County, King, 20010126, NatcolorXX.tif-DAIS Natural Color 8-bit Aerial Photography: King County, King County,WA.
County, King, 2000, ESA/SAO Multispectral Image Acquisition: King County, King County, WA.
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using Row and column
Planar coordinates are specified in Feet
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 80.
The semi-major axis of the ellipsoid used is 20925604.4720406.
The flattening of the ellipsoid used is 1/298.26.
This image dataset comprises 25 individual image tiles stored in TIFF format that can be displayed as a single seamless mosaic. The raw imagery was converted to natural color version.The imagery, within the horizontal accuracy and resolution limitations, serves as digital backdrop imagery for GIS analysis and cartographic display. In particular, the absolute and relative horizontal accuracy should be carefully considered when either determining coordinate positions or when applying the data relative to other spatial datasets.
The raw images were georectified by the vendor using available 10 m DEM supplemented by limited GPS ground control. After delivery of the tiled images, in-house horizontal accuracy analysis indicated that the data met or exceeded the contract specification for NMAS 1:10000 (CE90 of 4 m = 13.1 feet). The number of known ground control for confirmation was very small (9) and three of the locations were not discernable on the imagery. For the remaining six discernable points the horizontal offset between the imagery and the known control point ranges from 1 to 2 meters. Initial review indicates that the data exhibits this level of accuracy relatively evenly over the area of interest without significant skewing. See <http://www5.kingcounty.gov/sdc/horiz_accuracy.htm>
Are there legal restrictions on access or use of the data?
- Access_Constraints: Online access is restricted to King County GIS users.
- King County digital data may not be reproduced or redistributed in any form or by any means without the express written authorization of the the King County Department of Information and Administrative Services. Specific contraints apply per the licensing agreement with Space Imaging.
natcolorXX.tif where XX references a tile_id linked to a single polygon location in idxpdais.shp index scheme
The King County Department of Information and Administrative Services disclaims any warranty of use of any digital product beyond that which it was designed.
|Data format:||TIFF image format|
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