I wrote a quick (and very dirty) R script for creating a comparison cloud and a commonality cloud for President Obama’s 2011 and 2012 State of the Union speeches*. The cloud on the left shows words that have different frequencies between the two spe...
(This article was first published on R-statistics blog » R, and kindly contributed to R-bloggers) The followings introductory post is intended for new users of R. It deals with interactive visualization using R through the iplots package. This is a guest article by Dr. Robert I. Kabacoff, the founder of (one of) the first online...
Some days ago the journal Renewable Energy published my last paper “Cost of energy and mutual shadows in a …
I wrote a little function to make a personalized map of who follows you or who you follow on Twitter. The idea for this function was inspired by some plots I discussed in a previous post. I also found a lot of really useful code over at flowing data he...
I came across an interesting SAS macro that was used for visualizing log odds relationships of data. This type of chart is helpful for visualizing the relationship between a binary dependent variable and a continuous independent variable. I...
corrplot 0.60 is on CRAN now, here are some example graphs:
Some time ago I posted a question in stackoverflow to learn how to produce a multipage SVG file. This is easy if you want a PDF: But the PDF file is not really useful to get something similar to a slideshow. There wasn’t a definitive answer but the best comment was: “to make R...
A Bernoulli process is a sequence of Bernoulli trials (the realization of n binary random variables), taking two values (0/1, Heads/Tails, Boy/Girl, etc…). It is often used in teaching introductory probability/statistics classes about the binomial distribution. When visualizing a Bernoulli process, it is common to use a binary tree diagram in order to show...
In general, the standard practice for correcting for population stratification in genetic studies is to use principal components analysis (PCA) to categorize samples along different ethnic axes. Price et al. published on this in 20...
I've been getting a lot of questions about the method used to map the hotspots in the seasonal drunk-driving risk maps. It uses the GAM (Geographical Analysis Machine), a way of detecting spatial clusters from two data inputs: the data of interes...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
