Slide 8
Slide 8 text
Spatial References
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Coordinate system (cartesian)
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Units (degrees, meters)
● Main axis (equator, Greenwich)
● Ellipsoid, geoid (WGS 84)
● Conical, cylindrical, conformal, ...
● …
Store WGS 84
→ (GPS, srid=4326)
Display →Mercator (Google Maps, srid=3857)