David Rosenman

I'm a software engineer and data scientist with a B.S. in Physics from The College of New Jersey, and I'm currently working toward an M.S. in Computer Science at Georgia Tech, specializing in artificial intelligence. By day I'm an Infrastructure and Operations Engineer at Optum.

I started my career in R at the New Jersey Department of Environmental Protection, where I was the lead programmer on the state's 2016 Integrated Water Quality Assessment Report and built the R application that downloaded and assessed the water quality data behind it. Since then most of my work has combined SQL Server with R and Python.

I'm the author of orbitr, an R package for simulating gravity — planets, binary stars, and the N-body problem — and of other open-source packages on CRAN and PyPI. Orbital Mechanics with R is the book that explains what the package does and why: the physics behind every function, derived and then checked against the simulation. The full text is free to read at book.orbit-r.com; this edition is for readers who want a copy of their own.

I live in Newtown, Pennsylvania, with my wife, Kerry.

Package documentation: orbit-r.com

Code: github.com/DRosenman

Everything else: daverosenman.com.