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Summary of data sets of King County Spatial Data Warehouse image library

This table outlines all the LiDAR-based elevation datasets in the King County Spatial Data Warehouse. All LiDAR data exists at one or more of 4 tiling levels (i.e., idxp7500, idxptrmbr, idxpzone, and keyregion) in different file formats, but with the same dataset naming convention.

LiDAR Dataset	Filename	File format	Data Extent	Availability
Digital Ground Model ("bare earth") point data	dgmPP.asc, where PP indicates Lidar Project subset	4 column (id,x,y,z) ascii file (zipped format)	Project area: Entire King County and SW Snohomish County	7500 tiling scheme only. Files are stored in compressed format
Digital Ground Model ("bare earth") surface network	gti, where PP indicates Lidar Project subset	ArcInfo TIN (Triangulated Irregular Network)	Project area: Entire King County and SW Snohomish County	7500 tiling scheme only.
Digital Ground Model ("bare earth") lattice	dgm006, where 006 indicates posting (resampling) interval	ArcInfo Grid	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme only.
Digital Ground Model ("bare earth") Hillshade	ghs006, where 006 indicates posting (resampling) interval	Compressed image format and TIF format image	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme (jp2) and 7500 tiling scheme (tif).
Digital Surface Model ("top-of-veg") point data	dsmPP.asc, where PP indicates Lidar Project subset	4 column (id,x,y,z) ascii file (zipped format)	Project area: Entire King County and SW Snohomish County	7500 tiling scheme only. Files are stored in compressed format
Digital Surface Model ("top-of-veg") surface network	sti, where PP indicates Lidar Project subset	ArcInfo TIN (Triangulated Irregular Network)	Project area: Entire King County and SW Snohomish County	7500 tiling scheme only.
Digital Surface Model ("top-of-veg") lattice	dsm006, where 006 indicates posting (resampling) interval	ArcInfo Grid	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme only.
Digital Surface Model ("top-of-veg") Hillshade	shs006, where 006 indicates posting (resampling) interval	Compressed image format and TIF format image	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme (jp2) and 7500 tiling scheme.(tif)
Digital Last Model ("last-return") point data. This is the 'superclass' of data from which the 'bare-earth' set is derived.	dlmkc.asc, only kc-project data.	4 column (id,x,y,z) ascii file (zipped format)	Project area: Only King County portion of combined PSLC/KC project areas	7500 tiling scheme only. Files are stored in compressed format
Digital Ground Model ("bare-earth") contour data in DXF format	ctr005.dxf, where 005 indicates the contour interval in feet	DXF format converted from line vector shape file	Project area: Entire King County and SW Snohomish County	7500 tiling scheme only
Digital Ground Model ("bare-earth") contour data in ESRI shapefile format	ctr005.shp, where 005 indicates the contour interval in feet	ESRI line vector shapefile format	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme only.
Digital Ground Model ("bare-earth") point density (generalized analysis of DGM control point density)	den.shp	ESRI polygon shapefile format	Project area: Entire King County and SW Snohomish County	Township-Range tiling scheme only.
Lidar first-return intensity point data	lrikc.asc, only kc-project data	3 column (x,y,intensity) ascii file (zipped format)	Project area: Only King County portion of combined PSLC/King County project areas	7500 tiling scheme only. Files are stored in compressed format
Lidar last-return intensity point data	lrikc.asc, only kc-project data	3 column (x,y,intensity) ascii file (zipped format)	Project area: Only King County portion of combined PSLC/King County project areas	7500 tiling scheme only. Files are stored in compressed format
Lidar first-return intensity image data	fri003.tif, where 003 indicates approximate 3-ft pixel resolution	Compressed image format and TIF format image	Project area: Only King County portion of combined PSLC/King County project areas	7500 tiling scheme only. Files are stored in compressed format
Lidar last-return intensity image data	lri003.tif, where 003 indicates approximate 3-ft pixel resolution	Compressed image format and TIF format image	Project area: Only King County portion of combined PSLC/King County project areas	7500 tiling scheme only. Files are stored in compressed format

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