A map showing geographically, by shades or curves, statistics of various kinds; a statistical map.

See topological map.

a map that distorts geographic boundaries based on different values of a variable

a special map that represents population numbers rather than territory

a stylized, as opposed to a realistic, representation of a specific geographic entity

a type of graphic that depicts attributes of geographic objects as the object's area

A type of thematic map in which the areas of spatial features are distorted in proportion to the value of an attribute.

A specific map projection that converts topographic areas into statistical proportions.

A standard Ordnance Survey or A-to-Z map shows areas of land in proportion to their physical area. Sometimes it may be useful to transform the map so that the areas, such as wards, are shown in proportion to, say their total population. Such a map is called a Cartogram.

An abstracted or simplified map for displaying quantitative data for which the base is normally not true to scale.

A cartogram is a map on which actual land area is substituted for another thematic mapping variable (such as time, cost, AIDS rates, or Gross National Product). It is sometimes referred to as an isodemographic map or a value-by-area map.