716 search results for "SQL"

Top Songs by Artist on CD102.5 in 2013

December 26, 2013
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Top Songs by Artist on CD102.5 in 2013

In a previous post, I showed you how to scrape playlist data from Columbus, OH alternative rock station CD102.5. Since it's the end of the year and best-of lists are all the fad, I thought I would share the most popular songs and artists of the year, ...

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24 Days of R: Day 17

December 18, 2013
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24 Days of R: Day 17

I couldn't manage to find time yesterday, so today I'm going to try and catch up with two posts. In the first, I'm going to talk about a package I've been gradually working on over the course of the year. After all, what's Christmas if you don't get a package? I do quite a lot

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Review: Kölner R Meeting 13 December 2013

December 17, 2013
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Review: Kölner R Meeting 13 December 2013

Last week's Cologne R user group meeting was the best attended so far. Well, we had a great line up indeed. Matt Dowle came over from London to give an introduction to the data.table package. He was joined by his collaborator Arun Srinivasan, who is based in Cologne. Their talk was followed by Thomas Rahlf on Datendesign...

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24 Days of R: Day 13

December 13, 2013
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24 Days of R: Day 13

In this post, I'll look at a very quick way to look at the relationships in a database. I had a bit of fun with my first network graph and plotting the connections between tables and views seems like a natural extension. Here, I'm going to create a bare bones insurance database. We have a

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24 Days of R: Day 10

December 10, 2013
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24 Days of R: Day 10

How often is someone nominated for an academy award? Who has been nominated most often? Is there a difference between leading and supporting roles? Important questions. To answer them, I'm making use of a list of academy award nominees and winners. I've obtained the data from aggdata.com which has a few sets of free data.

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Creating custom CDF for Affy chips in R / Bioconductor

Creating custom CDF for Affy chips in R / Bioconductor What? For those who don't know, CDF files are chip definition format files that define which probes belong to which probesets, and are necessary to use any of the standard summarization methods such as RMA, and others. Why? Because we can, and because custom definitions have been shown to be quite useful. See...

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Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 2] [Update]

December 9, 2013
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Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 2] [Update]

Hello everybody, in my first tutorial I described how you can build your own MongoDB and use a JAVA program to mine Twitter either via the search function and a loop or via the Streaming API. But till now you just have your tweets stores in a Database and we couldn´t get any insight in our …

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analyze the program for international student assessment (pisa) with r and monetdb

December 9, 2013
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the authoritative source for evaluating educational achievement across nations, the program(me) for international student assessment ranks the math, science, and reading skills of 15-year-olds in more than sixty countries.  coordinated by the orga...

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R – Analyze any data frame in Saiku

December 4, 2013
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R – Analyze any data frame in Saiku

In my previous article I have shown how R can be used to analyze PostgreSQL tables in Saiku using dynamically generated OLAP cubes. Today I will show you how you can analyze any R data frame in Saiku. WIth Saiku you can easily create excel-like pivot t...

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Using R to replicate common SPSS multiple regression output

December 4, 2013
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Using R to replicate common SPSS multiple regression output

(This article was first published on Jeromy Anglim's Blog: Psychology and Statistics, and kindly contributed to R-bloggers) The following post replicates some of the standard output you might get from a multiple regression analysis in SPSS. A copy of the code in RMarkdown format is available on github. The post was motivated by this previous post that discussed using...

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