GIS Metadata

Frequently Asked 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 are geographic features stored in the data set?
8. What coordinate system is used to represent geographic features?
9. 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?


New Jersey Department of Transportation Geographic Information Systems, 2009, NJDOT Major Roadways 2009: New Jersey Department of Transportation GIS, Trenton, NJ.

Online Link

Other Citation Details:

In the "State Maps" section, click on the Highway System zip file link.



2. What geographic area does the data set cover?


West_Bounding_Coordinate: -75.577191
East_Bounding_Coordinate: -73.908465
North_Bounding_Coordinate: 41.356036
South_Bounding_Coordinate: 38.926208



3. What does it look like?




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


Calendar_Date: 2009
Time_of_Day: unknown
Currentness_Reference: ground condition



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?




7. How are geographic features stored in the data set?


   This is a Vector data set. It contains the following vector
   data types (SDTS terminology):

         - String (5010)



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


   Grid_Coordinate_System_Name: State Plane Coordinate System
   State_Plane_Coordinate_System:
         SPCS_Zone_Identifier: 2900
         Transverse_Mercator:
               Scale_Factor_at_Central_Meridian: 0.999900
               Longitude_of_Central_Meridian: -74.500000
               Latitude_of_Projection_Origin: 38.833333
               False_Easting: 492125.000000
               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 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_Datum_Name: North American Vertical
                                               Datum of 1988
               Altitude_Resolution: 1.000000
               Altitude_Distance_Units: feet
               Altitude_Encoding_Method: Implicit coordinate



9. How does the data set describe geographic features?


roads_2008
         New Jersey roads (Source: New Jersey Department of
         Transportation)

Shape
         Feature geometry. (Source: ESRI)

         Coordinates defining the features.

OBJECTID
         Internal feature number (Source: ESRI)

SRI
         Standard Route Identifier (Source: NJDOT)

SLD_NAME
         Street Name (Source: NJDOT)

MP_START
         Begin Milepost (Source: NJDOT)

MP_END
         End Milepost (Source: NJDOT)

Route_SUBTYPE
         Road Classification (Source: NJDOT)



Value	Definition
7	Local Road
2	US Highway
3	State Highway
5	County 500 Series Route
1	Interstate Highway
4	Toll Road
6	County 600 Series Route


RTE_LABEL
         Route labeling field (Source: NJDOT)

SHAPE_LEN
         Internal feature description (Source: ESRI)

Who produced the data set?

1. Who are the originators of the data set?

(may include formal authors, digital compilers, and editors)

New Jersey Department of Transportation Geographic
Information Systems



2. Who also contributed to the data set?




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


New Jersey Department of Transportation
c/o Mark Gulbinsky
GIS Specialist
1035 Parkway Avenue
Trenton, NJ 08625
USA

609-530-3097 (voice)
609-530-4508 (FAX)
mark.gulbinsky@dot.state.nj.us
Hours_of_Service: 8:30AM-5:00PM

Why was the data set created?

How was the data set created?

1. From what previous works were the data drawn?


(source 1 of 1)
        Type_of_Source_Media: USGS Quadrangles
        Source_Scale_Denominator: 24000



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


(process 1 of 2)
        Dataset copied.

        Person who carried out this activity:

            New Jersey Department of Transportation
            1035 Parkway Avenue
            Trenton, NJ 08625
            USA

            609-530-2415 (voice)

        Data sources used in this process:             Server=conover43.oit.state.nj.us; Service=5152; User=;
            Version=SDE.DEFAULT

(process 2 of 2)
        Dataset copied.

        Data sources used in this process:
            N:\gisdev01\shapefiles\roads_2003



3. What similar or related data should the user be aware of?


        New Jersey Department of Transportation, 2009, NJDOT
        roadways: New Jersey Department of Transportation GIS,
        Trenton, NJ.

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?


Fitted to orthophotography 1995 to 2007



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?

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


        Access_Constraints:None.
        Use_Constraints:
            For all data contained herein, NJDOT makes no
            representations of any kind, including but not limited to
            the warranties of merchantability or fitness for a
            particular use, nor are any such warranties to be implied,
            with respect to the digital data layers furnished
            hereunder. NJDOT assumes no responsibility to maintain
            them in any manner or form.



2. Who distributes the data set?


(Distributor 1 of 1)
        New Jersey Department of Transportation
        1035 Parkway Avenue
        Trenton, NJ 08620
        USA

        609-530-2415 (voice)
        Hours_of_Service: 8:30 AM-5:00 PM



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


Downloadable Data



4. What legal disclaimers am I supposed to read?




5. How can I download or order the data?


        Availability in digital form:

            Data format: ARCG (version 8.3) shapefile Size: 4.829             Media you can order: CD-ROM

        Cost to order the data: none

        How long will it take to get the data?

            24 hours

Who wrote the metadata?