog about the amazing time I had at Velocity 2009 last week, when this landed in my mailbox (edited for space and privacy): Subject: Seeking help with PDQ-R ...Date: Thu, 25 Jun 2009 15:51:21 -0500My name is James and I've be...
Monthly Archives: June 2009
August Guerrilla Class: Using R for Performance Analysis
Registrations are still open for the Guerrilla Data Analysis Techniques (GDAT) class being held August 10-14, 2009. The focus will be on using R and the new release of PDQ-R for performance analysis and capacity planning.All Guerrilla classes are hel...
RSI(2) Evaluation
Despite my best efforts, it's been a month since the last post of this series. The first post replicated this simple RSI(2) strategy from the MarketSci Blog using R. The second post showed how to replicate the strategy that scales in/out of RSI(2). ...
Conservatism of Congressional delegation and %Bush vote
Busy day today, so I'll just post this:plot(bush04 ~ cons_hr, type = "n",xlab="Mean ACU rating",ylab="2004 Bush vote",xlim=c(0,100),ylim=c(0,100),cex.lab=1.25,cex.axis=0.75,col.axis = "#777777",col.lab = "#777777")text(y=bush04,x=cons_hr, labels=statei...
R 2.9.1, CRANberries outage, and missing Java support
Just a short note that version 2.9.1 of R was released yesterday. And a corresponding Debian release went out as usual on the same day. One sour note: as the Java toolchain is currently broken, I had to disable compile-time support for Java. Just run R...
R 2.9.1, CRANberries outage, and missing Java support
Just a short note that version 2.9.1 of R was released yesterday. And a corresponding Debian release went out as usual on the same day. One sour note: as the Java toolchain is currently broken, I had to disable compile-time support for Java. Just run R CMD javareconf once installed if you need...
Multiple Imputation with Diagnostics (mi) in R: Opening Windows into the Black Box
Our article (by Yu-Sung, Jennifer, Masanao, and myself, and based also on work with Kobi, Grazia, and Peter Messeri) will be appearing in the Journal of Statistical Software, in a special issue on missing-data imputation. Here's the abstract: ...
Filtering cases
Something that's very important to be able to do in data analysis and visualization is to filter out cases. Let's say you want to do identical analyses of two different groups, or of one group and then a subset of it. R can do this a little differently...
Development of tikzDevice is underway
Development of the R package tikzDevice has been underway for about a month now. This package allows for the output of R graphics as TikZ commands. Charlie Sharpsteen and I have gotten it into an alpha stage. There is no real documentation but there is...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
