Monthly Archives: May 2010

highlight 0.1-8

May 21, 2010
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I've pushed version 0.1-8 of highlight to CRAN. highlight is a syntax highlighter for R that renders R source code into some markup language, the package ships html and latex renderers but is flexible enough to handle other formats. Syntax highligh...

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ACM Transactions on Modeling and Computer Simulation

May 20, 2010
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ACM Transactions on Modeling and Computer Simulation

Pierre Lecuyer is the new editor of the ACM Transactions on Modeling and Computer Simulation (TOMACS) and he has asked me to become an Area Editor for the new area of simulation in Statistics. I am quite excited by this new Æditor’s hat, since this is a cross-disciplinary journal: The ACM Transactions on Modeling and

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R: A random walk though OOP land.

May 20, 2010
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If you are used to object oriented programing in a different language, the way R does things can seem a little strange and backwards. “proto” to the rescue. With this library you can simulate “normal” OOP. I found the examples for proto not so helpful, so to figure out how the package works I sent

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Load Testing Think Time Distributions

May 20, 2010
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Load Testing Think Time Distributions

One of my gripes about some commercial load testing tools is that they only provide a think time distribution (Z) that is equivalent to uniform variates in the client-script. If you want some other distribution, you have to code it and debug it yoursel...

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Calling all T-shirt designers

May 20, 2010
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Got design skills as well as R skills? The organizers of the useR! 2010 conference are looking for a design to be used on the conference T-shirts. Mango Solutions (who are sponsoring the T-shirt) will select the winner, but personally I'd give extra points for designs that use R itself -- it's been done before! R-statistics blog: useR-2010 is...

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Tutorial: Principal Components Analysis (PCA) in R

May 20, 2010
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Found this tutorial by Emily Mankin on how to do principal components analysis (PCA) using R. Has a nice example with R code and several good references. The example starts by doing the PCA manually, then uses R's built in prcomp() function to do the s...

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RcppArmadillo 0.2.0 (and 0.2.1)

May 20, 2010
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With the Rcpp 0.8.0 release on Monday, Romain, Doug and I were able to follow-up with a new RcppArmadillo release. RcppArmadillo uses Rcpp (and a few dozen lines of 'glue') to provide a transparent interface from R to Conrad Sanderson's impressive Arma...

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RcppArmadillo 0.2.0 (and 0.2.1)

With the Rcpp 0.8.0 release on Monday, Romain, Doug and I were able to follow-up with a new RcppArmadillo release. RcppArmadillo uses Rcpp (and a few dozen lines of 'glue') to provide a transparent interface from R to Conrad Sanderson's impressive Arm...

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Prediction in the cloud: turbulent

May 19, 2010
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While Microsoft rolled out its Technical Computing Initiative -- promising new tools for distributed parallel computing on large data sets in the cloud -- with much fanfare earlier this week, Google made a rather more understated response. In a post to the developer-focused Google Code Blog, they quietly announced two new, but potentially disruptive, products. Google BigQuery promises super-fast...

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Introduction to Revolution R webinar tomorrow, May 20

May 19, 2010
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A quick reminder that I'll be hosting a free webinar tomorrow. Mainly intended for those new to R and Revolution, An Introduction to Revolution R will give an overview and history of the R Project and the additional features of the Revolution R products. But even if you've used R before, there will be lots of useful tips and...

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