Department of Telecommunications and Information Services, and Bureau, US Census , August 2003, SFGIS US Census 2000 Blocks (No Water).Online Links:
- Server=tisent20; Service=5151; User=sfgis; Version=SDE.DEFAULT
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Lambert Conformal Conic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000512
Ordinates (y-coordinates) are specified to the nearest 0.000512
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.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
US Census Bureau; SFGIS.
415-554-0800 (voice)
415-554-0886 (FAX)
gis@sfgov.org
Built to allow meaningful analysis by allowing accurate overlay with other SFGIS Library layers.
Are there legal restrictions on access or use of the data?
- Access_Constraints: See standard SFGIS access language
- Use_Constraints: See standard SFGIS use language.
Downloadable Data
415-554-0800 (voice)
415-554-0886 (FAX)
gis@sfgov.org