Unit 2 Mapping and Remote Sensing

Unit 2 Mapping and Remote Sensing - Unit 2 Mapping and...

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Unit 2 Mapping and Remote Sensing Types of Maps General Purpose 1. Topographic Map- to show topography (lay of the landscape), 2. Road/Political maps- Thematic Map 1. Isoline- 2. Graduated Circle- 3. Choroplethic- The history of Cartography Oldest known map- Mesopotamia (modern day Iraq and Iran) Cartography- the art and science of making maps. Digital elevation models (DEM)- can render maps quickly x,y,z coordinates. What is Scale? Graphic Scale- Verbal Scale- EX. one inch equals one mile/ not as used as much Representative Fraction- EX. 1:100,000 Small Scale Maps- show large areas Large Scale Maps- show small areas Map Proections Distortion from round(Globe) to flat(Map) “Projection” an image onto a “developmental surface” Developmental Surfaces- Flat surface that you have wrapped around the globe in order to project the data. (Cylindrical, Conic, Azimuthal{for mapping the Poles}) Examples of Distortions *The relative size of regions- *The shape of the regions Directions Distances
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Equivalence vs. Conformality
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Unit 2 Mapping and Remote Sensing - Unit 2 Mapping and...

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