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The Universal Transverse Mercator (UTM) is a map projection system for assigning coordinates to locations on the surface of the Earth. Like the traditional method of latitude and longitude , it is a horizontal position representation , which means it ignores altitude and treats the earth surface as a perfect ellipsoid .
iOS 12 was introduced by Craig Federighi at the Apple Worldwide Developers Conference keynote address on June 4, 2018. [3] The first developer beta version was released after the keynote presentation, [4] with the first public beta released on June 25, 2018. [5]
Thomas–UTM: The λ expansions of Krüger were also confirmed by Paul Thomas in 1952: [12] they are readily available in Snyder. [13] His projection formulae, completely equivalent to those presented by Redfearn, were adopted by the United States Defence Mapping Agency as the basis for the UTM . [ 14 ]
utm_source Identifies which site sent the traffic, and is a required parameter. utm_source=google: utm_medium Identifies what type of link was used, such as email or pay-per-click advertising. utm_medium=ppc: utm_campaign Identifies a specific product promotion or strategic campaign. utm_campaign=spring_sale: utm_term Identifies search terms.
A projected coordinate system – also called a projected coordinate reference system, planar coordinate system, or grid reference system – is a type of spatial reference system that represents locations on Earth using Cartesian coordinates (x, y) on a planar surface created by a particular map projection. [1]
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