7500-FT Tiling Status for KC Raster Datasets

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: King County
Publication_Date: 20030701
Title: 7500-FT Tiling Status for KC Raster Datasets
Edition: One
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: King County, WA
Publisher: King County
Other_Citation_Details: None
Online_Linkage: <http://www5.kingcounty.gov/gisdataportal/Default.aspx>
Description:
Abstract:
A spatial tiling index designed for storage of file-based image and other raster (i.e., LiDAR elevation, landcover) data sets. A regular grid with origin at 0,0 of the Washington North State Plane Coordinate System, with grid cells defined by orthogonal bounds 7500 feet long in easting and in northing. Only those cells currently involved in one of several image/raster data projects for King County and southwestern Snohomish County are labelled, though the labeling scheme can be extended. The name of the spatial index is derived from the acronym (I)n(D)e(X) (P)olygons at the (7500) foot tile level, or idxp7500. Cell label is a row-id cocantenated with a column-id generating a four-character identifier that uniquely identifies every cell. The row portion of the identifier is a two-character alpha code of the format aa, ab, ac.... ba, bb, etc. and the column portion is a two-digit integer value such as 01, 02, 03.... 11,12,13, etc. A composite cell identifier would be then, for example, aa01, aa02, .....ba11,ba12, etc. Not all image and raster data is stored at the tiling level represented by this index. Data is stored at this level if full-resolution, uncompressed data would generate larger than manageable file sizes at a larger tile size.
Purpose:
This index is primarily a data processing, data storage level index which allows all raster and image data stored at this level to be maintained in a common, consistent tile and naming scheme. The index also serves as a useful central reference scheme for identification of real-world locations. This index level is useful for users of LiDAR-derived elevation data stored as TINS because TIN format data, as well as ASCII format data, are stored only at this tiling level. Imagery in native uncompressed format will also be stored only at this level. As each cell is defined with orthogonal edges relative the Washington State Plane coordinate system, it accomodates most common pixel resolutions of multiple ground sample distance (gsd) without partial pixel effects and without zero or NULL data 'splinters'.
Supplemental_Information:
This spatial index is one of three index or tiling levels used to store King County image and raster data. Each higher index level is designed to build upon the lower levels, with the same data often stored at more than one level (though at different resolutions) to meet a range of business and software requirements. Individual shapefiles for each of the cells in this index are available in gisimage/images/reference/indexes/idxp7500_shp as 'tileabb'_bnd.shp.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20030701
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.570272
East_Bounding_Coordinate: -121.005504
North_Bounding_Coordinate: 47.986791
South_Bounding_Coordinate: 47.048751
Keywords:
Theme:
Theme_Keyword_Thesaurus: Not applicable
Theme_Keyword: reference grids
Theme_Keyword: survey
Theme_Keyword: Image data
Theme_Keyword: Raster data
Theme_Keyword: Spatial index
Theme_Keyword: Tiling index
Place:
Place_Keyword_Thesaurus: Not applicable
Place_Keyword: Seattle
Place_Keyword: Washington state
Place_Keyword: Pacific NW
Place_Keyword: King County
Place_Keyword: WA
Place_Keyword: Snohomish County
Place_Keyword: southwestern portion
Access_Constraints: None
Use_Constraints:
King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: King County GIS Center
Contact_Person: Victor High
Contact_Position: Senior GIS Specialist
Contact_Address:
Address_Type: mailing and physical
Address: 201 S Jackson St, Suite 706
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: US
Contact_Voice_Telephone: 206-263-4845
Browse_Graphic:
Browse_Graphic_File_Name: <http://www5.kingcounty.gov/sdc/DataImages/raststat_7500.jpg>
Browse_Graphic_File_Description:
JPG File of layer overlain on base of WA counties or local cities
Browse_Graphic_File_Type: JPG
Native_Data_Set_Environment:
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Identifiers for each cell are sequential and unique.
Logical_Consistency_Report: All cells have a label attribute
Completeness_Report:
The index currently covers the King County and southwestern Snohomish County areas currently involved in several related image/raster data acquisition projects. The extent has been buffered to encompass some adjoining areas.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The bounds of each cell were generated from State Plane easting and northing coordinate values defined from the 0,0 origin and at even 7500 increments.
Lineage:
Process_Step:
Process_Description:
Microsoft Excel was used to create a master attribute spreadsheet with all other cell attributes tied to the unique integer id of each cell. The data from the spreadsheet was exported to text format and joined to the shapefile dbf in ArcView. The resulting updated shapefile was reexported to a final shapefile.
Process_Date: 20020101
Process_Step:
Process_Description:
ArcInfo GENERATE command with FISHNET option was used to create the polygon coverage of individual cells. The coverage was converted to a shapefile. An integer row-id and integer column-id were updated for the PAT. The values from each of these items was cocatenated to produce a unique integer identifier for each cell. Process_Date: 012003
Process_Date: 20030101
Process_Step:
Process_Description:
To accomodate generation of the Zone level tiling index, additional attributes were added to the index shapefile dbf to indicate of which zone each cell is a member.
Process_Date: 20030601
Process_Step:
Process_Description:
Grid imported from shapefile to featureclass. Grid extended along northern edge in Snohomish County to accomodate expansion of new image acquisition projects.
Process_Date: 20100301

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
The grid defined by this index is a regular grid that does not have any additional or indirect spatial reference.
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 0

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Lambert_Conformal_Conic:
Standard_Parallel: 47.5
Standard_Parallel: 48.73333333333333
Longitude_of_Central_Meridian: -120.8333333333333
Latitude_of_Projection_Origin: 47.0
False_Easting: 1640416.666666667
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0003280833333333334
Ordinate_Resolution: 0.0003280833333333334
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: PLIBRARY.SURVEY.xxxx282697
Entity_Type_Definition: Polygon attribute table
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: SHAPE
Attribute_Definition: Feature Geometry
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features
Attribute:
Attribute_Label: Shape.area
Attribute_Definition: Polygon area
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Area of feature in square feet
Attribute:
Attribute_Label: Shape.len
Attribute_Definition: Polygon perimeter
Attribute_Definition_Source: King County
Attribute_Domain_Values:
Unrepresentable_Domain: Length of feature in feet
Attribute:
Attribute_Label: dgm_ascii
Attribute:
Attribute_Label: dgm_contour
Attribute:
Attribute_Label: dgm_tin
Attribute:
Attribute_Label: dlm_ascii
Attribute:
Attribute_Label: drg_usgstopo
Attribute:
Attribute_Label: dsm_ascii
Attribute:
Attribute_Label: dsm_hillshade
Attribute:
Attribute_Label: dsm_tin
Attribute:
Attribute_Label: fri_ascii
Attribute:
Attribute_Label: firstret
Attribute:
Attribute_Label: lastret
Attribute:
Attribute_Label: lri_ascii
Attribute:
Attribute_Label: kc_pan
Attribute:
Attribute_Label: seattle_pa
Attribute:
Attribute_Label: nies_nat
Attribute:
Attribute_Label: wadnr_pan
Attribute:
Attribute_Label: dais_cir
Attribute:
Attribute_Label: dais_nat
Attribute:
Attribute_Label: emerge_cir
Attribute:
Attribute_Label: emerge_nat
Attribute:
Attribute_Label: ikonos_nat
Attribute:
Attribute_Label: spaceimg_n
Attribute:
Attribute_Label: kc_nat
Attribute:
Attribute_Label: usgs_nat
Attribute:
Attribute_Label: aexp_nat
Attribute:
Attribute_Label: seattle_na
Attribute:
Attribute_Label: kc07_nat
Attribute:
Attribute_Label: aexp_cir
Attribute:
Attribute_Label: ecity_nat
Attribute:
Attribute_Label: kc09_nat
Attribute:
Attribute_Label: kc10_cir
Attribute:
Attribute_Label: kc10_nat
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 2295
Attribute_Measurement_Resolution: 1
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: TILE_ABBLC
Attribute_Definition:
Primary 'colloquial' identifier for each cell identical in value to the tile_abb, but where the alpha portion of the code is lowercase. Unique alphanumeric identifier comprised of two-character alpha code defining in which spatial column the cell exists cocantenated with a two-digit numeric code defining in which spatial row the cell exists.
Attribute_Definition_Source: King County
Attribute_Domain_Values:
Unrepresentable_Domain: Unique alphanumeric code
Overview_Description:
Entity_and_Attribute_Overview:
All cells are identified with a several attributes that represent unique row, column and cell identifiers as well as other parameters. As the shapefile serves primarily as a spatial index, the tile_abb and tile_abblc are the primary attributes needed to correctly reference and describe the location of the cell tile.
Entity_and_Attribute_Detail_Citation: None

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: KCGIS Center
Contact_Person: Cheryl Wilder
Contact_Position: Data Sales Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 201 S Jackson St, Suite 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: US
Contact_Voice_Telephone: 206-263-5220
Resource_Description: /plibrary2/survey/shapes/polygon/raststat_7500.shp
Distribution_Liability:
King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI Shapefile
Fees:
Contact KCGIS Client Services for the cost of reproduction - <http://www.kingcounty.gov/operations/GIS/GISData/GISDataDistribution.aspx>

Metadata_Reference_Information:
Metadata_Date: 20130220
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: King County GIS Center
Contact_Person: Mike Leathers
Contact_Position: GIS Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 201 S Jackson St, Suite 706
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: US
Contact_Voice_Telephone: 206-263-4867
Contact_Electronic_Mail_Address: firstname.lastname@kingcounty.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.9.12 on Sat Apr 06 05:37:32 2019