Post by Deleted on Apr 27, 2015 17:34:35 GMT
How to choose a projection - geo.hunter.cuny.edu
Maps that preserve scale
No map provides true-to-scale distances for any measurement you might make. The Azimuthal Equidistant projection preserves true scale from a single specified point on the projection to all other points on the map. Possible uses for this property include:
· Maps of airline distances from a single city to several other cities
· Seismic maps showing distances from the epicenter of an earthquake
· Maps used to calculate costs or charges based on straight-line distance from a source
· Maps used to calculate ranges; for example, the cruising ranges of airplanes or the habitats of animal species
The Two-Point Equidistant projection preserves true scale from two specified points on the projection to all other points on the map. This projection could be used to determine the distance of a ship at sea from the start and end of a voyage.
No map provides true-to-scale distances for any measurement you might make. The Azimuthal Equidistant projection preserves true scale from a single specified point on the projection to all other points on the map. Possible uses for this property include:
· Maps of airline distances from a single city to several other cities
· Seismic maps showing distances from the epicenter of an earthquake
· Maps used to calculate costs or charges based on straight-line distance from a source
· Maps used to calculate ranges; for example, the cruising ranges of airplanes or the habitats of animal species
The Two-Point Equidistant projection preserves true scale from two specified points on the projection to all other points on the map. This projection could be used to determine the distance of a ship at sea from the start and end of a voyage.
