1 edition of **Computer-assisted map projection research.** found in the catalog.

Computer-assisted map projection research.

- 23 Want to read
- 23 Currently reading

Published
by U.S. Dept. of the Interior in Washington
.

Written in English

- Map-projection - Data processing

**Edition Notes**

11

The Physical Object | |
---|---|

Pagination | 157 p. |

Number of Pages | 157 |

ID Numbers | |

Open Library | OL22016801M |

A map projection is a systematic representation of all or part of the surface of a round body, especially the Earth, on a plane. Appears in 5 books from Page - States, in which the 1° quadrangle is the largest unit * * * and the 15' quadrangle is the average unit. Computer-assisted mapping has fundamentally changed cartographic design. In traditional mapping, the designer had to decide on the final choice and position of every feature on the map before drawing the first feature. Now anything can be changed in computer-assisted mapping and design rules have lost some of their rigour.

Map projection concerns the science of mathematical cartography, the techniques by which the Earth's dimensions, shape and features are translated in map form, be that two-dimensional paper or two- or three- dimensional electronic representations. The central focus of this book is on the theory of map projections. This is a digital copy of a book that was preserved for generations on library shelves before it was carefully scanned by Google as part of a project to make the world’s books discoverable online. It has survived long enough for the copyright to expire and the book to enter the public domain.

GS50 is a map projection that was developed by John Parr Snyder of the USGS in The GS50 projection provides a conformal projection suitable only for maps of the 50 United States. Scale varies less than 2% throughout the area covered. Distortion is very low as well. It is not a standard projection in the sense that it uses complex polynomials (of the tenth order) rather than a. The chorographic world maps cannot go missing from the atlases for the general public and for schools. Among other requirements, their map distortions are usually expected to be minimal. In the aphylactic projections both the angular and area distortions can be reduced by the principle of “balance of errors”.

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COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as Computer-assisted map projection research.

book consider how to handle coronavirus. Aside from the title Cartographic Science: A Compendium of Map Projections, with Derivations by Donald Fenna, two other references concerning Map Projections book literature are also worth of notice, as the 2nd edition of the title Map Projections: Cartographic Information Systems by Erik Grafarend with twice the number of pages and costing about twice the price of Donald Fenna book Cited by: Get this from a library.

Computer-assisted map projection research. [John Parr Snyder; Geological Survey (U.S.),]. Buy Computer-assisted map projection research (U.S. Geological Survey bulletin) by Snyder, John Parr (ISBN:) from Amazon's Book Store.

Everyday low prices and free delivery on eligible : John Parr Snyder. This book reflects several aspects of the development of modern mathematical cartography, especially the theory and methods of map projection transformation.

Map projection transformation is an area of research in mathematical cartography newly developed over the last 25 years. It is widely used in surveying and computer-assisted cartography Cited by: Map projection transformation is an area of research in mathematical cartography newly developed over the last 25 years.

It is widely used in surveying and computer-assisted cartography, data processing for information systems, and the Computer-assisted map projection research.

book of data. Map projection concerns the science of mathematical cartography, the techniques by which the Earth's dimensions, shape and features are translated in map form, be that two-dimensional paper or two- or three- dimensional electronic representations.

The central focus of this book is on the theory of map projections. Mathematical cartography also takes in map scales and their variation, the Reviews: 1. After decades of using only one map projection, the Polyconic, for its mapping program, the U.S.

Geological Survey (USGS) now uses several of the more common projections for its published maps. One application has been in the efficient transfer of data between maps on different projections.

A second area of research is in the determination of a map projection fitting an unlabeled map, so. This book reflects several aspects of the development of modern mathematical cartography, especially the theory and methods of map projection transformation.

Map projection transformation is an area of research in mathematical cartography newly developed over the last 25 years. It is widely used in surveying and computer-assisted cartography.

The first fundamental form and the Gaussian fundamental quantities are defined and applied to obtain the plotting equations and distortions in length, shape and size for some of these map projections.

Aside from the title Cartographic Science: A Compendium of Map Projections, with Derivations by Donald Fenna, two other references concerning Map Projections book literature are also worth of notice, as the 2nd edition of the title Map Projections: Cartographic Information Systems by Erik Grafarend with twice the number of pages and costing about twice the price of Donald Fenna book.

Aside from the title Cartographic Science: A Compendium of Map Projections, with Derivations by Donald Fenna, two other references concerning Map Projections book literature are also worth of notice, as the 2nd edition of the title Map Projections: Cartographic Information Systems by Erik Grafarend with twice the number of pages and costing about twice the price of Donald Fenna book Reviews: 1.

Yet this has also created new challenges and opportunities for map projection scientists. Small Scale Map Projection Design focuses on numerical map projection research, and is written from the perspective of the map projection user. In standard presentation, azimuthal projections map meridians as straight lines and parallels as complete, concentric circles.

They are radially symmetrical. In any presentation (or aspect), they preserve directions from the center point. This means great circles through the central point are represented by straight lines on the map.

In cartography, a map projection is a way to flatten a globe's surface into a plane in order to make a map. This requires a systematic transformation of the latitudes and longitudes of locations from the surface of the globe into locations on a plane.

All projections of a sphere on a plane necessarily distort the surface in some way and to some extent. Computers have opened up areas of map projection research which were previously too complicated to utilize, for example, using a least-squares fit to a very large number of points.

One application has been in the efficient transfer of data between maps on different projections. While the transfer of moderate amounts of data is satisfactorily accomplished using the analytical map projection.

Purchase Coordinate Systems and Map Projections - 2nd Edition. Print Book & E-Book. ISBN Aside from the title Cartographic Science: A Compendium of Map Projections, with Derivations by Donald Fenna, two other references concerning Map Projections book literature are also worth of notice, as the 2nd edition of the title Map Projections: Cartographic Information Systems by Erik Grafarend with twice the number of pages and costing about twice the price of Donald Fenna book Reviews: 1.

A map projection is a device for producing all or part of a sphere on a flat sheet. Some projections preserve distance or true direction, some maintain correct shapes, and others preserve the property of areal size.

Map projections can be studied from the point of view of: 1. The form of the surface used for the projection. In addition, a historical review of map projections is given, and procedure of world map cre-ation which served as illustration is explained. Discover the world's research 17+ million members.Map projection selection.

17 The selection of a suitable map projection is an important issue in small-scale map design, especially for the mapping of large areas, where map projection distortion exceeds the threshold of visibility. Over the years a great number of map projections have been proposed. Even for the skilled cartographer, who has a good knowledge of map projection principles.In parentheses following Clarke's original proposed radii are slightly different ones calculated much later with a computer, given in Computer-Assisted Map Projection Research by J.

P. Snyder, U. S. Geological Survey Bulletin The calculations involved in determining the optimum perspective point were quite laborious at the time.