Geospatial Data & Maps

Types of Map Projections in Cartography

Equal-Area: Maintains area proportions

Conformal: Preserves angles and shapes.

Equidistant: Maintains accurate distances from a specific point.

Types of Geospatial Data

Spatial Data: describe the absolute and relative location of geographic features
Attribute Data: Describes characteristics of spatial features.

Types of Geospatial Entities

Point: Cities, landmarks

Line: Roads, rivers

Polygon: Countries, lakes

Common Map Types in Geovisualization

Choropleth Map:Uses color to represent values within areas

Heat map: Shows data density using color gradients.

Contour map: Displays lines connecting points of equal value

glyph map: Uses symbols or shapes to represent data points.