who is the highlights of distribution of maps
Answers
Explanation:
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Answer:
Explanation:
One-to-one
Dot-density map and dot-distribution maps are the same thing. These type of maps can show the population of people in a country, city, state, etc. In a one-to-one dot map, each dot represents one single recording of a phenomenon. Because the location of the dot corresponds to only one piece of data, care must be taken to ensure that the dot is represented in its correct spatial location. Inaccuracies in the location of the dot can misrepresent the data being mapped. Various methods exist for determining the exact spatial location of a single point, including geocoding.[citation needed]
One-to-many
Acres of Harvested Wheat in Illinois in 2012
In a one-to-many, or dot-density map, each dot on the map represents more than one of the phenomena being mapped. The number of data represented by each dot is determined by the map author and may be the product of data availability. Some data, such as the addresses of cancer patients, may not be available for mapping due to restrictions on access to individuals' medical records.[citation needed]
In one-to-many dot distribution maps, the reader must be careful not to interpret the dots as actual locations, as the dots represent aggregate data and are often arbitrarily placed on a map. Methods of dot placement include by areal unit centroid, random dispersement, and uniform (evenly spaced) placement, among others.[citation needed]
Historical examples of dot distribution maps
Carte philosophique figurant la population de la France
Carte Philosophique figurant la Population de la France
The first dot distribution map was created by a Franciscan friar, Armand Joseph Frère de Montizon (1788–????).[2] It is a relatively simple map of population by département (administrative district) in France and is one of the first known examples of a demographic map for the country.[3] Each dot represents 10,000 individuals. The dots are spaced in even rows, the distance between which determined by the population of the department. A table in the map lists the departments by name, population, and prefectural city. The departments were numbered on the map to correspond to the table. The regular spacing of the dots in the map produces a visual display of population density, as higher population levels within an administrative border exhibit a closer, denser pattern of dots. Since the dots are evenly spaced, it is evident that they do not represent the actual locations of where people live within a department. This is an example of an ecological fallacy, where a value for an area generalizes all within that area to exhibit that value.[4]
Although Montizon's map was the first thematic dot map published, it did not garner the author fame. Instead, his innovation had no effect on practice for nearly 30 years until the dot distribution map was "reinvented" for map by a Swedish Army officer, published in 1859.[4] This map was authored by Thure Alexander von Mentzer and shows the population distribution for the Scandinavian region. No known reproductions of this map exist.