An overview of the history, principles, and importance of cartography in representing geographic information.
Introduction to Cartography
The art and science of map‑making
| Aspect | Description |
|---|---|
| Definition | The discipline concerned with the design, compilation, production, and study of maps. |
| Purpose | Communicates spatial information, supports navigation, planning, analysis, and storytelling. |
| Fields of Application | Geography, urban planning, environmental science, transportation, archaeology, disaster management, gaming, GIS, and more. |
| Element | Function | Typical Representation |
|---|---|---|
| Title | Identifies the map’s subject or purpose. | Bold text, often at the top. |
| Scale | Shows the relationship between map distance and real‑world distance. | Ratio (1:50,000), graphic bar, or verbal ( “1 inch = 1 mile”). |
| Legend (Key) | Explains symbols, colors, and line styles. | Box with symbol–description pairs. |
| North Arrow | Indicates orientation. | Arrow pointing to geographic or magnetic north. |
| Inset Map | Provides context or detail for a specific area. | Smaller map placed within the main map. |
| Source & Credits | Acknowledge data providers and cartographer. | Small text at the bottom or side. |
| Category | Primary Use | Example |
|---|---|---|
| Topographic | Shows natural and cultural features with contour lines. | Hiking maps, USGS quadrangles. |
| Thematic | Focuses on a specific theme or variable. | Population density, climate zones. |
| Reference (General‑purpose) | Provides a broad overview of geography. | Road atlases, world maps. |
| Navigational | Aids in route planning and travel. | Nautical charts, aeronautical maps. |
| Digital/Interactive | Allows user interaction, layering, and real‑time updates. | Google Maps, GIS web apps. |
| Projection | Geometry | Distortion Characteristics | Common Use |
|---|---|---|---|
| Mercator | Cylindrical | Preserves direction; distorts area at high latitudes. | Marine navigation, web maps. |
| Lambert Conformal Conic | Conic | Preserves shape; good for mid‑latitude regions. | Aeronautical charts, state maps. |
| Albers Equal‑Area Conic | Conic | Preserves area; useful for statistical maps. | Census maps. |
| Robinson | Pseudocylindrical | Balanced distortion (shape & area). | World maps in textbooks. |
| Polar Stereographic | Azimuthal | Preserves direction from the pole; distorts area away from pole. | Polar research maps. |
Key point: No projection can preserve all properties (area, shape, distance, direction) simultaneously; the choice depends on the map’s purpose.
Color
Line Styles
Point Symbols
Typography