902 search results for "SQL"

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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