In 1736, the mathematician Leonhard Euler published a paper that arguably started the branch of mathematics known as topology. ![]() Why should GIS users care about topology? What are the advantages and disadvantages of storing polygon data in shapefiles rather than coverages? But ask these same folks about how topology is handled in shapefiles and the nodding heads give way to shrugging shoulders. ![]() ![]() ![]() When asked if topology is a key concept of GIS, most GIS users will nod their heads in agreement.
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