Thomas Pedersen
Data Scientist
Copenhagen, Capital Region of Denmark
Summary
🤩
Rockstar
Top expert inR Data Science and Visualization
Thomas Pedersen is a Copenhagen-based data scientist with 13 years of software engineering experience, specializing in data visualization tooling for the R ecosystem. He is the maker behind widely used visualization libraries and has driven core backend features in flagship projects like ggplot2, gganimate and patchwork, contributing animation transitions, layout composition and rendering optimizations. His work spans full-stack package development—implementing novel graph layouts, spatial-to-graphics conversions and performance improvements—demonstrating both low-level numeric care and user-facing UI design. Equally comfortable refactoring core systems or designing intuitive plotting APIs, he blends empirical rigor with a maker’s focus on practical, reproducible visual analytics. An often-overlooked strength is his knack for turning geometric and matrix-level optimizations into smoother, more expressive plotting primitives that scale to real-world spatial and network data.
14 years of coding experience
English, Danish, French
Github Skills (26)
data-visualizations10
algorithms10
visualization10
animation10
r10
data-manipulation10
data-visualisation10
spatial-data10
vector10
geometry-processing10
data-visualization10
r-programming10
ggplot10
visualizations10
api-design9
Programming languages (16)
Github contributions (5)
thomasp85/gganimate
Oct 2017 - Sep 2022
A Grammar of Animated Graphics
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 releases, 373 commits, 34 PRs in 4 years 11 months
Contributions summary:Thomas primarily contributed to the core functionality of the gganimate package. Their commits demonstrate a focus on implementing transition and view features, including the `transition_states`, `transition_layers`, and `view_step` functions. They also worked on integrating new capabilities such as enter/exit effects, frame variable handling, and animation-related rendering options, all of which point to a significant role in enhancing the animation creation process.
graphicrstatsggplot2animationtransition
thomasp85/ggraph
Jan 2016 - Oct 2022
Grammar of Graph Graphics
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:12 releases, 7 reviews, 369 commits in 6 years 10 months
Contributions summary:Thomas implemented new layout algorithms, specifically for tree and graph visualization. They added code for the arc, elbow, bend and diagonal edge layouts, including both base implementations and their "0" and "2" variants. Furthermore, the user contributed to building the foundation for a tree-based graph visualisation framework through the addition of treemap and circlepack layouts.
graphgraphicgraph-visualizationggplot2visualization
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