YelpViz
An R package for Yelp business analytics and maps.
01The problem
Yelp hides location patterns in long lists — a map shows where a business works at a glance.
02Approach & architecture
Built a reusable R package wrapping the Yelp API: choropleth maps, density heatmaps, and rating comparisons, with CI and 88% test coverage.
03Results & impact
Measured What the work shows
An R package installable with devtools::install_github or from a .tar.gz, with choropleth and heatmap functions that work on any dataset with business locations.
Expected Possible impact, not yet measured
Intended for site analysis in retail, real estate or delivery.
04Lessons
Test coverage and CI matter as much as the code itself for a package you expect anyone to install. The biggest design call was making interactive Plotly the default rather than static ggplot2 — it doubles the value of the analytical functions because the user can drill into specific points without re-running the analysis.