W02 - Coordinate Systems & Projections Flashcards
1
Q
how do the locations of map features and spatial features differ?
A
locations of map features are based on a plane coordinate system with x- and y-coordinates. the locations of spatial features are based on a geographic coordinate system with longitude and latitude values
a map projection bridges the 2 types of coordinate systems
2
Q
what is projection?
A
converting data sets from geographic coordinates to projected coordinates
3
Q
what is reprojection?
A
converting data sets from one system of projected coordinates to another system
4
Q
what is a geographic coordinate system
A
the location reference system for spatial features on the Earth’s surface, defined by longitude and latitude
