Monthly Archives: January 2010

Coming to R from SQL, Python, SAS, Matlab, or Lisp

January 14, 2010
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The theme of last week's meetup of the New York R User Group was The R Rosetta Stone and focused on translating between R and other data languages: SAS, Matlab, SQL, Python and Clojure. I really wish I'd been there, because it's a great topic -- one of the best ways to get started with R is to bootstrap...

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Quick thoughts on “R-Powered Web Apps”

January 13, 2010
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Good session at last nights Bay Area UseR Group meeting on R-Powered Web Apps. First of all, there's clearly a lot of interest in using R in Web-based applications: although the program was only announced a week ago, more than 100 people showed up for the talks from Jeff Horner and Jeroen Oons. Second, the Twitter offices are very...

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Example 7.22: the Knapsack problem

January 13, 2010
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Example 7.22: the Knapsack problem

The website http://rosettacode.org/wiki/Knapsack_Problem describes a fanciful trip by a traveler to Shangri La. They can take as many as they want of three valuable items, as long as they fit in a knapsack. The knapsack will hold no more than 25 weight units, and no more than 25 volume units. The problem is to maximize the...

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Making Maps with R

January 13, 2010
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Making Maps with R

***This tutorial has been updated, please click here*** I frequently use R (a free software environment for statistical computing and graphics) for data analysis.  As almost all my data are spatial it is often good to produce a map of the results without having to export the data into another GIS package. I am often

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Rcpp 0.7.2

January 13, 2010
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pre{ border: 1px solid black ; }Rcpp 0.7.2 is out, checkout Dirk's blog for detailsselected highlights from this new version:character vectorsif one wants to mimic this R code in C> x

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Rcpp 0.7.2

January 12, 2010
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Not even two weeks after the Rcpp 0.7.1 release, Romain and I have a new one to present: Rcpp 0.7.2. It has been uploaded to CRAN and Debian, and the respective package management systems should carry them around in the next few hours. As always, th...

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Rcpp 0.7.2

January 12, 2010
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Not even two weeks after the Rcpp 0.7.1 release, Romain and I have a new one to present: Rcpp 0.7.2. It has been uploaded to CRAN and Debian, and the respective package management systems should carry them around in the next few hours. As always, the l...

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Rcpp 0.7.2

January 12, 2010
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Not even two weeks after the Rcpp 0.7.1 release, Romain and I have a new one to present: Rcpp 0.7.2. It has been uploaded to CRAN and Debian, and the respective package management systems should carry them around in the next few hours. As always, th...

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Academics’ Slang: Orthogonal

January 12, 2010
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H. G. Wells famously said that, “statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write.” I think we’re getting closer to that day: even the Supreme Court of the United States plan...

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In case you missed it: December roundup

January 12, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. This post looked at a climate change controversy involving the weather in Darwin, Australia and a review of the source data using R. This post showed how to access global weather data from the US National Centers for Environment Prediction using...

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