[{"n": "Map symbol", "u": "/e/maps-and-their-symbols/map-symbol/", "s": "Graphical devices representing real-world features on maps."}, {"n": "Choropleth map", "u": "/e/maps-and-their-symbols/choropleth-map/", "s": "Thematic map using color to show data by area."}, {"n": "Dot distribution map", "u": "/e/maps-and-their-symbols/dot-distribution-map/", "s": "A thematic map using point symbols to visualize geographic distribution and density of phenomena."}, {"n": "Flow map", "u": "/e/maps-and-their-symbols/flow-map/", "s": "Maps that show movement between locations using linear symbols."}, {"n": "Heat map", "u": "/e/maps-and-their-symbols/heat-map/", "s": "A two-dimensional data visualization technique that represents magnitude as color, from 1873 shaded matrices t"}, {"n": "Proportional symbol map", "u": "/e/maps-and-their-symbols/proportional-symbol-map/", "s": "Thematic map using symbol size to represent quantitative data."}, {"n": "Thematic map", "u": "/e/maps-and-their-symbols/thematic-map/", "s": "Maps that visualize the geographic pattern of a specific theme."}, {"n": "Topographic map", "u": "/e/maps-and-their-symbols/topographic-map/", "s": "Large-scale map showing relief via contour lines."}, {"n": "Weather map", "u": "/e/maps-and-their-symbols/weather-map/", "s": "Maps displaying meteorological features for research and forecasting."}, {"n": "Nautical chart", "u": "/e/maps-and-their-symbols/nautical-chart/", "s": "Graphic representation of sea regions essential for safe navigation."}, {"n": "World map", "u": "/e/maps-and-their-symbols/world-map/", "s": "A map of most or all of Earth's surface."}, {"n": "Gazetteer", "u": "/e/maps-and-their-symbols/gazetteer/", "s": "A geographical index or dictionary used with maps."}, {"n": "Scale (geography)", "u": "/e/maps-and-their-symbols/scale-geography/", "s": "Scale determines observation detail and conclusions in geography."}, {"n": "Cartography", "u": "/e/maps-and-their-symbols/cartography/", "s": "The study and practice of making and using maps."}, {"n": "Computer cartography", "u": "/e/maps-and-their-symbols/computer-cartography/", "s": "Computer cartography replaced traditional pen-and-paper mapmaking."}, {"n": "Geovisualization", "u": "/e/maps-and-their-symbols/geovisualization/", "s": "Interactive visualization tools for geographic data exploration and decision-making."}, {"n": "Azimuthal equidistant projection", "u": "/e/maps-and-their-symbols/azimuthal-equidistant-projection/", "s": "Map projection preserving correct distances and azimuths from a center point."}, {"n": "Gall–Peters projection", "u": "/e/maps-and-their-symbols/gall-peters-projection/", "s": "An equal-area map projection at the center of political controversy."}, {"n": "Map projection", "u": "/e/maps-and-their-symbols/map-projection/", "s": "Mathematical transformation of a globe's surface onto a plane."}, {"n": "Geographic coordinate system", "u": "/e/maps-and-their-symbols/geographic-coordinate-system/", "s": "A spherical system for measuring positions on Earth using angles."}, {"n": "Great circle", "u": "/e/maps-and-their-symbols/great-circle/", "s": "The largest circle on a sphere, analogous to a straight line."}, {"n": "Azimuth", "u": "/e/maps-and-their-symbols/azimuth/", "s": "Horizontal angle from north used in navigation and astronomy."}, {"n": "Cardinal direction", "u": "/e/maps-and-their-symbols/cardinal-direction/", "s": "Four main compass directions used for navigation and orientation."}, {"n": "North", "u": "/e/maps-and-their-symbols/north/", "s": "One of the four cardinal directions, opposite south."}, {"n": "South", "u": "/e/maps-and-their-symbols/south/", "s": "One of the four cardinal directions, opposite north."}, {"n": "East", "u": "/e/maps-and-their-symbols/east/", "s": "Cardinal direction of sunrise and Earth's rotation."}, {"n": "West", "u": "/e/maps-and-their-symbols/west/", "s": "One of four cardinal directions, opposite east, where the Sun sets."}]