Abstract: Digital orthophotography of New Jersey, distributed as a Web Map Service (WMS). The service displays 3 band false color infrared (near IR) imagery acquired under leaf-off conditions. The native data set spatial reference system is State Plane Coordinate System NAD83 Coordinates, U.S. Survey Feet. In most client software, the default spatial reference system of the service will be Geographic Coordinates, WGS84. Several other coordinate systems are supported (see Supplemental Information; and Distribution Information section).Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) product of the US Geological Survey is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum of 1983 (NAD83). The data set for this service was derived from this product.Most of the imagery in this data set was captured in spring of 1995. Some of the state required reflight in 1997.This data set began as the DOQ product described above. Quarter quad images were then reprojected to NJ State Plane coordinates (NAD83), and converted to MrSID compressed format. The MrSID images were indexed and are served as a seamless Web Map Service (WMS).
Purpose: This service was created to provide convenient internet access to 1995 - 1997 orthophotos. It can be used by anyone with internet access and client software that can consume Open Geospatial Consortium compliant Web Map Services (WMS).DOQ's serve a variety of purposes, from interim maps to field references for earth science investigations and analysis. The DOQ is useful as a layer of a geographic information system and as a tool for revision of digital line graphs and topographic maps.
Supplemental Information: See Distribution Information, Ordering Instructions, for important details on how to use the service in ArcMap and ArcCatalog (ESRI desktop mapping products).In addition to the default spatial reference, this service supports requests for data delivered natively in the following coordinate reference systems:EPSG::3424 NAD83 NJ state plane feetEPSG::2959 UTM zone 18NEPSG::4269 Geographic NAD83EPSG::4326 Geographic WGS84EPSG::102711 NAD83 NJ state plane feet, ESRIThe raw image files received from the USGS for this project were uncompressed binary files, in UTM meters, NAD83. These images were projected from UTM meters to NJSPC feet, NAD83, to be compatible with all other data layers in the NJDEP's GIS, and image compression was applied. Further details about the source data can be obtained from the metadata record on NJGIN Explorer for "USGS 1995 - 1997 Digital Orthophoto Quadrangles for New Jersey (NJSPC, NAD83; MrSID format)". Information about county and individual DOQ records can be obtained from the EROS Data Center. Information from:URL:http://ask.usgs.gov Maintainer: edcnsdi@edcwww.cr.usgs.gov.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 19950101
Ending Date: 19970101
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -75.55
East Bounding Coordinate: -73.89
North Bounding Coordinate: 41.36
South Bounding Coordinate: 38.93
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: imageryBaseMapsEarthCover
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: DOQQ
Theme Keyword: digital orthophoto
Theme Keyword: orthophoto
Theme Keyword: 2-meter orhtophoto
Theme Keyword: DOQ
Theme Keyword: digital image map
Theme Keyword: quarter-quadrangle orthophoto
Theme Keyword: 1-meter orthophoto
Theme Keyword: rectified photograph
Theme Keyword: rectified image
Theme Keyword: 7.5- x 7.5-minute orthophoto
Theme Keyword: digital orthophotoquad
Theme Keyword: aerial photograph
Theme Keyword: 3.75- x 3.75-minute orthophoto
Place:
Place Keyword Thesaurus: U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standard 10-3):Washington, D.C., National Institute of Standards and Technology.
Place Keyword: 34
Place Keyword: US
Place:
Place Keyword Thesaurus: None
Place Keyword: Monmouth County
Place Keyword: statewide
Place Keyword: Cumberland County
Place Keyword: Hunterdon County
Place Keyword: East Coast
Place Keyword: Camden County
Place Keyword: Burlington County
Place Keyword: Passaic County
Place Keyword: Cape Map County
Place Keyword: Sussex County
Place Keyword: Ocean County
Place Keyword: Salem County
Place Keyword: Bergen County
Place Keyword: Hudson County
Place Keyword: Union County
Place Keyword: Atlantic County
Place Keyword: Middlesex County
Place Keyword: Essex County
Place Keyword: Mercer County
Place Keyword: Morris County
Place Keyword: Gloucester County
Place Keyword: Somerset County
Place Keyword: Mid Atlantic
Place Keyword: New Jersey
Place Keyword: NJ
Place Keyword: Warren County
Access Constraints: None
Use Constraints: See Distribution Information for details about use in ESRI desktop software. Acknowledgement of the NJ Office of Information Technology, U.S. Geological Survey, and NJDEP would be appreciated in products derived from these data.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NJ Office of Information Technology (NJOIT), Office of Geographic Information Systems (OGIS)
Security Information:
Security Classification System: ArcGIS
Security Classification: Unclassified
Security Handling Description: No special handling required
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: See metadata for the 1995 - 1997 orthophotography for details. Please note that the WMS resamples the data, so the image received is not identical to the MrSID tile data.
Quantitative Attribute Accuracy Assessment:
Attribute Accuracy Explanation: See metadata for the 1995 - 1997 orthophotography for details. Please note that the WMS resamples the data, so the image received is not identical to the MrSID tile data.
Logical Consistency Report: See Positional Accuracy Report.
Completeness Report: The service provides data for the entire area within the land borders of New Jersey, plus a variable buffer around the state boundary. It includes all imagery areas delivered as part of the 1995 - 1997 project.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: USGS statement for the DOQ program: The DOQ horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. These inputs consist of the digital elevation model (DEM),aerotriangulation control and methods, the photo source camera calibration, scanner calibration, and aerial photographs that meet National Aerial Photography Program (NAPP) standards. The vertical accuracy of the verified USGS format DEM is equivalent to or better than a USGS level 1 or 2 DEM, with a root mean square error (RMSE) of no greater than 7.0 meters. Field control is acquired by third order class 1 or better survey methods sufficiently spaced to meet National Map Accuracy Standards (NMAS) for 1:12,000-scale products. Aerial cameras have current certification from the USGS, National Mapping Division, Optical Science Laboratory. Test calibration scans are performed on all source photography scanners.Production of the MrSID version of the imagery slightly alters the apparent positions of features. Although no post-production testing was performed of the NJ State Plane MrSID version of the imagery, user experience suggests that the imagery generally meets Nation Map Accuracy Standards for 1:12000 scale maps. Resampling during production of the WMS image also slightly alters apparent positions of features.
Horizontal Positional Accuracy Explanation: USGS statement for the DOQ program: The DOQ horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. These inputs consist of the digital elevation model (DEM),aerotriangulation control and methods, the photo source camera calibration, scanner calibration, and aerial photographs that meet National Aerial Photography Program (NAPP) standards. The vertical accuracy of the verified USGS format DEM is equivalent to or better than a USGS level 1 or 2 DEM, with a root mean square error (RMSE) of no greater than 7.0 meters. Field control is acquired by third order class 1 or better survey methods sufficiently spaced to meet National Map Accuracy Standards (NMAS) for 1:12,000-scale products. Aerial cameras have current certification from the USGS, National Mapping Division, Optical Science Laboratory. Test calibration scans are performed on all source photography scanners.Production of the MrSID version of the imagery slightly alters the apparent positions of features. Although no post-production testing was performed of the NJ State Plane MrSID version of the imagery, user experience suggests that the imagery generally meets Nation Map Accuracy Standards for 1:12000 scale maps. Resampling during production of the WMS image also slightly alters apparent positions of features.
Lineage:
Source Information:
Source Citation:
Citation Information:
Publication Date: 19990101
Title: USGS 1995 - 1997 Digital Orthophoto Quadrangles for New Jersey (NJSPC, NAD83; MrSID format)
Source Scale Denominator: 12000
Type of Source Media: onLine
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 19950101
Source Currentness Reference: ground condition
Source Citation Abbreviation: USGS 1995 - 1997 Digital Orthophoto Quadrangles for New Jersey (NJSPC, NAD83; MrSID format)
Source Contribution: DOQQ tiled orthoimages of NJ
Process Step:
Process Description:
Web Map Service was built for the MrSID tiles of 1995 - 1997 orthophotography, using Express Server.
Process Date: 20090501
Process Step:
Process Description:
Service URL changed October 2009
Process Date: 20091007
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NJ Office of Information Technology (NJOIT), Office of Geographic Information Systems (OGIS)
Contact Instructions: Electronic mail preferred.Please use this contact only for questions specifically about the Web Map Service.
Resource Description: Direct downlaod of zipped file geodatabase.
Distribution Liability: The State of New Jersey provides the data set "as is". The State makes no guarantee or warranty concerning the accuracy of information contained in the data. Also, the State makes no warranty, either expressed or implied, regarding the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data files have been processed successfully on computers at the State, no warranty is made by the State regarding the use of the data on any other system, nor does the fact of distribution constitute or imply such a warranty.
Access Instructions: Direct downlaod of zipped file geodatabase.
Fees: none
Ordering Instructions: This OGC-compliant WMS is compatible with a broad range of client software (See http://www.thecarbonproject.com/gaia.php for one example of a free client). Use part or all of the network resource address to connect to the service. There are multiple sub-layers in the WMS; turn all of them off except "Infrared 1995". ArcGIS-Specific Instructions:One-Time Setup (for each user profile) -Launch ArcCatalog -Highlight "GIS Servers" in the catalog tree and double-click "Add WMS Server". -In the URL field, type http://njwebmap.state.nj.us/njimagery -Click the "Get Layers" button to confirm you have the correct URL. -After the layer information appears, click the OK button. -"New Jersey on njwebmap.state.nj.us" will appear in the list of GIS servers.Using the service -In ArcGIS 9.3: In ArcCatalog, double-click the "New Jersey" service entry that appears within the entry for the GIS server. Double-click the "Imagery" entry. Drag the sub-layer you wish to use into your ArcMap window. -In ArcGIS 9.2 or earlier: You cannot see the sub layers in ArcCatalog. Drag the "New Jersey" service name into ArcMap. Expand the "New Jersey" service name in ArcMap's table of contents. You should see several sub-layers. For faster performance and less load on our server, turn all of them off except for "Infrared 1995". -In all versions: If you already have other layers in the map, the web map service will be projected to match them. If not, it will default to longitude/latitude, and you should change the projection. Right-click on the layer name and choose "change coordinate system". NJ State Plane is recommended. -You may get a warning message about the coordinate transformation; dismiss it. The errors described in that warning will not actually occur if you are using NJ State Plane coordinates. That coordinate system is supported directly in the web map service, so ArcMap does not wind up doing the coordinate transformation. -Note: ArcGIS 9.3 allows you to preview the map service in ArcCatalog; earlier versions do not.
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date: 20090501
Metadata Reference Information:
Metadata Date: 20091015
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NJ Office of Information Technology, Office of GIS
Contact Instructions: For further information about the imagery, see internet address for the Eros Data center. Questions relating to post-processing to NJ State Plane coordinates can be addressed to NJ Dept. of Environmental Protection, BGIS. Questions about the Web Map Service can be addressed to the NJ Office of Information Technology, Office of GIS.
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Security Information:
Metadata Security Classification System: ArcGIS
Metadata Security Classification: Unclassified
Metadata Security Handling Description: No special handling required.