Oregon coordinate reference system - Version 3.01, February 28, 2017
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|Title:||Oregon coordinate reference system: handbook and map set.|
|Alternative Title:||Oregon coordinate reference system: handbook and user guide.|
Armstrong, Mark L., author,
Oregon Department of Transportation. Geometronics Unit,, issuing body.
|Type of Resource:||text|
Handbooks and manuals.
|Publisher:||Oregon Department of Transportation, Highway Division, Geometronics Unit,|
|Place of Publication:||[Salem, Oregon] :|
|Extent:||1 online resource (volumes) : color illustrations, color maps|
|Abstract/Description:||This document contains the history, development, best practice methods, and technical creation of the Oregon Coordinate Reference System (OCRS) for the State of Oregon. The OCRS is based on a series of 'low distortion' map projections (zones) whose parameters have been defined such that lineal distortion is very minimal for certain geographic areas. Each zone has been optimized by design, to be useful for surveying, engineering, GIS, and cartographic mapping, wherein distances computed between points on the grid coordinate system will closely represent the distances physically measured between the same points on the ground within published zone tolerances. It is important to realize that rectangular grid coordinates for all of the OCRS map projections may now be calculated with formulas through computer programs that would have seemed too complicated in the past, but now are considered to be a routine exercise. These same computer programs may also allow users to complete transformations, moving the coordinates of a point or group of points from one coordinate system referenced to one frame/datum/realization, into coordinates referenced to a different frame/datum/realization for a given epoch. While having numerous state coordinate systems may seem cumbersome at first, actual user application through highly precise GNSS and terrestrial measurement devices provide for a level of measurement accuracy that is beneficial to all mapping professionals.|
lead author - Mark L. Armstrong.
Title from PDF cover (viewed on August 27, 2021).
Covers OCLC #1265437391 and OCLC #1062693859.
This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
Includes bibliographical references.
Mode of access: Internet from the Oregon Government Publications Collection.
Text in English.
Spatial data infrastructures -- Oregon -- Handbooks, manuals, etc
Digital mapping -- Handbooks, manuals, etc
Map projection -- Handbooks, manuals, etc
|Held by:||Oregon State Library|
|Restrictions on Access:||http://rightsstatements.org/vocab/CNE/1.0/|