The District of Columbia

Points of Interest (Address Alias Names)

Points of Interest (Address Alias Names)

by Department of Consumer and Regulatory Affairs on Weekly

Keywords
About: Address Point, Address, Street Number, Quadrant, location, Point Of Interest, Street Address, Building Number, Address Location, Street Type, Landmark
Taking place at: Washington, D.C., District of Columbia, DC, DC GIS, DCGIS

Abstract

Address Alias Point locations. The dataset contains locations and attributes of Address Alias points, created as part of the Master Address Repository (MAR) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.

It contains the addresses alias names in the District of Columbia which are typically placed on the buildings. These alias names represent named features such as:

- Schools
- Federal Buildings
- Military Installations
- Hospitals
- Museums
- Monuments
- University Structures
- Fire and Police Stations
- Libraries
- Metro Facilities
- Historical Landmarks
- Recreation Centers

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

This data is used for the planning and management of Washington, D.C. by local government agencies.

Use constraints

Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Point of contact

GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5:30 pm

Credits

DC Department of Consumer and Regulatory Affairs
DC Office of the Chief Technology Officer

Data accuracy

Accuracy
Data believed to be complete and accurate, subject to change. In process of validation by source and/or responsible agency.

OCTO GIS staff review a sample portion of the alias records.

Logical consistency
Validated by source and/or responsible agency

Completeness
The address alias points contain most of the categories of landmark and key named features in the District, as of current project requirements. As these requirements change, additional categories may be added.

Horizontal positional accuracy
Building centroids were generated using ArcGIS and used to generate the first pass of MAR points. On the second pass, it was found that the OwnerPts were not always on buildings and therefore had to be moved to the building centroids. Wherever building footprints did not exist in the building layer but the building appeared on the ortho, a visual center of the building on the ortho was used.

Vertical positional accuracy
N/A

Lineage / Sources

  • DC GIS Database
    database, attributes and location
    source layers
    by Office of the Chief Technology Officer, 2005
Lineage / Processes
GIS Data Coordinator
in Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: 202-727-5660
hours: 8:30am - 5:30pm
OCTO GIS used the names and addresses from the feature layers in the DC GIS database to create aliases in the DC Master Address Repository (MAR).

1. Staff geocode the feature layer to the MAR. This determines which features are in the MAR and which ones need to be added.

2. Staff then research and verify addresses for the rejected features and prepare them for inclusion in the MAR.

3. The feature names are standardized and completely spelled out (no abbreviations).

4. The names are added to the alias tables in the MAR using the MAR address ID and the feature name.

Since some named places in DC are known by several names, the alias layer contains stacked points. Each point represents an alias for the named place.

Distribution

Most DC GIS datasets can be downloaded from "http://dcgis.dc.gov" on the data center page. Orders can also be made by contacting OCTO GIS at "dcgis@dc.gov", especially for datasets not available for download.

Distribution liability
Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Distributed by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5 pm

Entity

AddressAliasPt

Attributes

  • SMD_2002 / ESRI
    Internal feature number.
  • SMD_2012 / ESRI
    Internal feature number.
  • SHAPE / ESRI
    Feature geometry.
  • ADDRESS_ID
    Address Identifier
  • ADDRALIAS_
  • STATUS
    Address Alias Status
  • ALIASTYPE
    Address Alias Type
  • ALIASNAME
    Address Alias Name
  • ADDRNUM
    Address Number
  • STNAME
    Street Name
  • ADDRNUMSUF
  • WARD
    Address ward value
  • FULLADDRES
  • METADATA_I
  • SITE_ADDRE
  • ROADWAYSEG
  • XCOORD
    X Coordinate of Address Alias Point
  • SSL
    Square suffix lot
  • ENTRANCETY
  • STREET_TYP
  • TYPE_
    Address Alias type
  • QUADRANT
    Address Alias quadrant value
  • CITY
    Address Alias City
  • STATE
    Address Alias State
  • SQUARE
    Address Alias Square Value
  • SUFFIX
    Address Alias Suffix value
  • NATIONALGR
  • LOT
    Address Alias lot value
  • ANC
    Address Alias Advisory Neighborhood Commission
  • ROC
    Address Alias Police Regional Operations Command Area
  • POLDIST
    Address Alias Police District
  • ASSESSMENT
  • ASSESSME_1
  • ZIPCODE4
    Address Alias Zip Code
  • YCOORD / ESRI
    Y Coordinate of Address Alias Point
  • Shape / ESRI
    Feature geometry.
  • STATUS_ID
    Address Alias Status ID
  • ZIPCODE
    Address Alias Zip Code
  • SMD
    Address Alias Single Member District value
  • PSA
    Address Alias Police Service Area
  • CENSUS_TRA
  • VOTE_PRCNC
  • CLUSTER_
    Address Alias Neighborhood Cluster Value
  • HOTSPOT
    Address Alias Hot Spot Name
  • CFSA_NAME / ESRI
    Address Alias CFSA Area Name
  • NEWCOMMSEL
  • NEWCOMMCAN
  • FOCUS_IMPR
  • WARD_2002
  • WARD_2012
  • ANC_2002
  • ANC_2012

Metadata

FGDC Content Standards for Digital Geospatial Metadata / FGDC-STD-001-1998 as of 20121011

Provided by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

phone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.
fax: (202) 727-5660
hours: 8:30 am - 5:30 pm