Lecture Map Projections And Coordinate Systems

Map Scale Coordinate Systems Projections Lecture 3 Pdf Latitude The data are projected onto a local map coordinate system for editing, analysis and mapping. as example, the internal coordinate system of google earth are geographic coordinates (latitude longitude) on the world geodetic system of 1984 (wgs84) datum. Projections distort distance, area, direction and shape to greater or lesser degrees; choose projection that minimizes the distortion of the map theme. points of tangency, standard parallels and secants are points or lines of no distortion.

Lecture 3 Concept Of Geographic Coordinate Systems Map Projections And Usually occurring after data acquisition, these procedures use algorithms to transform feature coordinate values from one system of horizontal control to another. the transformations could include the map projection, the datum, and the coordinate system. Simply put, a datum is the mathematical model of the earth we use to calculate the coordinates on any map, chart, or survey system. all coordinates reference some particular set of numbers (datum) for the size and shape of the earth. The objective of this section is to describe and discuss the concepts of map scale, coordinate systems, and map projections and explain why they are central to maps, mapping, and geographic information systems (giss). How do map projections work? transforms lat long (geographic coordinates) to an x y cartesian coordinate system using mathematical equations i.e. mercator projection mapping equation:.

06 Map Projections And Coordinate Systems Pdf Latitude Geography The objective of this section is to describe and discuss the concepts of map scale, coordinate systems, and map projections and explain why they are central to maps, mapping, and geographic information systems (giss). How do map projections work? transforms lat long (geographic coordinates) to an x y cartesian coordinate system using mathematical equations i.e. mercator projection mapping equation:. Projected coordinate systems are planar coordinates instead of geographic coordinates. the difference is geographic coordinates use angular units of measurement (degrees and radians) while planar uses “real world” units such as feet, meters, and international feet. It discusses the inherent distortions in projections, their types (conic, cylindrical, planar), and key classifications such as conformal, equal area, equidistant, and azimuthal projections. Lecture 3: understanding map projections & coordinate systems course: introduction to cartography and gis (gisv201). Lecture 3: map projections and coordinate systems october 6, 2010, prof. joseph ferreira (based on notes by prof. mike flaxman and former visting prof. zhong rhen peng with contributions from prof. peter dana's (u. of colorado) web pages).

Lec02 Coordinate Systems And Map Projections Pdf Latitude Geodesy Projected coordinate systems are planar coordinates instead of geographic coordinates. the difference is geographic coordinates use angular units of measurement (degrees and radians) while planar uses “real world” units such as feet, meters, and international feet. It discusses the inherent distortions in projections, their types (conic, cylindrical, planar), and key classifications such as conformal, equal area, equidistant, and azimuthal projections. Lecture 3: understanding map projections & coordinate systems course: introduction to cartography and gis (gisv201). Lecture 3: map projections and coordinate systems october 6, 2010, prof. joseph ferreira (based on notes by prof. mike flaxman and former visting prof. zhong rhen peng with contributions from prof. peter dana's (u. of colorado) web pages).