This post describes an interesting string-matching problem that I faced when tracking students’ attendance, using google forms, in one of my courses.

Using wkhtmltopdf to convert HTML files into PDF format.

This week (June 7-10) I was able to fulfill a promise made long ago to my dearest friend and colleague Dr. Lucas Lopez Segovia: to visit the Division of Ciencias Basicas (DACB) at the Universidad Juarez Autonoma de Tabasco (UJAT).

Using R to plot a football-shaped scatter diagram.

Sharing the shiny apps for my “STAT 2: Introduction to Statistics” course at UC Berkeley.

Using R to plot colored jittery text, just for fun.

Rtist now being feature in the new R graph gallery.

Using R to solve the crocodile math problem from the Scottish **Higher Maths** exam of May 2015.

This is probably one of my shortest posts, but this doesn’t mean that it is useless.

As some of you know, one of my favorite research topics has to do with Partial Least Squares (PLS) methods. Along with my interest in theoretical considerations, methodological aspects, practical applications, and software tools, one of my long standing obsessions has been related to the historical side of PLS methods.