This past Saturday I led a data dive workshop for the Dallas R Users Group using Lahman’s baseball statistics. After providing a brief introduction to the Lahman R package and showing how to load the data and make some basic plots,... [Read more...]

A postdoctoral researcher asked me the other day to help him expand a vector of comma delimited values so he could do computations in R with it. I wrote an R function to solve the problem. Here is the before... [Read more...]

A few days ago a post doctoral researcher asked me if I could help him reorder the factor levels on a bar chart. The problem is that R automatically alphabetizes factor levels. I thought this would be fairly straight-forward but... [Read more...]

I have used R for about six years now. Over the years I’ve done the majority of my coding in Linux and so R has been nothing more than a terminal. I enjoy the simplicity and purity of the terminal but... [Read more...]

Have you ever exported an R plot as a PDF and tried to edit it further by importing the PDF into a vector graphics program like Adobe Illustrator or Inkscape? What typically happens is the points on the plot get... [Read more...]

The other day a question about faceting data came up in the Dallas R Users group (link of conversation). The hist() function is more efficient and uses less memory than the cut() function. Additionally, hist() returns an object that makes... [Read more...]