What are population Cartograms?
If we want to show where the world’s people are we need a population cartogram, a geographical presentation of the world where the size of the countries are not drawn according to the distribution of land, but according to the distribution of people.
What does the population cartogram show about the different countries?
A cartogram is a representation of a region that displays the size of an object in relation to an attribute rather than land area. The new cartogram displays the size of countries in relation to their population.
What is a cartogram map best used for?
Cartograms are used for thematic mapping. They are a particular class of map type where some aspect of the geometry of the map is modified to accommodate the problem caused by perceptually different geographies.
What do you mean by cartograms?
A cartogram (also called a value-area map or an anamorphic map, the latter common among German-speakers) is a thematic map of a set of features (countries, provinces, etc.), in which their geographic size is altered to be directly proportional to a selected ratio-level variable, such as travel time, population, or GNP.
Who invented cartogram?
Émile Levasseur
The distinction of the first cartogram has been attributed to Émile Levasseur who produced cartograms for his economic geography related books in the 1860s and 1870s. Cartogram by Émile Levasseur published in “La France et ses Colonies“, originally published 1875.
Why are cartograms useful?
In this form, cartograms are used to display the relative time and distance within a chosen network. Though the exact time and distance from one location to another is distorted, these cartograms are still useful for moving about.
What do cartograms preserve?
Cartogram maps retain a partially accurate relative location and relative space, but the actual area of the individual polygons features are overrepresented or underrepresented based on the assigned values.
Why are Cartograms useful?
What do Cartograms preserve?
What does cartogram mean in geography?
A cartogram is a map in which the geometry of regions is distorted in order to convey the information of an alternate variable. Most of the time, a cartogram is also a choropleth map where regions are colored according to a numeric variable (not necessarily the one use to build the cartogram).