PublicGIS_DB.AC.CityLimits

Metadata also available as - [Outline]

Frequently anticipated questions:


What does this data set describe?

Title: PublicGIS_DB.AC.CityLimits
Abstract: Alameda County city boundaries. Verified as of March 29, 2012
  1. How should this data set be cited?

    , PublicGIS_DB.AC.CityLimits.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -122.373842
    East_Bounding_Coordinate: -121.469339
    North_Bounding_Coordinate: 37.906695
    South_Bounding_Coordinate: 37.454193

  3. What does it look like?

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

  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?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • GT-polygon composed of chains (15)

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

      The map projection used is WGS 1984 Web Mercator Auxiliary Sphere.

      Projection parameters:
      Other_Projection's_Definition:
      PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]-20037700-302411001000001010.0010.0010.001true1021003857

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.0001
      Ordinates (y-coordinates) are specified to the nearest 0.0001

      The horizontal datum used is D WGS 1984.
      The ellipsoid used is WGS 1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.

  7. How does the data set describe geographic features?

    PublicGIS_DB.AC.CityLimits

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    NAME
    Area of feature in internal units squared. (Source: ESRI)

    Positive real numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    OBJECTID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape.STLength()
    Internal feature number. (Source: Esri)

    Sequential unique whole numbers that are automatically generated.


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?

    Alameda County CDA (Community Development Agency)

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


Why was the data set created?

Defines extent of city boundaries in Alameda County


How was the data set created?

  1. From what previous works were the data drawn?

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

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


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


How can someone get a copy of the data set?

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

Access_Constraints: None
Use_Constraints: Internal use

  1. Who distributes the data set?[Distributor contact information not provided.]

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    See access and use constraints information.

  4. How can I download or order the data?


Who wrote the metadata?<