Monthly Archives: November 2009

Seminar: Reproducible Research with R, LaTeX, & Sweave

November 16, 2009
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Theresa Scott, instructor of the previously mentioned R workshop and weekly R clinic, is giving a lecture entitled "Reproducible Research with R, LaTeX, & Sweave" in MRB III, room 1220, this Wednesday 11/18 at 1:30.  You can see more details about the lecture here. Looks like her slides as well as much more introductory material on R, Latex, and Sweave...

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Infomaps using R – Visualizing German unemployment rates by district on a map

November 16, 2009
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Infomaps using R – Visualizing German unemployment rates by district on a map

Lately, David Smith from REvolution Computing set out to challenge the R community with the reprocuction of a beautiful choropleth map (= multiple regions map/thematic map) on US unemployment rates he had seen on the Flowing Data blog. Here you can find the impressing results. Being a fan of beautiful visualizations I tried to produce

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R in Action – early thoughts

November 16, 2009
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R in Action – early thoughts

I was invited to review the book R in Action written by Rob Kabacoff. Since I consider the Quick-R website, created by the same smart guy, one of the most valuable resources about R, It is both an honor and a pleasure to have the opportunity to take an...

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The Top Scores for Canabalt, Take 2

November 15, 2009
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The Top Scores for Canabalt, Take 2

Introduction As promised on Thursday, here’s my second pass at a statistical analysis of Canabalt scores. There are some useful results I’ll present right at the start, and then there are some results that are more or less worthless, except that working through my own mistakes helped me to think more clearly about statistical modeling in

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OpenMX

November 15, 2009
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OpenMX

Looks promising: http://openmx.psyc.virginia.edu/Right now it cannot be build from source because there are some comparabilities between OpenMx and R 2.10.0, but I assume this will be resolved soon.And the development seems to be quite active.

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R Tutorial Series: Scatterplots

November 12, 2009
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R Tutorial Series: Scatterplots

A scatterplot is a useful way to visualize the relationship between two variables. Similar to correlations, scatterplots are often used to make initial diagnoses before any statistical analyses are conducted. This tutorial will explore the ways in whic...

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Canabalt

November 12, 2009
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Canabalt

At the office today, I got into a discussion with two of my fellow graduate students about the distribution of scores you can get while playing Canabalt. Because (1) the layout of the levels in the game is fully randomized and (2) the difficulty of certain actions (specifically jumping through windows) is exceptionally high, we

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Graph Examples from Visualizing Data by William Cleveland

November 12, 2009
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Graph Examples from Visualizing Data by William Cleveland

The trellis graphics approach was pioneered by various statistical researchers and the ideas are used extensively in the book “Visualizing Data” by William Cleveland. There are various resources on the website for trellis graphics including S code for creating the majority of the graphs that appear in the book. Inspired by efforts on the Learning

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Sweave-Lyx from terminal on Mac

November 12, 2009
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Mark Heckmann writes:In your paper "Using Sweave with Lyx" (great work bty) you pointed out that one can see the sweave error code when processing when starting lyx from the terminal. I just changed from Windows to Mac so that's new for me. Could you s...

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Example 7.17: The Smith College diploma problem

November 12, 2009
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Example 7.17: The Smith College diploma problem

Smith College is a residential women's liberal arts college in Northampton, MA that is steeped in tradition. One such tradition is to give each student at graduation a diploma at random (or more accurately, in a haphazard fashion). At the end of the ceremony, a diploma circle is formed, and students pass the diplomas that they receive to...

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