690 search results for "sql"

Read Excel files from R

July 21, 2013
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Many people still save their data into Microsoft Excel files. This is an unhappy choice for many reasons but many was already written about this topic. Furthermore, unfortunately Excel become a de facto standard in many business environment and this … Continue reading →

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An excellent introduction to MapReduce and Hadoop

July 19, 2013
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An excellent introduction to MapReduce and Hadoop

by Yanchang Zhao, RDataMining.com The lectures in week 3 of a free online course Introduction to Data Science give an excellent introduction to MapReduce and Hadoop, and demonstrate with examples how to use MapReduce to do various tasks, such as, … Continue reading →

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Oracle R Connector for Hadoop 2.2.0 released

July 19, 2013
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Oracle R Connector for Hadoop 2.2.0 is now available for download. The Oracle R Connector for Hadoop 2.x series has introduced numerous enhancements, which are highlighted in this article and summarized as follows:  ORCH 2.0.0  ORCH 2.1.0  ORCH...

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Connect R with Myrrix – Mahout & Cloudera’s real-time, scalable recommender system

Connect R with Myrrix – Mahout & Cloudera’s real-time, scalable recommender system

(This article was first published on BNOSAC - Belgium Network of Open Source Analytical Consultants, and kindly contributed to R-bloggers) Myrrix is probably more known by java developers and users of Mahout than R users. This is because most of the times java and R developers live in a different community.  If you go to the website of Myrrix...

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Read GRASS raster directly into R?

July 15, 2013
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Read GRASS raster directly into R?

There was always the issue which bugged me: Why do I have to go through an intermediate format on disk when I want to import a GRASS raster layer into R? At the moment, when I use readRAST6(), the raster layer is exported from GRASS into an intermediate formate (I don’t recall which format it

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analyze the surveillance epidemiology and end results (seer) with r and monetdb

July 15, 2013
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the surveillance epidemiology and end results program is the aggregation of all cancer registry statistics in the united states.  created by congressional decree, seer has captured a nationally-representative quarter of american cancer incidence s...

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Throw some, throw some STATS on that map…(Part 1)

July 12, 2013
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Throw some, throw some STATS on that map…(Part 1)

R is a very powerful and free (and fun) software package that allows you to do, pretty much anything you could ever want. Someone told me that there’s even code that allows you to order pizza (spoiler alert: you actually cannot order pizza using R :( ). But if you’re not hungry, the statistical capabilities

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A Rough Guide to Data Science

July 9, 2013
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A Rough Guide to Data Science

If Big Data was last year's buzzword, Data Science may reach the same level of hype this year. There's no shortage of discussion about the high demand for data scientists, the term's usefulness as a designation, and even declarations of its "sexiness" as a career. And as with many terms that reach a critical mass on social media, data...

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analyze the united states decennial census public use microdata sample (pums) with r and monetdb

July 1, 2013
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during his tenure as secretary of state, thomas jefferson oversaw the first american census way back in 1790.  some of my countrymen express pride that we're the oldest democracy, but my heart swells with the knowledge that we've got the world's o...

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?help! Instant R search on Rdocumentation.org

June 26, 2013
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?help! Instant R search on Rdocumentation.org

Last week, I was working on an educational R project when I needed to consult the help files of different R packages and functions online. After doing some Google searches, it appeared to me that finding an easy-to-use tool was not as simple as I had expected. The closest that I got, were the websites

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