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 → [Read more...]

Often I find myself needing data sets to try functions and code out on or for teaching purposes.  I have a few stand-bys such as the mtcars and CO2 data sets in the base packages of R but sometimes I … Continue reading → [Read more...]

Science and engineering are built on theoretical models that are tested against measurements of ‘reality’. Until around 10 years ago there was very little software engineering ‘reality’ publicly available; companies rarely made source available and were generally unforthcoming about any bugs that had been discovered. What happened around 10 years ago was ... [Read more...]

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