Bay Area General Outline

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  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?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• 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?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   ESRI, and DTIS, 20040101, Bay Area General Outline.

   Online Links:

   • Server=tisent20; Service=port:5151; User=sfgis; Version=SDE.DEFAULT

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -124.875453

   East_Bounding_Coordinate: -120.464711

   North_Bounding_Coordinate: 39.652123

   South_Bounding_Coordinate: 36.285549

3. What does it look like?

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

   Calendar_Date: 01-Jan-2004

   Currentness_Reference: publication date

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):

      • G-polygon (3)

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

      The map projection used is Lambert Conformal Conic.

      Projection parameters:

      Standard_Parallel: 37.066667

      Standard_Parallel: 38.433333

      Longitude_of_Central_Meridian: -120.500000

      Latitude_of_Projection_Origin: 36.500000

      False_Easting: 6561666.666667

      False_Northing: 1640416.666667

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.001024
      Ordinates (y-coordinates) are specified to the nearest 0.001024
      Planar coordinates are specified in survey feet

      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.
      

      Vertical_Coordinate_System_Definition:

      Altitude_System_Definition:

      Altitude_Resolution: 1.000000

      Altitude_Encoding_Method:

      Explicit elevation coordinate included with horizontal coordinates

7. How does the data set describe geographic features?

   SDE.SFGIS.BAYAREA_GENERAL

   OBJECTID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   AREA_NAME

   Name of area

   Value	Definition
   SAN FRANCISCO
   BAY AND OCEAN
   OTHER

   SHAPE

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   SHAPE..Area()

   Area of feature (Source: ESRI)

   SHAPE..Length()

   Perimeter of feature (Source: ESRI)

Who produced the data set?

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

2. Who also contributed to the data set?

   ESRI, DTIS

3. To whom should users address questions about the data?
   Department of Telecommunications and Information Services
   875 Stevenson Street
   San Francisco, CA 94103
   USA
   

   415-554-0800 (voice)
   415-554-0886 (FAX)
   gis@sfgov.org
   

   Hours_of_Service: 9am - 5pm

Why was the data set created?

For use as background in web applications.

How was the data set created?

1. From what previous works were the data drawn?

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

   (process 1 of 1)

   Dowloaded data from ESRI. Dissolved polygons on County field. Merged counties other San Francisco as "Other" counties. Added Bay and Ocean polygon surrounding Bay Area.

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?

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

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

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

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: None.

1. Who distributes the data set? (Distributor 1 of 1)
   Department of Telecommunications and Information Services
   875 Stevenson Street
   San Francisco, CA 94606
   USA
   

   415-554-0800 (voice)
   415-554-0886 (FAX)
   gis@sfgov.org
   

   Hours_of_Service: 9am - 5pm

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

   Downloadable Data

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?

Who wrote the metadata?

Dates:

Last modified: 01-Aug-2005

Metadata author:

Department of Telecommunications and Information Services
875 Stevenson St
San Francisco, CA 94606
USA

415-554-0800 (voice)
415-554-0886 (FAX)
gis@sfgov.org

Hours_of_Service: 9am - 5pm

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>