Monthly Archives: March 2010

Code Highlights in WordPress

March 26, 2010
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I’ve come across a very useful plugin for WordPress which highlights code in posts using GeSHi called WP-Syntax. This plugin is easy to use and adds highlights simply by putting the appropriate tags around code blocks. For instance, we can make the following R code much more readable by using WP-Syntax.## Generate 100

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Predicting Pizza

March 26, 2010
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Predicting Pizza

What's the secret to the best pizza in New York? That's what statistical consultant and R user Jared Lander sought to find out, by analyzing the rankings of NY pizza joints at MenuPages.com, and building a regression model for ratings based on variables like localion, price, number of reviews, and pizza-oven type (gas, coal or wood)? Here's a scatterplot...

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Summarising data using dot plots

March 26, 2010
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Summarising data using dot plots

A dot plot is a type of display that compares counts, frequencies, totals or other summary measures for a series of categories. The dot plot can be arranged with the categories either on the vertical or horizontal axis of the display to allow comparising between the different categories as well as comparison within categories where

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BioMart (and biomaRt)

March 26, 2010
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BioMart (and biomaRt)

I’ve been vaguely aware of BioMart for a few years. Inexplicably, I’ve only recently started to use it. It’s one of the most useful applications I’ve ever used. The concept is simple. You have a set of identifiers that describe a biological object, such as a gene. These are called filters. They have values –

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Finance::YahooQuote 0.23

March 25, 2010
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Rule number one in regression testing is to not depend on volatile data. Which I seem to have violated in file t/02simple.t in the Perl package Finance::YahooQuote.Which lead the automated Perl test scripts to remind me for a few days now that the f...

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Finance::YahooQuote 0.23

March 25, 2010
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Rule number one in regression testing is to not depend on volatile data. Which I seem to have violated in file t/02simple.t in the Perl package Finance::YahooQuote.Which lead the automated Perl test scripts to remind me for a few days now that the fu...

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Finance::YahooQuote 0.23

March 25, 2010
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Rule number one in regression testing is to not depend on volatile data. Which I seem to have violated in file t/02simple.t in the Perl package Finance::YahooQuote.Which lead the automated Perl test scripts to remind me for a few days now that the f...

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How Misinformed are Tea Party Protesters About Tax Policy?

March 25, 2010
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How Misinformed are Tea Party Protesters About Tax Policy?

For those of you used to reading about international relations, I apologize for the following brief foray into American politics. It appears that the American Enterprise Institute and David Frum have decided to (abruptly) part ways. Before David left, however, he and his team of interns provided some interesting statistical insight into the

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R plotting fun

March 25, 2010
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R plotting fun

Not easy to produce cool looking graphs in R, but it can be done. The results of some messing around are above. Here is the code I used:

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Future of Open Source Survey – Results

March 25, 2010
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The results of the 2010 Future of Open Source survey were presented at last week's Open Source Business Conference in San Francisco, and here are they are in slide format: While I was at the presentation I captured a few additional tidbits from the presentation that weren't in the slides. The continued growth of open-source generally was a prevalent...

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