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**coordinate transformation** - Source: GETIS glossary

A mathematical operation on coordinates that includes a change of datum. The parameters of a coordinate transformation are empirically derived from a dataset containing the coordinates of a series of points in both coordinate reference systems. This computational process is usually "over determined", allowing derivation of error (or accuracy) estimates for the transformation. Also, the stochastic nature of the parameters may result in multiple (different) instantiations of the same coordinate transformation.

[Category=Geospatial ]

*Source: Open Geospatial Consortium, 06 June 2011 07:29:48, http://www.opengeospatial.org/ogc/glossary *

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**coordinate transformation** - [coordinate systems] The process of converting the coordinates in a map or image from one coordinate system to another, typically through rotation and scaling.

[Category=Geospatial ]

*Source: esri, 08 March 2012 08:37:30, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation *

Data Quality Glossary. A free resource from GRC Data Intelligence. For comments, questions or feedback: dqglossary@grcdi.nl