Single Member District

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Office of Planning
Originator: Board of Elections and Ethics
Publication_Date: 20110503
Title: Single Member District
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publisher: DC GIS
Online_Linkage:
Server=10.1.11.144; Service=5151; User=dcgis; Version=SDE.DEFAULT
Larger_Work_Citation:
Citation_Information:
Title: DC Geographic Information System DC Atlas
Description:
Abstract:
Single Member District or SMD's.
Advisory Neighborhood Commissions were created pursuant to legislation approving the District of Columbia's "Home Rule" charter in 1973,. These neighborhood groups were to provide the neophyte District electorate with "grass-roots" experience in the electoral process. These groups were to be based on the latest Census Bureau records of the District's population. Each Single Member District (SMD) was to have approximately 2,000 residents, with boundaries to be developed by the new DC City Council. Candidates elected for each Single Member District sit as Advisory Neighborhood Commissioners. The first elections for these newly-formed Advisory Neighborhood Commissions (ANCs) were conducted in 1976. This data set reflects modifications to SMD boundaries approved by the Council in May, 2002, for official 2003 SMD boundaries.
All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.
METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.
Purpose:
SMDs are used for the planning and management of Washington by local government agencies. This specific data set was created for the specific purpose of printing maps of the various SMDs, each on a letter-sized sheet of paper. Boundaries have been digitized with sufficient accuracy for this purpose, and may or may not be sufficiently accurate for other purposes.
Supplemental_Information:
The DC Board of Elections and Ethics (BOEE) is responsible for maintaining SMD boundaries.
See the BOEE website @ <http://www.dcboee.org> for more SMD background.
This data set was compiled by the DC Office of Planning.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2002
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -77.119896
East_Bounding_Coordinate: -76.909016
North_Bounding_Coordinate: 38.995967
South_Bounding_Coordinate: 38.791582
Data_Set_G-Polygon:
Data_Set_G-Polygon_Outer_G-Ring:
G-Ring_Point:
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: SMD
Theme_Keyword: Single Member District
Theme_Keyword: Ward
Theme_Keyword: boundary
Theme_Keyword: ANC
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Washington DC
Place_Keyword: District of Columbia
Place_Keyword: DC
Place_Keyword: DC GIS
Place_Keyword: DCGIS
Use_Constraints:
For data terms and conditions, go to <http://dc.gov/page/terms-and-conditions-use-district-data>
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DC Office of Planning
Contact_Person: Charlie Richman
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 801 N Capitol St, NE # 4000
City: Washington
State_or_Province: DC
Postal_Code: 20002
Country: USA
Contact_Facsimile_Telephone: 202-442-7637
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30am - 5pm
Contact_Instructions: email
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Data believed to be complete and accurate, subject to change.
Completeness_Report: Data believed to be complete and accurate, subject to change.
Lineage:
Source_Information:
Source_Scale_Denominator: Originaly digitized following Census Tiger Line files for DC.
Type_of_Source_Media: Digital
Source_Information:
Source_Citation:
Citation_Information:
Originator: Office of Advisory Neighborhood Commissions
Publication_Date: 20091202
Title: SMD representatives
Geospatial_Data_Presentation_Form: spreadsheet
Online_Linkage: <http://anc.dc.gov/>
Type_of_Source_Media: database
Source_Citation_Abbreviation: ANC and SMD representatives
Source_Contribution: attributes
Process_Step:
Process_Description:
SMD boundaries were digitized on-screen between the scales of 1:5000 and 1:800 and snapped to an existing planimetric base layer. Although snapped to the existing base features, the digitized boundaries are not identical to those base features. Differences are not significant at scales that allow each SMD to be plotted on a letter-sized page, but differences may become apparent when zoomed in further.
SMD boundaries follow the legal boundary descriptions from the DC Council and Board of Elections and Ethics.
Gottlieb Simon (ANC staff) originally created boundaries for SMDs and ANCs reflecting redistricting using Atlas GIS and a TIGER/line base map. This product had important limitations because the TIGER/line base was not up to date, contained inaccurate and sometimes incorrect street data, and did not overlay properly over the other map data sets used by the District.
On a quick-turnaround basis, the Office of Planning created a set of SMD/ANC boundaries using ArcGIS 8.1 and a DC GIS planimetric base map. The design goal for this edition of these boundaries was not to create a topologically-correct product that overlaid precisely atop the corresponding planimetric features. Instead, it was to create boundaries that were of sufficient accuracy to allow rapid creation of 8 ? by 11 paper maps for each of the various SMDs and ANCs.
An ArcGIS 8.1 snap environment was used to snap to underlying features in the DC GIS snapbase layer. After a quick manual process to snap the TIGER-based boundaries to the corresponding planimetric boundaries, OP held a series of working sessions with BOEE, ANC, and Council staff to review each boundary against the appropriate legal description. Where needed, mapped boundaries were adjusted to fit legal descriptions using the "Shared Edit Tool" and the snapping environment. In many instances, this process highlighted inconsistencies in the legal descriptions, and BOEE and ANC staff created technical amendments as necessary to amend the defining legislation.
This manual editing process of snapping boundaries to features in the snapbase layer did not produce boundaries that were identical to the underlying features, but resulted merely in boundaries that shared selected vertices with the underlying features. At the design scales for this product, this difference is not visible on printed maps. These files, however, were not suitable for use in automated processes for developing lists of addresses in each SMD by overlay with street data.
After these files were transmitted to OCTO, one erratum was discovered and corrected. Thereafter, OCTO employed Michael Baker Corporation to conflate the SMD boundaries geodatabase to the snapbase GIS file. Michael Baker conducted the conflation effort, but consulted OCTO when there was a question with SMD boundary location. Since OCTO did not conduct the Phase 1 effort, and Michael Baker did not have the legal text, the generic rule was to conflate to the nearest snapbase when there was a question.
Finally, the SMD layer was updated and dissolved into the ANC layer.
Process_Date: 20020403
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: D.C. Office of the Chief Technology Officer
Contact_Person: GIS Data Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 200 I Street SE, 5th Floor
City: Washington
State_or_Province: DC
Postal_Code: 20001
Country: USA
Contact_Facsimile_Telephone: (202) 727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30 am - 5:00 pm
Process_Step:
Process_Description:
Quality Control:
Step 1 - Initial Check against prior edition The Office of Planning conducted an initial quality check that compared the updated boundaries to those originally delivered to OCTO. Each SMD was reviewed for anomalies, and flagged for future review with council staff and the legal text.
Step 2 - Detailed review with Edward Elders of Council Member Mendelson's staff OP staff reviewed those areas with Edward Elders of Council Member Mendelson's staff and the controlling legal text. The product of that review is a shapefile that is to be used as a guide for editing the final SMD boundary geodatabase. The SMD_edit_line is only a guide. Edits to the SMD geodatabase should use the snapbase where the SMD_edit_line follows snapbase features. Where the SMD_edit_line does not follow a snapbase feature, the exact path of the SMD_edit_line should be followed. Each line segment has attributes describing how edits should be conducted. The attributed SMD_edit_line is being transmitted to OCTO for use in editing the final SMD boundary geodatabase.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: D.C. Office of the Chief Technology Officer
Contact_Person: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 200 I Street SE, 5th Floor
City: Washington
State_or_Province: DC
Postal_Code: 20001
Country: USA
Contact_Facsimile_Telephone: (202) 727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30am - 5pm
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\TEMP\xml301.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: c:\temp\xmlD.tmp
Process_Step:
Process_Description:
Through the comparison of 2000 ward, 2002 ANC, 2002 SMD, and the snapbase features, OCTO staff performed several edits to align these layers. In this effort, staff corrected six issues.
Process_Date: 3/20/03
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: OCTO
Contact_Person: GIS Data Coordinator
Contact_Facsimile_Telephone: 202-727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30am - 5pm
Process_Step:
Process_Description: Dataset copied.
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\OCTOGIS\MetadataData\SDE.SMD02Ply.xml
Process_Step:
Process_Description:
OCTO GIS staff reviewed this layer for any changes with none to post at this time.
Process_Date: 07/19/05
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Office of the Chief Technology Officer
Contact_Person: GIS Data Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 200 I Street SE, 5th Floor
City: Washington
State_or_Province: DC
Postal_Code: 20001
Country: USA
Contact_Facsimile_Telephone: 202-727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30am - 5:30pm
Process_Step:
Process_Description:
OCTO added SMD representative contact information to the database from a spreadsheet the ANC office provided.
Process_Date: 20100325
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: OCTO
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Server=10.1.11.144; Service=5151; User=dcgis_user; Version=SDE.DEFAULT
Process_Date: 20100527
Process_Time: 15204700
Process_Step:
Process_Description:
Updated boundaries of SMD 3D01 & 3D06 based on the D.C. Law 14-133, 14-310, 14-213. Also cleaned up the name column, made it more consistent with the ANC naming.
Process_Date: 20100610
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Server=10.1.11.144; Service=5151; User=dcgis_user; Version=SDE.DEFAULT
Process_Date: 20100630
Process_Time: 10160200
Process_Step:
Process_Description: Updated boundaries of SMD 8D04 & 8D05 based on the D.C. Law.
Process_Date: 20100630
Process_Step:
Process_Description: Updated SMD representative contact information.
Source_Used_Citation_Abbreviation: \\10.2.11.18\e$\DataLoad\SMD02Ply.mdb
Process_Date: 20110503
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: OCTO
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 0
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: 1900
Lambert_Conformal_Conic:
Standard_Parallel: 38.300000
Standard_Parallel: 39.450000
Longitude_of_Central_Meridian: -77.000000
Latitude_of_Projection_Origin: 37.666667
False_Easting: 400000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000063
Ordinate_Resolution: 0.000063
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: DCGIS.SMD02Ply
Entity_Type_Definition: DC Template
Entity_Type_Definition_Source: DCOP
Attribute:
Attribute_Label: WEB_URL
Attribute_Definition: Web site url
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: GIS_ID
Attribute_Definition: Sequential OCTO-GIS number
Attribute:
Attribute_Label: SMD_ID
Attribute_Definition: SMD identifier
Attribute:
Attribute_Label: ANC_ID
Attribute_Definition: ANC identifier
Attribute:
Attribute_Label: NAME
Attribute_Definition: SMD Name
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: CHAIR
Attribute:
Attribute_Label: REP_NAME
Attribute:
Attribute_Label: LAST_NAME
Attribute:
Attribute_Label: FIRST_NAME
Attribute:
Attribute_Label: MIDDLE_NAME
Attribute:
Attribute_Label: ADDRESS
Attribute:
Attribute_Label: EMAIL
Attribute:
Attribute_Label: ZIP
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: APT
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: SF
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: SHAPE.LEN
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: D.C. Office of the Chief Technology Officer
Contact_Person: GIS Data Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 200 I Street SE, 5th Floor
City: Washington
State_or_Province: DC
Postal_Code: 20001
Country: USA
Contact_Facsimile_Telephone: (202) 727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30 am - 5:00 pm
Resource_Description: Downloadable Data
Distribution_Liability:
For data terms and conditions, go to <http://dc.gov/page/terms-and-conditions-use-district-data>
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ACCESS2000
File_Decompression_Technique: No compression applied
Transfer_Size: 0.031
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.draft.dcgis.com/data_catalogue.asp>
Access_Instructions: Local area network
Ordering_Instructions: All data is available at <http://opendata.dc.gov>
Metadata_Reference_Information:
Metadata_Date: 20110506
Metadata_Review_Date: 01/07/04
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: D.C. Office of the Chief Technology Officer
Contact_Person: GIS Data Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 200 I Street SE, 5th Floor
City: Washington
State_or_Province: DC
Postal_Code: 20001
Country: USA
Contact_Facsimile_Telephone: (202) 727-5660
Contact_Electronic_Mail_Address: [email protected]
Hours_of_Service: 8:30 am - 5:00 pm
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None.
Metadata_Use_Constraints: None.
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.12 on Thu Jun 25 15:15:19 2015