I couldn’t contain myself (other more pressing things to do, but…), so I just took a quick time out and a coffee to put together a quick and dirty R function that will let me run queries over Google spreadsheet data sources and essentially treat them as database tables (e.g. Using Google Spreadsheets as a 
Crazy busy - no time to blog recently. Time enough for pretty pictures based upon previous words though...(thanks http://www.wordle.net).
I have data on user access to a website. This log file (helpdesk log.csv) just contains the date of access, and how many accesses were counted. It would look like this:Date hits13-07-2011 214-07-2011 116-07-2011 317-07-2011 4...As you can see, for day...
![Le Monde puzzle [#738]](http://feeds.wordpress.com/1.0/comments/xianblog.wordpress.com/11990/)
The Friday puzzle in Le Monde this week is about “friendly perfect squares”, namely perfect squares x2>10 and y2>10 with the same number of digits and such that, when drifting all digits of x2 by the same value a (modulo 10), one recovers y2. For instance, 121 is “friend” with 676. Here is my R 
I got a copy of Martin Theus and Simon Urbanek’s Interactive Graphics for Data Analysis a couple of years ago, whence it’s been sat on my bookshelf. Since I’ve recently become a self-proclaimed expert on interactive graphics I thought it was about time I read the thing. Which is exactly what I did last weekend 
I’ve updated the R code for the enhanced K-M plot to include additions and improvements by Gil Thomas and Mark Cowley. Thanks fellows for the feedback and updates. http://statbandit.wordpress.com/2011/03/08/an-enhanced-kaplan-meier-plot/
By showing off what R can do for businesses, you could share in $20,000 in prizes from Revolution Analytics. R is already used in many companies around the world, but many people who could benefit from using R still don't know what it is or how it could help them. That's why we're reaching out to the expertise of...
In our last post we determined that the ARIMA(2,2,2) model was just plain not going to work for us. Although i didn't show its residuals failed to pass the acf and pacf test for white noise and the mean of its residuals was greater than three whe...
I'll begin with a familiar image:That plot shows the closing values of the S&P 500 index from 1990 until today. It's a useful representation -- at a glance, you can tell when the market rose and fell. That said, it does have some problems: we're...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
