GGR100H1 Lecture Notes - Remote Sensing, Geographic Information System, Map Projection
Document Summary
Week 1, lecture 1 & 2. Mapping: uses latitude and longitude, latitude: N or s of equator. Go all the way around 180 , then you will reach date line. Always at right angles to parallels: scales and projections, scales: How large something is on the map in reality. 3 types of scales: 1. Written one centimeter represents one kilometer : 2. The smaller the scale the more abstract the map will be: projections: We need to project the surface of a globe onto a map (2d). High detail in surface topography. E. g. forests, water bodies, features of cities: thematic maps. Can have points, areas or lines. Always have a specific purpose. Week 1, lecture 1 & 2: old maps aren"t always that accurate. Remote sensing showed us this. Geographic information systems (gis: used to store, process, manipulate and retrieve all kinds of data, piece data together in layers.
