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Terminology By definition, the scale is the amount by which (infinitesimal) distances are multiplied by the projection. Whenever a tiny displacement of d meters on the earth is associated with a displacement of d/s meters on the map, the scale is written as 1:s. It may depend on the direction of the displacement. The scale factor compares the scale at ...


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1. Degrees to Radians: convert decimal degrees to radians, in JS: // Converts from degrees to radians. Math.radians = function (degrees) { return degrees * Math.PI / 180; }; console.log(Math.radians(45) * 4); // correctly = PI 2. Calcul of scale factor k: Then, mathematicians, who generally talk in Radians, expose : "In Mercator projection the ...



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