I have been using a lot of R lately in my work. R (main site) is an open source statistical computing platform. Saying R is only used for statistics does not do it justice. I am finding it to be a really powerful statistical and optim...
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Rose plot using Deducers ggplot2 plot builder
The (excellent!) LearnR blog had a post today about making a rose plot in ggplot2. Following today’s announcement, by Ian Fellows, regarding the release of the new version of Deducer (0.4) offering a strong support for ggplot2 using a GUI plot builder, Ian also sent an e-mail where he shows how to create a rose plot using the new...
Consultants’ Chart in ggplot2
Excel Charts Blog posted a video tutorial of how to create a circumplex or rose or dougnut chart in Excel. Apparently this type of chart is very popular in the consulting industry, hence the “Consultants’ Chart”. It is very easy to make this chart in Excel 2010, but it involves countless number of clicks and 
Hard drive occupation prediction with R – The linear regression
On some environments, disk space usage can be pretty predictable. In this post, we will see how to do a linear regression to estimate when free space will reach zero, and how to assess the quality of such regression, all using R - the statistical soft...
Hard drive occupation prediction with R
On some environments, disk space usage can be pretty predictable. In this post, we will see how to do a linear regression to estimate when free space will reach zero, and how to assess the quality of such regression, all using R - the statistical soft...
Presentations and video from useR! 2010 available
For anyone who missed the useR! 2010 conference in Gaithersburg last month (or just wants to revisit some of the amazing talks), you can now find slides from many of the contributed presentations available for download. (Look for the link to download slides.) The presentations from the Revolution team members are there, including: My presentation on Evolving R...
Notes from useR! 2010
R is a free software environment for statistical computing and graphics, used by a growing number of economists, engineers, and data analysts every day at Google. We’ve even published our R Style Guide on Google Code. The R community has...
Notes from useR! 2010
R is a free software environment for statistical computing and graphics, used by a growing number of economists, engineers, and data analysts every day at Google. We’ve even published our R Style Guide on Google Code. The R community has...
useR 2010 at NIST in Gaithersburg
This past week, the annual R user conference useR! 2010 took place at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD (which is a tad northwest of Washington, DC). Kate Mullen and her team of local organizers did a truly...
useR 2010 at NIST in Gaithersburg
This past week, the annual R user conference useR! 2010 took place at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD (which is a tad northwest of Washington, DC). Kate Mullen and her team of local organizers did a truly...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
