| 词条 | John P. Snyder |
| 释义 |
John Parr Snyder (12 April 1926 – 28 April 1997) was an American cartographer most known for his work on map projections for the United States Geological Survey (USGS).[1] Educated at Purdue and MIT as a chemical engineer, he had a lifetime interest in map projections as a hobby, but found the calculations tedious without the benefit of expensive calculators or computers. At a cartography conference in 1976, he learned of the need for a map projection that would suit the special needs of LandSat satellite imagery.[2] He had recently been able to purchase a pocket calculator (TI-59) of his own and set to work creating what became known as the space-oblique mercator projection, which he provided to the USGS at no charge. He was subsequently offered a job within the USGS within two years, where his work apparently led him to the eventual publication of the definitive technical guide to map projections entitled Map Projections: A Working Manual among other works. He also authored Flattening the Earth: Two Thousand Years of Map Projections which details the historical development of hundreds of map projections. Snyder developed at least one other projection, called GS50, which uses a complex polynomial to project the 50 U.S. states with minimal distortion. He taught courses on map projection at George Mason University. He was president of the American Cartographic Association (now CaGIS) from 1990–1991 and also served as a secretary to the Washington Map Society. John Snyder died April 28, 1997. Publications
| publisher = University of Chicago Press | isbn = 0226767477 | last = SNYDER | first = John P. | title = Flattening the earth: two thousand years of map projections | date = 1993 }}
| publisher = CRC Press | isbn = 0748406689 | last1 = Yang | first1 = Qihe | last2 = Snyder | first2 = John P. | title = Map Projection Transformation: Principles and Applications | date = 1999 }}
| publisher = University Of Chicago Press | isbn = 0226907333 | volume = 3 | pages = 365–381 | editors = David WOODWARD (ed.) | last = SNYDER | first = John P. | title = Cartography in the European Renaissance | chapter = Map projections in the Renaissance | series = The History of Cartography | date = 2007 }} References1. ^{{cite web |url=http://www.state.nj.us/state/darm/links/guides/psnyd001.html |title=NJDARM: Collection Guide |publisher=State.nj.us |date= |accessdate=2012-03-03 |deadurl=yes |archiveurl=https://web.archive.org/web/20130324022450/http://www.state.nj.us/state/darm/links/guides/psnyd001.html |archivedate=2013-03-24 |df= }} 2. ^{{cite web | url=https://www.wired.com/2014/06/get-to-know-a-projection-the-space-oblique-mercator/ | title=Get to Know a Projection: The Space-Oblique Mercator | publisher=Wired | date=June 20, 2014 | accessdate=2014-06-21 | author=Stockton, Nick}}
External links
5 : 1926 births|1997 deaths|American cartographers|American geologists|United States Geological Survey personnel |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。