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Ask me anything about your lessons or your code.
“What is a port?” · “Why is my code erroring?”
Ask me anything about your lessons or your code.
“What is a port?” · “Why is my code erroring?”
Start from what is a coordinate system and build real map-and-data skills: the vector and raster models, projections, spatial data formats, and the core analysis moves like buffers, overlays, and spatial joins.
What GIS Is and Why It Matters
GIS Foundations
Vector and Raster: Two Ways to Store the World
GIS Foundations
Coordinate Reference Systems and the Shape of the Earth
GIS Foundations
Why Every Flat Map Lies
GIS Foundations
The Data Table Behind the Map
GIS Foundations
Scale, Resolution, and Trusting Your Data
GIS Foundations
Vector Formats: Shapefile, GeoJSON, and GeoPackage
Spatial Data and Formats
GeoJSON: The Web-Native Spatial Format
Spatial Data and Formats
Where to Get Real Geospatial Data
Spatial Data and Formats
How Geometries Relate: Topology and Predicates
Spatial Analysis
Buffers and Proximity: What Is Near What
Spatial Analysis
Overlay: Clip, Intersect, Union, and Difference
Spatial Analysis
Spatial Joins: Combining Data by Location
Spatial Analysis