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Median Locations

Using the "Median Location" tool it is possible to locate n medians in a network, minimizing the sum of all distances from each demanding point to the closest median.

Suppose there are some location possibilities for placing a new school. "What is the best place such that the distance for the students houses is minimized?".

In this initial version the problem is characterized by selecting the number of medians n, from a total number of objects, and optimizing the summation of the distances from each object to the closest median.


Executing a Location Analysis:

  • select in the Control Panel an IL from the Network, Cadastral or Thematic Category (this IL must be composed only by points).
  • In the main menu click on Network, Cadastral or Thematic and next, type the options presented and select "Medians Localization...". The window "Location Analysis" is presented;
  • the current Infolayer is presented in the text;
  • type the number of medians ;
  • enter the object category;
  • select in the "Distance Parameter" list, if the distance has to be linear or network. If "linear", consider the linear distance between the point and the median. If "network", the median is selected such that the distance to be traveled from the object position to the median is minimized.
  • click on Execute.

See also:

www.lac.inpe.br\~lorena\ArsigIndex.html
Vector edition