User:Markf129/Earth sciences data format interoperability: Difference between revisions

Revision as of 16:14, 9 September 2010

Revision as of 16:16, 9 September 2010

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===Coordinate systems===

[[georeference | Georeferencing]] is establishing the relationship between raster or vector images, coordinates, and also when determining the spatial ___location of other geographical features. When translating between different data formats, it is often required to establish a common coordinate system reference. In some cases, additional reference information, such as a [[world file]], may be needed in order to do the translation. For example, challenges occur when grid data is encoded in a "thinned" format, usually in the longitudinal dimension, where interoperability algorithms are needed. TranslatingWhen used, translating between the formats will always present challenges andhave trade offs. There are various GIS tools available that can help transform image data to some geographic control framework, like [[ArcGIS|ArcMap]], PCI Geomatica, or [[ERDAS Imagine]].