Overview

Interactive map visualizing Swedish pharmacy locations and accessibility metrics.

Key Features:

• Pharmacy locations across Sweden
• Vulnerability index measuring closure impact
• Population density by municipality
• Filtering by county, operator, and distance

Methodology:

Vulnerability index = Population served × Increased travel distance if pharmacy closes

Distances calculated using Vincenty ellipsoid (great-circle distance).

Data Sources

Pharmacy Locations

• Pipos (November 12, 2025)

Population Data

• Statistics Sweden (SCB) - 1km grid squares (2024)

Municipality Classifications

• Statistics Sweden (SCB) (2023)

Geographic Boundaries

• swemaps2 R package

Technical Details

Calculations:

• Distance method: Vincenty ellipsoid formula
• Map projection: WGS84 (EPSG:4326)
• Analysis tools: R (sf, geosphere, leaflet)

Data Processing:

• Nearest neighbor analysis for each pharmacy
• Population-weighted distance calculations
• Vulnerability metrics based on closure impact

About

Portfolio project demonstrating geospatial analysis and interactive visualization.

Technologies:

• R Shiny
• Leaflet.js mapping
• Geospatial analysis (sf, geosphere)

Last updated: November 2025