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Measurements and Analysis Using GIS
Calculating the location, height, area, perimeter, volume, slope, aspect, dis-
tance between two points, line of sight between two points on the Earths
surface etc. are some of the most fundamental and common computations
in GIS. Advanced GIS often computes the azimuth and elevation of celestial
objects from the Earth’s surface and the almanac data pertaining to every
location on the Earth for a given date and time. Sometimes an application-
specific GIS can compute path profile between source and destination, crest
clearance of a projectile, elevation profile of a terrain cut and radio line of
sight between source ...