GEOG 2480 Chapter Notes - Chapter 1: Spherical Coordinate System, Equipotential, Map Projection
28 Feb 2016
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Azimuthal: projection to a plane placed tangent to (just touching) the globe at a point. Census: systematic collection of information about the members of a population. Each of the persons, places, or things of interest in the study area are investigated. Choropleth mapping: mapping nominal, ordinal, and interval/ ratio-scaled data according to specialized areal administrative units such as watersheds, counties, states, or countries. Class: a collection of objects with the same attributes. Conformal: a map projection is conformal when at any point the scale is the same in every direction. No flat map can be both equal area and conformal at the same time. Data models: define how real world spatial features are represented in gis. Discrete geographic features: discrete geospatial data generally consists of points (eg. centroid of building), lines (eg. a road network), or polygons (eg. building), lines (eg. a road network), or polygons (eg. building footprints)
