GIS Data Catalog

IDXPTRNEAT - PLSS Township-RangeTiling Index for King County Raster Data

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Summary

This index or tile level is used for raster and vector clipping by township range and is simular to IDXPTRNEAT and is based the PLSS.

Description

A spatial tiling index designed for processing of file-based image and other raster (i.e., LiDAR elevation, landcover) data sets.

A grid based on the Public Land Survey System (PLSS).

It is different than the PLSS layer itself in that townships along the western edge of Puget Sound have been arbitrarily extended as full townships into the water.

Polygons in portion of Pierce County and the eastern edge of King County have not been extended.

The name of the spatial index is derived from the acronym (I)n(D)e(X) (P)olygons for (T)ownship-(R)ange, (NEAT) or idxptrneat.

Tile label is the t(township number)r(range number)as in t24r02.

The meridian zone identifiers, N for townships and R for range is inferred as this index is intended as a local index for ease of use by the majority of users of GIS data.

Lowercase identifiers are used for consistency between Unix and Windows OS storage.

Layer information

Layer Name	idxptrneat_area
Subject Category	Survey
Title	IDXPTRNEAT - PLSS Township-RangeTiling Index for King County Raster Data
Feature Count	138
Feature Type	Polygon
Next Update	As needed
Spatial reference	EPSG:2926
Control ID	748
Place Keywords	Pacific NW, Washington State, King County, WA
Theme Keywords	Survey, Reference Grids, Neat
Supplemental Information	Individual shapefiles for each of the cells in this index are available in gisimage/images/reference/indexes/idxptrneat_shp as 'tileabb'bnd.shp.

Attribute information

OBJECTID From ESRI	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
SHAPE From ESRI	Description Feature Geometry Domain Coordinates defining the features
TOWNSHIP From King County	Description Township number as string Domain Two digit township value
RNG From King County	Description Range number as string Domain Two digit range value, with padded zero for single digit range
TWNINT From King County	Description Township number as integer Domain 15.00000000 to 32.00000000 by
RNGINT From King County	Description Range number as integer Domain 0.00000000 to 16.00000000 by
TWNRNG From King County	Description Township Range number as integer Domain 1504.00000000 to 3215.00000000 by
TWNLAB From King County	Description Township Label Domain Township label such as T.19N
RNGLAB From King County	Description Range Label Domain Range label such as R.03E
MAP_LABEL From King County	Description Township Range Map Label Domain Full township/range map label such as T.19NR.03E
Shape.STArea() From SQL Server	Description Returns the area of a geometry instance in square units, based on the spatial reference identifier (SRID) of the geometry. Domain Double
Shape.STLength() From SQL Server	Description Returns the total length of the elements in a geometry instance. Domain Double

Contact information

Maintained by	KCGIS Center
Primary	KCGIS Center giscenter@kingcounty.gov

Terms of Use

License	Terms of use and copyright