- help to locate places
- usually deal with a time period, either current or historical
- some deal with thematic or subject info
- current events
- recreation
- business
- genealogy
- military history
- place name changes
- finding details of a local area such as streets, public buildings, churches, schools
- look at growth or decline of an area
- look at topography, drainage systems, woodland cover, and other physical and cultural features
- Geographical: show important geographical or political features of the world.
- Historical: show boundary changes, military campaigns, or early exploration.
- Thematic: emphasize a specific subject or region, include national, population and geographical atlases
- locate places, countries
- understand historical development of a country or region
- look at a specific subject or theme in more detail e.g. world population
- Locational: provide info for precise location of feature either by atlas page and grid index or by latitude and longitude
- Descriptive: locational info plus description e.g. brief history, population, altitude, commodities, etc.
- Find where a specific city, mountain, river, or other physical feature is located
- Find additional info such as population or perhaps leading economic characteristics of an area.
- inform travelers about what to see, where to stay, where to eat and how to get there
- provides a lot of detail about specific places e.g. museums, restaurants, art galleries, historic attractions, churches, etc.
- Scale: ratio of distance on map to actual distance in real world
- Projection: method used to transfer a curved section of the earth to a flat, two dimensional surface.
- The smaller the right hand number, the larger the scale of the map 1:75,000 is a larger scale map than 1:600,000 which is a small scale map.
- The larger the scale, the smaller the area the map can cover, but the greater amount of detail that it can include about that area.
- Scales given in numbers called representative fractions (RF):
1:100,000 means one unit of distance on the map equals 100,000 of the same unit on the surface being portrayed, e.g. the earth - Small-scale maps are used for maps of wide areas where not much detail is required. For example, a small-scale map of Europe (e.g. 1:12,000,000) would fit on a single page (typically 8 inches by 11 inches).
- A medium-scale map of San Francisco (e.g. 1:300,000) would fit on a single page.
- Large-scale means a more detailed map. They are used in large applications where detailed local maps are required. A large-scale map of a small town (e.g. 1:24,000) would fit on a single page.
- Mercator projection shows correct shape of land masses but distorts their size.
- Google’s Interrupted Homolosine projection allows fairly faithful representation of both the shape and size of large land masses but distorts and interrupts the ocean area.
Goode's interrupted Homolosine
Colour and symbols
Colour used for: political boundaries, contour lines, water, roads, railways, buildings, highways, vegetation, etc.
Symbols: amount and type controlled by scale of map
Map should be legible and easy to interpret. It should not be too cluttered.
Publisher/Authority
- national mapping authority
- Rand McNally, C.S. Hammond, National Geographic Society, John Bartholomew, Oxford University Press, Michelin
- Does index include all places and features shown on maps?
- Approx. how many entries are included?
- Single alphabet at back or separate indexes for each map or series of maps?
- Does index effectively refer you to right map and right point on map?
- How are variant place-names treated, and is there adequate cross-referencing?
- Does index offer any info beyond place-names and map references e.g. pronunciations, population stats?
