Tuesday, November 19, 2013

DOQQ (Digital Orthophoto Quarter Quad)




http://www.environment.gov.au/node/21479

A DOQQ map, or Digital Orthophoto Quarter Quads map, is a digital aerial image produced by the USGS. The advantage of a DOQQ map is that it is a spatially accurate image that shows things in their correct geographic locations. This digital picture is an aerial color infrared photograph of Johnston County Nebraska in 1998.

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