1219 search results for "tutorial"

Online resources for handling big data and parallel computing in R

May 6, 2012
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Online resources for handling big data and parallel computing in R

by Yanchang Zhao, RDataMining.com Compared with many other programming languages, such as C/C++ and Java, R is less efficient and consumes much more memory. Fortunately, there are some packages that enables parallel computing in R and also packages for processing … Continue reading →

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Improving script_001: “Monitor”

May 6, 2012
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Improving script_001: “Monitor”

After having a look to this video: http://www.screenr.com/UxH8 from rtwotutorials, and reading some tutorials, I decided to modified the script from the previous post: Practicing Script with “ R”: Monitor , in order to make it more r...

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reshape (from base) Explained: Part II

May 5, 2012
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reshape (from base) Explained: Part II

Part II Explains More Complex  Wide to Long With base reshape  In part I of this base reshape tutorial we went over the basics of reshaping data with reshape.  We learned two rules that help us to be more efficient … Continue reading →

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Practicing Script with “ R”: Monitor

May 4, 2012
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Practicing Script with “ R”: Monitor

These are  samples analyzed by a reference method (column: Protein) and by an analytical method with a certain model (column: IFTpro). The idea is to create a Monitor Report for some basic statistics (RMSEP, Bias, SEP, R,RSQ) to see how ...

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Monitoring some statistics with "R"

May 1, 2012
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Monitoring some statistics with "R"

I´ve been practicing after reading a couple of tutorials:R: A self-learn tutorialProgramming in Rto create a basic function  to monitor some  basic statistics as RMSEP, Bias, SEP, Correlation and RSQ. I´ve been doing this with other so...

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An academic programming language paper about R

April 27, 2012
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An academic programming language paper about R

The R language has passed another milestone, a paper aimed at the academic programming language community (or at least one section of this community) has been written about it, Evaluating the Design of the R Language by Morandat, Hill, Osvald and Vitek. Hardly earth shattering news, but it may have some impact on how R

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LeaRning R

April 25, 2012
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If, like me, you're still an R novice, you'll no doubt find this post on Pairach Piboonrungroj's blog extremely helpful. Among other things, Pairach provides links to 20 40 "R tutorials". It's a really nice resource!H.T. to David Smith for posting about this on the Revolutions blog.© 2012, David E. Giles

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useR! 2012 Conference

April 25, 2012
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“Spatial data is, quite literally, everwhere” (Barry Rowlingson) this is so true! And because of that you guys will have the chance to take part in a great tutroial on using R for managing geospatial data, transforming, making maps and working with OGC standards. So visit this years useR! conference at Vanderbilt University; Nashville, Tennessee,

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Rmetrics financial engineering workshop

April 24, 2012
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For those looking for an in-depth workshop on financial engineering with R, look no further than the R/Rmetrics Workshop and Summer School held annually in beautiful Meielisalp, Switzerland. This is an intimate workshop limited to around 50 participants, and features tutorials from leading practitioners in finance with R. This year's workshop takes plase June 24-28. You can find the...

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PhD week 7: Plotting and NIR spectroscopy

April 19, 2012
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PhD week 7: Plotting and NIR spectroscopy

Near-infrared (NIR) spectroscopy is a technique that measures the amount of heat absorbed or emitted by certain materials. It is used in a variety of applications, but in the agricultural world, it is often used to determine the quality and composition of mixed materials such as stock forage. It uses electromagnetic radiation...

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