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Guidance Documents TechGis Part 3c

 

C. Metadata Requirements for Digital Map Submissions

Metadata is information/data about the map submissions and is necessary to evaluate mapped data accuracy and acceptability. Since the mapped data required for submission under the Technical rules is relatively simple, it is important to keep the metadata structures supporting them simple. This information will be critical for the DEP to ensure rapid accurate installation of the maps and data on the Department's. electronic data management system.

Following are the points of information that must be completed with map submissions:

  1. Identification Information

    • Description - An explanation of what is intended to be represented by the map data submissions.
    • Abstract - A brief summary identifying the different data sets being submitted and the source of information that is their basis.
    • Purpose/Brief description - A summary of the purpose of the data submissions.
    • Supplemental information - Any other descriptive information about the data that may be important.
    • Currentness Reference - The time period that the data submissions are based upon.

  2. Data Quality Information

    • Attribute Accuracy - An assessment and explanation of the spatial accuracy of the mapped data submissions.
    • Quantitative Attribute Accuracy Assessment - What was done to identify and evaluate the accuracy of the mapped feature locations.
    • Completeness Report - Information about omissions, selection criteria, generalizations, definitions used, and other activities used to derive the data sets. Include difficulties, problems and questions in establishing feature locations.
    • Lineage - Information about the process (GPS, survey, manual digitizing, scanning) used to generate the lines, points and polygons. Include the methods and technologies employed as well as sources of data used to construct data sets.
    • Source Scale Denominator - The denominator of the representative fraction on a map, i.e., the scale referenced in meters. For example on 1:24000 scale map, the source scale denominator is 24000, where 1" on the map = 24000 inches on the ground.
    • Type of Source Media - The medium of the source of the data sets, (for example, paper, mylar, acetate, microfiche, CD-ROM, online, tape, transparency).
    • Source Currentness Reference - How recent is the source of information that the source data is based upon.
    • Process Date - The date when the mapped data submissions were completed.

  3. Spatial Data Organization

    • Direct Spatial Reference Method - The system of objects used to represent space in the data set. Vector (point, line, polygon) or Raster.

  4. Spatial Reference

    • Grid Coordinate System - A plane-rectangular coordinate system based on, and adjusted to, a map projection so that geographic positions can be readily transformed to and from plane coordinates, (for example NJ State Plane Feet).
    • Horizontal Datum Name - Identification given to the reference system used for defining the coordinates of points. (Should always be NAD 83).

  5. Attribute Information

    • Attribute Label - The name of the attribute along with any description necessary to clarify or explain the data set.

  6. Metadata Reference Information

    • Metadata Date - The date that the metadata were created or updated.
    • Metadata Contact - The party and agency responsible for metadata information.

  7. Citation Information

    • Originator - The name of an organization or individual that developed the data set
    • Title - The name by which the data set is known
    • Author's Notes - Special notes that the author may have for this data set.

  8. Contact Information

    • Contact Person(s) Primary - The person, and the affiliation of the person, associated with the data set.
    • Contact Organization - The name of the organization affiliated with the contact person.
    • Contact Address - Address of the contact person and organization.
    • Contact Voice Telephone - The telephone number of the contact persons and organizations.

    The metadata attributes may be submitted as a text file on the diskette containing the map and supporting data. If you have any additional questions please visit https://www.nj.gov/dep/srp/guidance/techgis/techgis04.htm and https://www.nj.gov/dep/gis/standard.htm or contact Nick Sodano at Nick.Sodano@dep.nj.gov. Note that the text file associated with the diskette is more comprehensive than the list included above. Only those points identified here need be completed.

Note:

This 1997 edition does not reflect updates for the various documents referenced in it. If a referenced document has been updated, its current version is to be used rather than the older edition.

Some sections with contact information have been modified to reflect organizational and personnel changes in the Department.

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