The Back Story


November 21, 2021

About This Blog

“Open source means everyone can see my stupid mistakes. Version control means everyone can see every stupid mistake I’ve ever made.”

Karl Broman

The purpose of this blog is to provide a place to share my work in the area of Chemometrics & Spectroscopy using FOSS (free and open source) tools. Mostly I work with R but I use other tools as needed. Some areas I expect to write about from time-to-time include:

  • Major updates to R packages I author See here
  • Tutorials on how to accomplish certain tasks, generally inspired by user questions.
  • Developments in the chemometrics and spectroscopy community.
  • Occasionally, discussion of interesting papers.

About Your Host

You can reach me at Occasionally I am on Twitter.


I am currently a freelance R consultant with expertise in:

  • Development of R packages supporting science, especially spectroscopy and chemometrics
  • Spectroscopy (NMR, IR, UV-Vis etc)
  • Chemometrics
  • Exploratory Data Analysis
  • Data Visualizations
  • Data Management: organization, cleaning
  • Reproducible Research: the automated writing of research reports
  • R Training
  • Web page creation and maintenance
  • Familiar with R, markdown, LaTeX, html, css, JavaScript
  • Resume


I retired in June 2018 from DePauw University after 32 years of teaching chemistry and biochemistry. It was a good run. No regrets. Just time to do something else.

Karl Broman quote source