Blog Archives

Nutritional supplements, ranked

March 16, 2010
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Nutritional supplements, ranked

One of my favourite shows on TV right now is The Big Bang Theory. For those who haven't seen it: it's like Friends, except instead of New York yuppies, it's PhD physicists and engineers at CalTech. It's nice to see geeks and smart people be the focus (rather than the comic relief) of a sitcom. Also, the equations on...

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Visualizing droughts with R

March 15, 2010
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Visualizing droughts with R

Physicist and weather scientist Joe Wheatley used R to design and create a useful visual representation of how drought affects a region over long time-scales. Instead of charting absolute rainfall (or lack thereof), he instead charts the Standardized Precipitation Index (SPI), where extreme values (above 2 or below -2) indicate extreme wetness or dryness compared to the usual precipitation...

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R workshops in Vancouver

March 12, 2010
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Isabella Ghement of the Ghement Statistical Consulting Company is presenting two R workshops in Vancouver, British Columbia: "An Introduction to the Statistical Software Package R" (April 15-16,2010; 8:30am-4:30pm; BCIT; Vancouver) "Advanced Statistical Modeling Using the Statistical Software Package R" (May 20-21, 2010; 8:30am-4:30pm; BCIT; Vancouver) Click the links for more information and registration details.

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Package Update Roundup: Feb 2010

March 12, 2010
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This is a list of new or updated packages that were released for R in February, as announced on the r-packages mailing list. To include other updates on this list, please email David Smith. For a complete list of all updates on CRAN, see the CRANberries archive for February 2010. Follow package name links for ratings and other information...

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Because it’s Friday: 3d Mandelbrot

March 12, 2010
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Because it’s Friday: 3d Mandelbrot

To while away your Friday afternoon, why not explore the nooks and crannies of a 3-D version of the Mandelbrot set: And here's how to create your own 2-D Mandelbrot set in R.

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Clinical Reporting with R

March 11, 2010
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Clinical Reporting with R

One of the main goals of analyzing clinical data is to produce a report. (What, you thought it was to make the world a better place?) The R Project has, of course, all the tools you need to perform the statistical analysis, calculate the tables of results, and present conclusions graphically. But how can you assemble all of that...

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Clustering the world’s diets

March 10, 2010
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Clustering the world’s diets

Cluster Analysis is a useful technique for classifying the members of a group (people, events, measurements, etc) into "similar" groups. How "similar" is defined depends on the application, but generally involves looking at a number of attributes of the group. For example, we could cluster people by looking at their skin color, hair type, facial features, perhaps even genetic...

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In case you missed it: February roundup

March 10, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. We announced the availability on YouTube of "What is R", a 4-part video based on a recent webcast I hosted. We announced a webinar I hosted on REvolution's debugger for R (a recorded replay is now available). We linked Salvio Rodrigues...

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Open Source is Opening Data to Predictive Analytics

March 9, 2010
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This article by REvolution Computing CEO Norman Nie is crossposted from the Future of Open Source Forum. The R Project: despite there being over 2 million users of this open-source language for statistical data analysis, you might not have heard of it ... yet. You might have seen this feature in the New York Times last year, and you...

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White House taps Edward Tufte to explain the stimulus

March 8, 2010
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White House taps Edward Tufte to explain the stimulus

Edward Tufte, a pioneer of effective data visualization (and a personal hero) has just been appointed by the White House to the Recovery Independent Advisory Panel. This panel advises The Recovery Accountability and Transparency Board, whose job is to track and explain $787 billion in recovery stimulus funds. Tufte explains: I'm doing this because I like accountability and transparency,...

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