onemap_prod.SDEADMIN.schlpl

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Frequently-anticipated questions:

What does this data set describe?

Title: onemap_prod.SDEADMIN.schlpl
Abstract:
CGIA developed this set of point locations for public schools in North Carolina as part of a project for the NC Division of Emergency Management. School data serves multiple purposes, but foremost for this project, public schools are vital facilities in terms of emergency management. Many schools serve as shelters and all are critical to hazard vulnerability planning and emergency response. CGIA used two methods to generate point locations for public schools. First, CGIA used a road network from GDT, Inc. with ArcView GIS to geocode the addresses. The initial process matched 60 percent of the schools with a point on the road network. Point locations are approximate, based on an interpolation of street numbers along street segments. Second, CGIA worked with the NC Department of Public Instruction to use the Transportation Information Management System (TIMS) to determine school locations. Many of these point locations are coincident with the center of school buildings on digital imagery or along driveways and may be more accurate than points located using the first method.
Supplemental_Information:
system filename: schlpl file size = 0.7 mb
Revisions and updates to this layer include: 

6) filename: schlpl1208    Regular update.  December 29, 2008.

6) filename: schlpl1107    Regular update.  November 27, 2007.

5) filename: schlpl1206    Regular update.  December 28, 2006.

5) filename: schlpl1104    Regular update.  November 11, 2004.

4) filename: schlpl504    The 5/17/04 update:
Points (from west to east) were verified/corrected using a backcover
of the 1998 Color Infrared Orthophotography images.  (Reviewed points
will have a '1' in the reviewed item.  Points that were moved will
have a 'yes' in the ptmoved item.)

3) filename: schlpl404    The 4/20/04 update:
The following public school point locations were corrected:
NORTHSIDE ELEMENTARY
PASQUOTANK CO HIGH
Correct locations were found on the greatschools.net website.

2) filename: schlpl703    Regular update.  July 3, 2003.

1) filename: schlpl701    The 07/12/01 version was the first
released version of this data.
  1. How should this data set be cited?

    NC Department of Public Instruction, 20081229, onemap_prod.SDEADMIN.schlpl: NC Department of Public Instruction, Raleigh, North Carolina.

    Online Links:

    • www.nconemap.com

    Other_Citation_Details: NCCGIA distributes this dataset

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -84.310762
    East_Bounding_Coordinate: -75.497491
    North_Bounding_Coordinate: 36.557152
    South_Bounding_Coordinate: 33.818065

  3. What does it look like?

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

    Beginning_Date: 23-Aug-1999
    Ending_Date: 29-Dec-2008
    Currentness_Reference: Data creation and revision dates

  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: _Method: None
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point (2551)
      • Label point (2551)

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

      Grid_Coordinate_System_Name: State Plane Coordinate System 1983
      State_Plane_Coordinate_System:
      SPCS_Zone_Identifier: 3200
      Lambert_Conformal_Conic:
      Standard_Parallel: 34.333333
      Standard_Parallel: 36.166667
      Longitude_of_Central_Meridian: -79.000000
      Latitude_of_Projection_Origin: 33.750000
      False_Easting: 609601.220000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.002048
      Ordinates (y-coordinates) are specified to the nearest 0.002048
      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?

    onemap_prod.SDEADMIN.schlpl
    Point locations of Public Schools in North Carolina (Source: NC Department of Public Instruction)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    LEA_SCHOOL
    Unique 6-digit school identification number LEA stands for 'Local Education Agency. This is synonymous with a local school system or a local school district, indicating that a public board of education or other public authority maintains administrative control of the public schools in a city or county. (Definition from Public Schools of NC website.) (Source: NC Department of Public Instruction)

    Frequency of measurement: None planned

    Unique schools identification numbers vary

    PTMOVED
    Tracking of points moved during CGIA editing process (Source: NCCGIA)

    Frequency of measurement: As needed

    ValueDefinition
    (blank)Point did not need to be moved (or has not been reviewed)
    noPoint needs to be moved, but not sure where
    yesPoint was moved

    COMMENTS
    Comments made by CGIA during editing process (Source: NCCGIA)

    Frequency of measurement: As needed

    Comments vary

    REVIEWED
    Tracking of points reviewed during CGIA editing process (Source: NCCGIA)

    Frequency of measurement: As needed

    ValueDefinition
    1Point was reviewed
    2Ortho image not availabe at time of edits
    (blank)Point has not yet been reviewed

    SCHOOL_NAM
    School name (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    School names vary

    PRINCIPAL
    Name of school principal (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    School principal names vary

    STREET_LON
    Physical address of school (long version) (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    City names vary

    PHYS_ADDR
    Physical address of school (with some abbreviations) (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Addresses of schools vary

    PHYS_CITY
    Physical city in which school is located (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    City names vary

    PHYS_ZIP
    Physical zip code in which school is located (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Physical zip codes vary

    PHONE
    Phone number of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Phone numbers vary

    BGN_GRADE
    Beginning grade of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Beginning grades vary

    END_GRADE
    Ending grade of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Ending grades vary

    MAIL_ADDR
    Mailing address of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Addresses of schools vary

    MAIL_CITY
    Mailing city of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    City names vary

    MAIL_ZIP
    Mailing zip code of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Zip codes vary

    FAX
    Facsimile number of school (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Facsimile numbers vary

    ACCR_STAT
    Accreditation status (Source: NCCGIA)

    Frequency of measurement: As needed

    ValueDefinition
    SAIs accredited (by Southern Assoc. of College & Schools)
    (blank)Is not accredited

    SCH_TYPE
    School type (Source: NCCGIA)

    Frequency of measurement: As needed

    ValueDefinition
    CCharter School
    PRegular Public School

    SCH_PTYPE
    School program type (Source: NCCGIA)

    Frequency of measurement: As needed

    ValueDefinition
    AAlternative
    EExtended Day Only
    HHospital
    MMagnet (Traditional Calendar)
    NMagnet (Year-Round Calendar)
    RRegular (Traditional Calendar)
    SSpecial Ed (Traditional Calendar)
    VVocational Ed
    YYear-Round Only
    ZExtended Day & Regular

    EMAIL_ADDR
    School email address (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Emails vary.

    URL_ADDRESS
    School URL address (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    URLs vary.

    NUMB_TEACH
    Number of teachers (Source: NC Department of Public Instruction)

    Frequency of measurement: As needed

    Number of teachers vary

    Entity_and_Attribute_Overview: A point dataset depicting school locations.
    Entity_and_Attribute_Detail_Citation: None

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?

    NC Dept. of Public Instruction; North Carolina Center for Geographic Information and Analysis

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

    Derek Graham
    NC Department of Public Instruction
    Transportation Services Chief
    301 N. Wilmington Steet
    Raleigh, North Carolina 27601-2825
    U.S.A.

    (919) 807-3571 (voice)
    (919) 807-3578 (FAX)
    dgraham@dpi.state.nc.us

    Hours_of_Service: 8:00 am to 5:00 pm
    Contact_Instructions: Preferred contact is by mail or telephone

Why was the data set created?

This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).

How was the data set created?

  1. From what previous works were the data drawn?

    None (source 1 of 1)
    NC Department of Public Instruction, 1986, Transportation Information Management System (TIMS): NC Department of Public Instruction, Raleigh, North Carolina.

    Other_Citation_Details: Generated at NCCGIA
    Type_of_Source_Media: computer program
    Source_Contribution: Locations of Schools by address

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

    Date: 29-Dec-2008 (process 1 of 1)
    Initial point locations were generated using geocoding in Arcview. The resulting file was checked to determine which addresses did not match. These schools were located using the NC Department of Public Instruction Transportation Information Management System data. These locations were then added to the school coverage interactively, using GDT roads, Digital Raster Graphics and Digital Orthophoto Quarter Quadrangles as backcovers. For each revision, comparison as made between the new schools listing and the previous version. New schools locations are generated using the geocoding and interactive procedures listed above.

    Person who carried out this activity:

    NC Center for Geographic Information and Analysis
    GIS Analyst
    301 N. Wilmington Street, Suite 700
    Raleigh, North Carolina 27601-2825
    U.S.A.

    (919) 733-2090 (voice)
    (919)715-0725 (FAX)
    dataq@ncmail.net

    Hours_of_Service: 8am to 5pm
    Contact_Instructions: Phone and electronic mail preferred
  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?

    The attributes were loaded into the GIS from data supplied by the NC Dept. of Public Instruction. Minimal QC was performed during the digitization process on attributes. The values in the Dept. of Public Instruction data are reliable.

  2. How accurate are the geographic locations?

    The majority of school locations were generated using geocoding in Arcview. The point generated in the processing would be snapped to the road identified in the address field. Therefore, point locations are coincident with the GDT roads data.

  3. How accurate are the heights or depths?

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

    The data represents those public schools which were either address matched using ArcView geocoding or matched manually use the best available techniques. This data does not contain all the public school locations in North Carolina.

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

    Using ESRI's ARC/INFO GIS software, the dataset was built for point topology using the "build" command. Topology has not been edited since the last build or clean.

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:
Acknowledgement of products derived from this data set should cite the following: The source of the Public School Locations data is NC OneMap. Earlier versions of this dataset may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.

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

    NC Center for Geographic Information and Analysis
    Production Services
    301 N. Wilmington Street, Suite 700
    Raleigh, North Carolina 27601-2825
    U.S.A.

    (919) 733-2090 (voice)
    (919)715-0725 (FAX)
    dataq@ncmail.net

    Hours_of_Service: 8am to 5pm
    Contact_Instructions: Phone and electronic mail preferred
  2. What's the catalog number I need to order this data set?

    Public School Locations

  3. What legal disclaimers am I supposed to read?

    NCCGIA is charged with the development and maintenance of NC OneMap and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop this dataset may be reflected in the data supplied. The user must be aware of possible conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this dataset without its current, compliant metadata record. The use of trade names or commercial products does not constitute their endorsement by NCCGIA or North Carolina State Government.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Data can be customized on a cost-recovery basis. Contact dataq@ncmail.net or 919-733-2090 for more information.

  6. What hardware or software do I need in order to use the data set?

    All formats available from www.nconemap.com are in ESRI shapefile. Other formats are available on a cost-recovery basis - contact dataq@ncmail.net or 919.733.2090 for more information. Format compatibility is the user's responsibility.

Who wrote the metadata?

Dates:
Last modified: 06-Mar-2007
Metadata author:
North Carolina Center for Geographic Information and Analysis
c/o Cheryl Pearce
Technology Support Analyst
301 N. Wilmington Street, Suite 700
Raleigh, North Carolina 27601-2825
U.S.A.

(919) 733-2090 (voice)
(919)715-0725 (FAX)
dataq@ncmail.net

Hours_of_Service: 8am to 5pm
Contact_Instructions: Phone and electronic mail preferred
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.9.5 on Thu Feb 12 14:57:04 2009