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- John_P._Snyder abstract "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). 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 satellite imagery. 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 from 1990–1991 and also served as a secretary to the Washington Map Society.John Snyder died April 28, 1997.".
- John_P._Snyder birthDate "1926".
- John_P._Snyder birthYear "1926".
- John_P._Snyder deathDate "1997".
- John_P._Snyder deathYear "1997".
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- John_P._Snyder wikiPageExternalLink PP_1395.pdf.
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- John_P._Snyder wikiPageExternalLink pp1395.
- John_P._Snyder wikiPageExternalLink report.pdf.
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- John_P._Snyder wikiPageExternalLink gs50_projection.htm.
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- John_P._Snyder dateOfBirth "1926".
- John_P._Snyder dateOfDeath "1997".
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- John_P._Snyder name "Snyder, John P.".
- John_P._Snyder placeOfBirth "Indianapolis, Indiana".
- John_P._Snyder placeOfDeath "Sandy Spring, Maryland".
- John_P._Snyder shortDescription "American cartographer".
- John_P._Snyder description "American cartographer".
- John_P._Snyder description "American cartographer".
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- John_P._Snyder subject Category:American_cartographers.
- John_P._Snyder subject Category:American_geologists.
- John_P._Snyder subject Category:United_States_Geological_Survey_personnel.
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- John_P._Snyder comment "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). 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.".
- John_P._Snyder label "John P. Snyder".
- John_P._Snyder label "John Parr Snyder".
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- John_P._Snyder givenName "John P.".
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- John_P._Snyder name "John P. Snyder".
- John_P._Snyder name "Snyder, John P.".
- John_P._Snyder surname "Snyder".