R package numbr 0.11.3 posted
R package numbr updated with the %==% (nearly equal) operator! devtools::install_github("tomhopper/numbr") [Read more...]
Articles by Thomas Hopper
Understanding Data
When analyzing data, you can start by thinking about how to classify the data you have according four main scales of measurement.
Introduction to R for Excel Users
When all you have is a hammer...Engineers and scientists, Excel is the hammer. #Rstats is a toolkit. Here's an intro. [Read more...]
Update to plot.qcc using ggplot2 and grid
plot.qcc updated for compatibility with ggplot2 v2.0. Use grid with qcc! [Read more...]
Explorable, multi-tabbed reports in R and Shiny
I take a prior example of multi-tabbed reports and rework it in R and Shiny, with some data visualization improvements.
Can We do Better than R-squared?
Blog post: R-squared can mislead us. Here are two related statistics for a better assessment of regression models.
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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
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
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
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 ... [Read more...]
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 ... [Read more...]
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. [Read more...]
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. [Read more...]
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