NC05_521

Metadata also available as

Frequently-anticipated questions:


What does this data set describe?

Title: NC05_521
Abstract:
The dataset contains the geographic boundaries for The U.S. Department of Housing and Urban Development's Continuum of Care (CoC) areas. The dataset is current for 2005 and contains the geographic boundaries for all of the 2005 claimed CoC areas and includes funding status information.
  1. How should this data set be cited?

    U.S. Department of Housing and Urban Development (HUD), 06/2006, NC05_521.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -81.170583
    East_Bounding_Coordinate: -80.409073
    North_Bounding_Coordinate: 36.337339
    South_Bounding_Coordinate: 35.445812

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 1901
    Ending_Date: 1912
    Currentness_Reference: 2005 Calender Year

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: Boundaries
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • G-polygon (1)

    2. What coordinate system is used to represent geographic features?

      The map projection used is Albers Conical Equal Area.

      Projection parameters:
      Standard_Parallel: 20.000000
      Standard_Parallel: 60.000000
      Longitude_of_Central_Meridian: -96.000000
      Latitude_of_Projection_Origin: 40.000000
      False_Easting: 0.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000256
      Ordinates (y-coordinates) are specified to the nearest 0.000256
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?

    NC05_521

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    STATUS
    Funding code values. These values correspond to the 'Year' attribute.

    ValueDefinition
    CCompetitively Funded
    UNon-competitively Funded.
    NNot Funded.

    YEAR

    COCNUM

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    SEQ

    05COCNUM

    COCNAME

    STATE

    Entity_and_Attribute_Overview:
    FID & Shape are internal identifiers. COC_NUM & 05COCNUM are HUD codes for the individual CoCs. SEQ is the CoC sequence number. COC_NAME is the CoC name identifier. Status is the funding code for the individual CoCs. State is the state in which the CoC is contained or classifed as being contained (in cases where CoCs cross state boundaries). Year is the funding year.
    Entity_and_Attribute_Detail_Citation:
    Department of Housing and Urban Development Continuum of Care Homeless Assistance Programs, 69 Fed. Reg. 27495 (May 14, 2004).


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    This data set was developed by the U.S. Department of Housing and Urban Development (HUD).

  3. To whom should users address questions about the data?

    The U.S. Department of Housing and Urban Development, Community Planning and Development, Office of Special Needs Assistance Programs
    451 Seventh Street, SW Room 7262
    Washington, DC 20410
    USA

    (202) 708-0614 (voice)
    cpd_web_mail@hud.gov

    Hours_of_Service: 9:00 a.m. to 5:00 p.m. Eastern Standard Time


Why was the data set created?

The U.S. Department of Housing and Urban Development is providing these data sets for use by continuum of care grantees, homeless services planners and research institutions. Because HUD provides competitive funding for homeless services through a continuum of care structure that is developed at the local level, outside research based on this structure cannot be accomplished without the provision of the geographic boundaries and related data provided herein. Therefore, this data set was developed to make the Continuum of Care process and funding as transparent as possible to the public.


How was the data set created?

  1. From what previous works were the data drawn?

    ESRI Data and Maps Media Kit. (source 1 of 2)
    , ArcGIS 9 ESRI Data & Maps Media Kit.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 83,000,000
    Source_Contribution: State, County, Territiory and Municipality boundary data.

    2000 Census County Sub-division boundary data. (source 2 of 2)
    U.S. Census Bureau, U.S. Census Bureau Census 2000 County Subdivisions.

    Online Links:

    Type_of_Source_Media: online
    Source_Scale_Denominator: 13,000,000
    Source_Contribution: County Sub-division boundary data.

  2. How were the data generated, processed, and modified?

    Date: 1902 (process 1 of 4)
    In order to create the boundaries for the 2005 Continuums of Care, data was combined through a series of steps based on the HUD geocode definitions. The basis of CoC geographic boundaries are the State (or Territory), County (Municipio in Puerto Rico), County Subdivision (Township) or Municipal (City) boundaries with which each CoC is associated. The boundary for any particular CoC can be a combination of any of the above mentioned geographic boundary categories. CoC boundaries were calculated by the intersection of the above mentioned geographic boundary categories, as defined by the HUD geocodes. The process involved the following steps:

    1) Create a list of 2005 CoCs with all the associated type data, geocodes, and CoC ID numbers.

    2) Divide the list into its component County, County Subdivision or Municipal associations based on an analysis of the type data and geocode.

    3) Join the lists to the corresponding GIS boundary files for County, County Subdivision or Municipalities, and

    4) Merge the resulting boundaries and dissolve polygons based on the CoC number to create the appropriate CoC boundaries.

    (process 2 of 4)
    Metadata imported.

    Data sources used in this process:

    • C:\DOCUME~1\JPOLIV~1\LOCALS~1\Temp\xml5D.tmp

    (process 3 of 4)
    Metadata imported.

    Data sources used in this process:

    • F:\Deliverables\2004_National_CoC_Dataset\Shapefiles\2004_CoC_BND_National_dataset.shp.xml

    (process 4 of 4)
    Dataset copied.

    Data sources used in this process:

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Non-internal attributes are all HUD provided data and are accurate for the 2005 CoC calender year.

  2. How accurate are the geographic locations?

    The dataset is dervied from original State, County and territory Boundary data at a scale of approximately 1:80,000,000 and County Subdivision data at a scale of approximately 1:13,000,000. The dataset may not be suitable for high-precision measurement applications such as engineering calculations, property boundary analysis, or other uses that might require highly accurate measurements of the earth's surface.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    The data set is a complete representation of the input HUD geocodes.

  5. How consistent are the relationships among the observations, including topology?

    The data set is composed of an aggregate of State and Territory, County, Municipal and County Subdivision (Township) boundary data. The resulting aggregate polygons have been cleaned and are accurate representations of the CoC geographic areas as decscribed by the HUD geocodes. Polygon accuracy is a function of the original dataset scale and congurency of the different polygon boundary files used to define the CoC boundaries.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
The dataset can be downloaded from The U.S. Department of Housing and Urban Development website, <http://www.hud.gov/offices/cpd/homeless/local/index.cfm>. The dataset may only be re-distributed in original form and may not be distributed in part or in modified form.
Use_Constraints:
The dataset is available for public use. The dataset, or any portions thereof, may not be modified from its original form or used for any commerical purposes without written permission from The U.S. Department of Housing and Urban Development. The U.S. Department of Housing and Urban Development must be cited as the source when this dataset is used in publications, analysis or other documents for public use.

  1. Who distributes the data set? (Distributor 1 of 1)

    U. S. Department of Housing and Urban Develpoment (HUD), Community Planning and Development, Office of Special Needs Assistance Program
    451 Seventh Street, SW Room 7262
    Washington, DC 20410
    USA

    (202) 708-0614 (voice)
    cpd_web_mail@hud.gov

    Hours_of_Service: 9:00 a.m. to 5:00 p.m. Eastern Standard Time
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    HUD and the dataset and metadata authors assume no responsibility for the use or misuse of the dataset. No warranty, expressed or implied is made with regard to the accuracy of the spatial accuracy, and no liability is assumed by the U.S. Government in general, the dataset creators or the U.S. Department of Housing and Urban Development specifically, as to the spatial or attribute accuracy of the data.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 30-Mar-2006
Metadata author:
The U.S. Department of Housing and Urban Development, Community Planning and Development, Office of Special Needs Assistance Programs
451 Seventh Street, SW Room 7262
Washington, DC 20410
USA

(202) 708-0614 (voice)
cpd_web_mail@hud.gov

Hours_of_Service: 9:00 a.m. to 5:00 p.m. Eastern Standard Time
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Generated by mp version 2.8.6 on Thu Mar 30 20:41:56 2006