King County Image/Raster DataSet Extents - allextents.shp and individual extent shapefiles

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: King County
Publication_Date: 200307

Title:
King County Image/Raster DataSet Extents - allextents.shp and individual extent shapefiles

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: None
Description:
Abstract:
Geographic extent of each image/raster data set in the King County Spatial Data Warehouse, KCSDW, described as a bounding polygon. The individual polygon bounds are stored separately as x_'dataset-name'.shp and also as a composite (merged) shapefile of all overlapping bounds. The polygon bounds describe the true edge of valid data of each dataset, which may lie inside the extent of NULL or zero values, or the extent of the minimal-bounding rectangle (mbr) of the dataset.

Many of the bounding polygons names in the merged file and the names of the individual files complement names of data subdirectories within the idxp7500 and idxptrmbr master directories, as the full extent of these datasets is comprised of multiple tiles of more limited extent. Other bounding extent titles will not have a subdirectory for the dataset as they exist solely as a single theme at the KeyRegion (maximum extent) level.

Purpose:
Few of the raster data sets in the KCSDW have coincident extents so the extents polygons can be used to determine if valid data from that dataset exists for a given area of interest.

These extent polygons are not tiling or spatial indexes as they do not indicate how the data is subdivided and stored in the warehouse. Users are refered to the tiling indexes and associated metadata available on the KCGIS Spatial Data Catalog webpage at

<http://www.metrokc.gov/gis/sdc/index.htm>

This theme may be used in conjunction with the raster status indexes, raststat_7500.shp and raststat_trmbr.shp, which illustrate the availability of tiles in the raster library. The status indexes will show if a tile exists for a given dataset but the extent theme is required to determine if the full extent of a given tile contains valid data, i.e, useable imagery, elevation grid, landcover data.

Supplemental_Information: None
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 200301
Ending_Date: 200307

Currentness_Reference: Publication date

Status:
Progress: In Work

Maintenance_and_Update_Frequency: As Needed

Spatial_Domain:
Description_of_Geographic_Extent: The entirety of King County with environs buffer, specifically including the southwestern portion of Snohomish County.

Bounding_Coordinates

Keywords:
Theme:
Theme_Keyword_Thesaurus: Not applicable
Theme_Keyword: Image data

Theme_Keyword: Raster data

Theme_Keyword: Spatial index
Theme_Keyword: Tiling Index
Theme_Keyword: Maximum data extent

Place:
Place_Keyword_Thesaurus: Not applicable
Place_Keyword: King County, WA
Place_Keyword: Pacific NW
Place_Keyword: Washington state
Place_Keyword: Seattle
Place_Keyword: Snohomish County, southwestern portion

Access_Constraints: None
Use_Constraints: None

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Michael Leathers

Contact_Organization:
King County Geographic Information Center, Department of Natural Resources and Parks
Contact_Position: GIS Data Coordinator
Contact_Address:
Address_Type: Mailing and physical address
Address: 201 S Jackson St, Suite 706

City: Seattle
State_or_Province: WA
Postal_Code: 98104

Country: USA
Contact_Voice_Telephone: 206-263-4867
Native_Data_Set_Environment:
ArcInfo, ArcView and any other software that can read ESRI shapefile format on Windows or Unix. Index is available only in shapefile format.

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Description of the data set whose bounding polygon is illustrated is based on a general summary of the different versions and formats of image and/or other raster data derived from that data set. It is not meant to be an explicit listing of the data formats or file types available for that extent.
Logical_Consistency_Report:
All polygons have an integer identifier, dataset abbreviation, dataset name and general description.
Completeness_Report:
The polygons are manually updated as necessary to reflect the extent of all raster/image datasets stored within the KCSDW.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The bounds of each polygon were digitized using heads-up editing of the actual imagery or raster data. Polygon bounds are estimated to be plus/minus 20 feet of acutal data extent.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: King County

Publication_Date: 2003
Title:
Various King County Spatial Data Warehouse Image/Raster datasets
Geospatial_Data_Presentation_Form: Raster digital data
Publication_Information:
Publication_Place: King County, WA
Publisher: King County
Other_Citation_Details: None
Type_of_Source_Media: Raster digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1993
Ending_Date: 2003
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: KCSDW
Source_Contribution: Raster/Imagery extents
Process_Step:
Process_Description:
Heads up digitizing was used to create and edit vectors defining the bounds of each raster data set.
Process_Date: 082003
Process_Step:
Process_Description:
Shapefiles were created from each dataset's digitized bounds. Four attribute items were added and populated for each shapefile. The shapefiles were merged in ArcView 3.2a using the GeoProcessing Extension. The individual shapefiles are preserved for use as individual shapefiles or for conversion to coverages. As new datasets are acquired, a new extents polygon will be generated and all the individual polygons can be merged into a replacement file.

Process_Date: 082003

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
The polygon bounds of each shapefile describe the extent of valid data for that raster dataset. No other spatial reference is implied.
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Ring composed of arcs

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: Washington, North
Lambert_Conformal_Conic:
Standard_Parallel: 47.500000
Standard_Parallel: 48.733333
Longitude_of_Central_Meridian: -120.833333
Latitude_of_Projection_Origin: 47.000000
False_Easting: 1640416.666500
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and column
Coordinate_Representation:
Abscissa_Resolution: 1
Ordinate_Resolution: 1
Planar_Distance_Units: Survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983, 1991 Adjustment (HPGN)
Ellipsoid_Name: GRS 80
Semi-major_Axis: 20925604.4720406
Denominator_of_Flattening_Ratio: 298.26

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Shapefile dbf attribute file
Entity_Type_Definition: Polygon identifier and descriptive attributes
Entity_Type_Definition_Source: Software assigned and user indexed
Attribute:
Attribute_Label: id
Attribute_Definition: Sequential identifier by dataset group
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Unrepresentable_Domain: four-digit integer
Attribute:
Attribute_Label: abbrev
Attribute_Definition: Short-phrase description of dataset name
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Unrepresentable_Domain: alphanumeric
Attribute:
Attribute_Label: name
Attribute_Definition: Full name of raster/image data set
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Unrepresentable_Domain: alphanumeric
Attribute:
Attribute_Label: desc
Attribute_Definition:
General summary description of the dataset and its derivative products
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Unrepresentable_Domain: alphanumeric
Overview_Description:
Entity_and_Attribute_Overview:
Each polygon is provided with descriptive attributes to allow on-inspection identification of the dataset to which it refers. The description in the 'desc' item is not meant as a substitute for the data set metadata.

Entity_and_Attribute_Detail_Citation: None

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dennis Higgins
Contact_Organization:
King County GIS Center, Client Services, Department of Natural Resources and Parks
Contact_Position: Manager, Client Services Division

Contact_Address:
Address_Type: Mailing and physical address
Address: 201 S Jackson St, Suite 706
City: Seattle
State_or_Province: WA
Postal_Code: 98104

Country: USA
Contact_Voice_Telephone: 206-263-4523

Resource_Description:
Image/Raster dataset extents, allextent.shp and separate shapefile extents identified as x_'dataset-name'.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: ArcInfo Shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: \\gisdw\kclib\plibrary3\reference\status
Offline_Option:
Offline_Media: CD-R, DVD+R
Recording_Format: CD: Read-only, DVD: DVD+R read-only
Fees:
Contact KCGIS Client Services <http://www.metrokc.gov/gis/services/> for cost of reproduction and delivery

Metadata_Reference_Information:
Metadata_Date: 20030715

Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Michael Leathers
Contact_Organization:
King County GIS Center, Department of Natural Resources and Parks

Contact_Position: GIS Data Coordinator

Contact_Address:
Address_Type: Mailing and physical address
Address: 201 S Jackson St, Suite 706
City: Seattle
State_or_Province: WA
Postal_Code: 98104

Country: USA
Contact_Voice_Telephone: 206-263-4863

Contact_Electronic_Mail_Address: mike.leathers@metrokc.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.7.33 on Sat Dec 18 22:12:59 2004