2442 search results for "GIS"

Friday quote: the handmaiden and the whore

August 19, 2011
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Friday quote: the handmaiden and the whore

Because it is Friday and because we collect quotes:If mathematics is the handmaiden of science, statistics is the whore: all that scientists are looking for is a quick fix without the encumbrance of a meaningful relationship. Statisticians are second-class mathematicians, third-rate scientists and fourth-rate thinkers. They are the hyenas, jackals and vultures of the scientific...

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useR2011 highlights

August 18, 2011
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useR2011 highlights

useR has been exhilarating and exhausting. Now it’s finished, I wanted to share my highlights. 10. My inner twelve year old schoolgirl swooning and fainting with excitement every time I chatted with a member of R-core. 9. Patrick Burns declaring that his company consists of himself and his two cats. And that one of the

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Get Used To It

August 18, 2011
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Get Used To It

This is a brain teaser. You've been warned.The S&P 500 is in a bear market (defined as the 50-day MA being below the 200-day MA) 30.8% of the time. Also, the S&P 500 has experienced single-day 4% declines 0.242% of the time. Of the times we exp...

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The R-Files: Martyn Plummer

August 17, 2011
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The R-Files: Martyn Plummer

"The R-Files" is an occasional series from Revolution Analytics, where we profile prominent members of the R Community. Name: Martyn Plummer Occupation: Statistician at International Agency for Research on Cancer Nationality: British Years Using R: 16 Known for: Member of R core group; member of R Journal editorial board Martyn Plummer is a longtime contributor to the R community...

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Lee E. Edlefsen – Scalable Data Analysis in R (useR! 2011)

August 17, 2011
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Lee E. Edlefsen – Scalable Data Analysis in R (useR! 2011)

The RevoScaleR package isn’t open source, but it is free for academic users. Collect and storing data has outpaced our ability to analyze it. Can R cope with this challenge? The RevoScaleR package is part of the revolution R Enterprise. This package provides data management and data analysis. Uses multiple cores and should scale. Scalability

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ggplot2 Version of Figures in “25 Recipes for Getting Started with R”

August 16, 2011
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ggplot2 Version of Figures in “25 Recipes for Getting Started with R”

In order to provide an option to compare graphs produced by basic internal plot function and ggplot2, I recreated the figures in the book, 25 Recipes for Getting Started with R, with ggplot2.The code used to create the images is in separate paragraphs, allowing easy comparison.Read...

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Sync Your Rprofile Across Multiple R Installations

August 15, 2011
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Sync Your Rprofile Across Multiple R Installations

Your Rprofile is a script that R executes every time you launch an R session. You can use it to automatically load packages, set your working directory, set options, define useful functions, and set up database connections, and run any other code you w...

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GDAT 2011 in Review

August 13, 2011
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GDAT 2011 in Review

As usual, the Guerrilla Data Analysis Techniques (GDAT) class was a total blast. Motivated students always guarantee that. It would really help our scheduling, however, if people didn't wait until the last nanosecond to register for the class. But give...

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Create an animated clock in R with ggplot2 (and ffmpeg)

August 12, 2011
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Because it’s Friday—and I needed to create this for a separate visualization—here is how to create an animated clock in R using ggplot2.In just about 20 lines of code! And here is the clock…I think this is a nifty way to show time elapse, rather than the windowed timelines I had used previously.

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Revolution Newsletter: August 2011

August 12, 2011
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The most recent edition of the Revolution Newsletter is out. The news section is below, and you read the full August edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Free 30-minute introduction to Revolution R Enterprise. On Wednesday August 24, author and blogger David...

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