Data scientist, simulation-focused builder, and systems-oriented researcher.
This profile serves as a portfolio landing page for recruiters, academics, collaborators, and visitors who want a concise view of selected work, technical tools, and ongoing exploratory projects.
- Recruiters: review the selected projects and technical skills sections.
- Academics and collaborators: review the simulation, systems, and research-oriented projects.
- Visitors and learners: review the reference portfolio and educational tools.
- LinkedIn: Robert Lehr
- Email: robert.z.lehr@gmail.com
- Feedback Form: Share Your Thoughts
- ANNA: Ask ANNA
Python, Pandas, Scikit-Learn, JavaScript, PostgreSQL, Tableau, R, Excel VBA, data visualization, exploratory analysis, machine learning, simulation concepts, and technical tool development.
- Molecular Motion Simulation — browser-based particle-to-field simulation proof of concept.
- Kestrel WBGT Demo — applied thermal and environmental data demonstration work.
- MDP Tool — decision-support and modeling-oriented prototype.
- Utility Assessment of Shade at Signalized Intersections — infrastructure and urban systems project framing.
- Reference Application ISO Concepts — concept development around structured reasoning and technical mapping.
- Data Science Educational Portfolio — portfolio hub for analysis, visualization, database, and machine learning projects.
- NYC Citi Bike Insights — business intelligence and data visualization project.
- Traffic Crime Correlations — exploratory analysis of transportation and crime data.
- Visualizing the Great Freeze Texas Energy Prices — Python-based analysis and visualization project.
- Geospatial Earthquake Visualization — front-end geospatial visualization work.
The reference portfolio collects projects originally developed through structured coursework and independent extension work across:
- machine learning
- Python programming
- statistics
- SQL and databases
- front-end visualization
- business intelligence tools
- spreadsheet-based analysis
- simulation and particle-to-field visualization
- systems thinking and decision support
- sustainability and infrastructure-oriented analysis
- educational tools for technical understanding
- interactive browser-based prototypes
Reference and cheat sheet materials remain available here:
This page is intended to function as both a professional portfolio entry point and a structured overview of ongoing technical and research interests.