sqldf

Say it in R with "by", "apply" and friends

January 28, 2012 | 0 Comments

Iris versicolor (Source: Wikipedia)R is a language, as Luis Apiolaza pointed out in his recent post. This is absolutely true, and learning a programming language is not much different from learning a foreign language. It takes time and a lot of pr...
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Slides: “Accessing Databases from R” #rstats

May 7, 2011 | 0 Comments

For the past few meetings of the Greater Boston useR Group, we have been opened with an introductory “useR Vignette” talk on a topic which may be helpful for new R users. This week, I presented an overview of accessing databases from R. Several people have tweeted and blogged nice ... [Read more...]

Data Aggregation in R: plyr, sqldf and data.table

April 28, 2011 | 0 Comments

I’ve also previously put up a couple of posts about aggregating data in R. In this post, I’m going to be trying some other alternative methods for aggregating the dataset. Before I begin, I’d like to thank Matthew Dowle for highlighting these to me. It’s a ... [Read more...]

Loading Big (ish) Data into R

November 24, 2009 | 0 Comments

So for the rest of this conversation big data == 2 Gigs. Done. Don’t give me any of this ‘that’s not big, THIS is big’ shit. There now, on with the cool stuff: This week on twitter Vince Buffalo asked about loading a 2 gig comma separated file (csv) into R (... [Read more...]

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