pabnd

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?
• 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?

Title: pabnd

Abstract:

The data includes the county and state boundaries for the Commonwealth of Pennyslvania. It was generated to assist USDA-NRCS in the production of common soil survey area boundaries.

1. How should this data set be cited?

   USDA-NRCS PA Map Compilation and Digitizing Center, 2002, pabnd.

   Online Links:

   • \\CRAUL\E$\data\arcdata\pabnd

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -80.519358

   East_Bounding_Coordinate: -74.689772

   North_Bounding_Coordinate: 42.434442

   South_Bounding_Coordinate: 39.719863

3. What does it look like?

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

   Calendar_Date: 2002

   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):

      • Complete chain (255)
      • Label point (68)
      • GT-polygon composed of chains (68)
      • Point (88)

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      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?

   pabnd.pat

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   AREA

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

   Positive real numbers that are automatically generated.

   PERIMETER

   Perimeter of feature in internal units. (Source: ESRI)

   Positive real numbers that are automatically generated.

   PABND#

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   PABND-ID

   User-defined feature number. (Source: ESRI)

   CNTY_NAME

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • USDA-NRCS PA Map Compilation and Digitizing Center

2. Who also contributed to the data set?

   The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data.

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

   Tim Craul
   United States Department of Agriculture, Natural Resource Conservation Service
   Soil Specialist
   

   814 865 2306 (voice)
   814 863 7043 (FAX)
   tim.craul@pa.usda.gov
   

This dataset was designed with the intent to be used for clipping county digital soils coverages for the Commonwealth of Pennsylvania as well as to be used as clipping other datasets to the boundary of the soils layer. The data is used to also provide common boundaries between survey areas.

1. From what previous works were the data drawn?

   USGS1 (source 1 of 2)

   United State Geological Survey, 2002, Topographic Quadrangle Digital Raster Graphic: Untied States Geological Survey, Reston, VA.

   Type_of_Source_Media: electronic media

   Source_Scale_Denominator: 1:24000

   Source_Contribution: Location of county and state boundaries

   USGS2 (source 2 of 2)

   United States Geologic Survey, 2002, Digital Orthophotographs: United States Geological Survey, Reston, VA.

   Type_of_Source_Media: remotely sensed image

   Source_Scale_Denominator: 1:24000

   Source_Contribution:

   Locations of roads and streams that corrispond with county and state boundaries.

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

   Date: 2002 (process 1 of 1)

   The digital orthophotograph (Mr Sid version) was obtained from the Pennsylvania Spatial Data Access site and overlayed with the cropped collar versions of the USGS digital raster graphic topoquadrangle to determine the correct placement of the state and county boundaries. The boundaries were digitized heads up using ArcView 8.1 at a scale of 1:8000. Where landmarks noted on the imargery did not match the digital topographic quadrangle, the line was adjusted to fit the imargery, not the topoquadrangle.

   Data sources used in this process:

   • USGS1, USGS2

1. How well have the observations been checked?

2. How accurate are the geographic locations?

   The boundaries were placed at a 1:8000 scale using ArcVew 8.1 functions of overlaying transparent digital orthophotos over the digital raster graphic topoquadrangles.

3. How accurate are the heights or depths?

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

   Data was generated using both the digital orthophotographs and the digital raster grahic topoquadrangles provided by USGS to the Pennsylvania Spatial Data Access facility achieve an accurate boundary based on the imargery at the publication date. The digital raster graphic topoquadrangle was used in areas where the imargery was obscured or landmarks were not found to place the county and state boundary.

   All boundaries are based on USGS line placement as noted on the digital raster graphic topographic quadrangles.

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

   Certain node/geometry and topology GT- polygon/chain relationships are collected or generated to satisfy topological requirements. Some of these requirements include: chains must begin and end at nodes, chains must connect to each other at nodes, chains do not extend through nodes, left and right GT-polygons are defined for each chain element and are consistent throughout, and the chains representing the limits of the file (neatline) are free of gaps. The tests of logical consistency are performed using vendor software.

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

Access_Constraints: None

Use_Constraints:

The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data.

This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data.

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

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?
   • Availability in digital form:

     Data format:	Size: 0.830

   • Cost to order the data:

Dates:

Last modified: 25-Sep-2002

Metadata author:

USDA-NRCS PA Map Compilation and Digitizing Center
Soil Specialist
116 ASI Building
University Park, Pennsylvania 16802
USA

814 865 2306 (voice)
814 863 7043 (FAX)

Metadata standard:

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

Metadata extensions used:

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