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Method to optimize the visualization of a map's projection based on data and tasks

  • US 9,679,399 B2
  • Filed: 08/10/2016
  • Issued: 06/13/2017
  • Est. Priority Date: 01/06/2015
  • Status: Expired due to Fees
First Claim
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1. A system for determining and generating an optimal map projection for a geographical extent, the system comprising:

  • a computer system comprising;

    one or more computer processors, one or more computer-readable storage media, and program instructions stored on one or more of the computer-readablestorage media for execution by at least one of the one or more processors, the program instructions, comprising;

    accepting a user request for a map for a geographical extent for display using a computer;

    determining a set of elements that are contained within the geographical extent, using the computer;

    building a list of shape files for the elements, each shape file being constructed based on a map projection;

    ranking the shape files by comparing an area of the shape file to a geographical area of the shape file'"'"'s associated element;

    re-rank the shape files by comparing a great circle distance between a center of the area of the shape file and a geographical center of the shape file'"'"'s associated element;

    re-rank the shape files by comparing azimuth errors for a set of contained points in the shape associated with each of the shape files; and

    selecting a map projection that minimizes differences in area and distance as compared to the geographical extent.

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