ESSE 3600 Study Guide - Final Guide: Earth Radius, Conformal Map, Map Projection

• School: York University
• Department: Earth, Space Science and Engineering
• Course: ESSE 3600
• Professor: Sohn

Document Summary

Gis short answer questions for final exam: a) the three types of map projections are conformal(equal angle), equal area, and equidistant. Conformal map projections try to preserve angles locally. It is a horizontal position representation, it is used to identify locations on the earth independently of vertical position, and it differs from latitude and longitude. It divides earth into 60 zones, based on longitude. In addition to the projection, the ground resolution or map scale must be specified in order to render a map. At the lowest level of detail (level 1), the map is 512 x 512 pixels. At each successive level of detail, the map width and height grow by a factor of 2: level 2 is 1024 x. 1024 pixels, level 3 is 2048 x 2048 pixels, level 4 is 4096 x 4096 pixels, and so on.