Tag Archives: CSV

Using R — A Script Introduction to R

Posted on October 17, 2012 by Jonathan Callahan
This entry is part 3 of 22 in the series Using R

To many people, R is like the Everglades. They’ve heard of it, they know it’s big and has amazing treasures deep inside. Articles in the media can make it look irresistible. But after a personal or even second hand experience …   read more …

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Data Structures — Tabular vs. Relational

Posted on October 22, 2010 by Jonathan Callahan

With enough effort it is possible to fit a square peg into a round hole.  But we have all learned — sometimes more than once — that it is much easier if peg and hole have the same shape. Data …   read more …

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Data Volumes

Posted on April 9, 2010 by Jonathan Callahan

Despite what they say, size does matter. Successful data management is all about finding the proper tools and formats for dealing with your data.  There is no one-size-fits-all solution.  And the very first question you should be asking yourself is: …   read more …

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Zero vs. Missing

Posted on February 25, 2010 by Jonathan Callahan

On the left we have zero, our integer measure of nothingness.  On the right we have missing value, aka N/A, aka NA, our signal that the value of a datapoint is unknown. Everyone who deals with data has to deal …   read more …

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Ten UNIX commands every data manager should know

Posted on September 17, 2009 by Jonathan Callahan

Working with data from varied sources can be frustrating — some data will be in CSV format; some in XML; some available as HTML pages; other data as relational databases or MS Excel spreadsheets. This post will cover the UNIX …   read more …

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