GEOG 1HB3 Lecture Notes - Lecture 2: Lambert Conformal Conic Projection, Mercator Projection, Spatial Analysis
1 Oct 2016
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Document Summary
Maps are 2-dimensional graphical representations of the world, and depict spatial relationships; shows the location of cities and their size, depicts boundaries. Maps communicate information, analyze spatial information, and are socially constructed" (prepared for a particular objective to do analysis on) Read maps with a critical eye: question if there is something you should be aware of. Projection: mathematical technique for representing a 3- dimensional sphere on a 2-dimensional map. Imagine a light-bulb the earth is see through and a light bulb is shining from the center in all directions. Paper on the surface of the earth (touching the earth at any point: shadow = image, perfect reflection vs. distorted image, projection is very good in which the paper touches the earth. Three main kinds of projections exist each with their own advantages & limitations. Accuracy is greatest at the equator (good depiction), and declines as you move towards the poles (distorted)
