A Cartogram is a map that uses a statistical technique to represent geographical information. It is a graphical representation of data that uses area or distance to represent the values of a particular variable. Cartograms are used to visualize the spatial distribution of data in a more meaningful way than traditional maps. They
A cartogram is a thematic map of a set of features, in which their geographic size is altered to be directly proportional to a selected variable, such as travel time, population, or gross national income. Geographic space itself is thus warped, sometimes extremely, in order to visualize the distribution of the variable. It is one of the most abstract types of map; in fact, som be called diagrams. They are primarily used to display emphasis and for analysis as nomographs.