Blog Archives

A Simple Introduction to the Graphing Philosophy of ggplot2

March 28, 2014
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A Simple Introduction to the Graphing Philosophy of ggplot2

Blog post: a very basic introduction to building data plots using ggplot2 in R. #Rstats

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Normality and Testing for Normality

March 21, 2014
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Normality and Testing for Normality

How do we test for normality, and are normality tests really sensitive in the tails?

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Rewriting plot.qcc using ggplot2 and grid

March 3, 2014
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Rewriting plot.qcc using ggplot2 and grid

A new ggplot2-based implementation of control charts for the #RStats package qcc, and some lessons learned along the way.

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Individuals and Moving Range Charts in R

March 1, 2014
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Individuals and Moving Range Charts in R

Individuals and moving range charts, abbreviated as ImR or XmR charts, are an important tool for keeping a wide range of business and industrial processes in the zone of economic production, where a process produces the maximum value at the minimum costs. While there are many commercial applications that will produce such charts, one of

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Is there a Market for Premium R Packages?

November 19, 2010
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Is there a Market for Premium R Packages?

Nathan Yau, of the excellent FlowingData blog, recently asked on his Twitter stream: I wonder if there’s a market for premium R packages, like there is for say, @wordpress themes and plugins There are some great packages available for R, all of which are currently free. I think it would be great if authors like

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R Function Reference

September 15, 2010
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R Function Reference

The R Function Reference is a mind map that I've created to help novice and intermediate R users perform common tasks and analyses.

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Graphing Highly Skewed Data

August 30, 2010
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Graphing Highly Skewed Data

Graphing data with a few outliers is challenging, and some solutions are better than others. Here is a comparison of the alternatives.

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