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Hypsography - Quad 128 - MILTON, NH-ME

Hypsography - Quad 128 - MILTON, NH-ME

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Complex Systems Research Center, University of New Hampshire
Publication_Date: 200805
Title: Hypsography - Quad 128 - MILTON, NH-ME
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Durham, New Hampshire
Publisher: Complex Systems Research Center, University of New Hampshire
Other_Citation_Details: None
Online_Linkage: <URL:http://www.granit.unh.edu/data/search?dset=hypso/hypso128>
Larger_Work_Citation:
Citation_Information:
Originator: Complex Systems Research Center, University of New Hampshire
Publication_Date: 19860101
Title: NH GRANIT Database
Publication_Information:
Publication_Place: Durham, New Hampshire
Publisher: Complex Systems Research Center, University of New Hampshire
Online_Linkage: <URL:http://www.granit.unh.edu>
Description:
Abstract:
The USGS Hypsography files contain digital representations of the topographic contours mapped on the USGS quadrangles. This USGS DLG (Digital Line Graph) data layer contains a full range of attribute codes, has full topological structuring, and has passed certain quality control checks. More information regarding USGS DLG data can be found at <http://edc.usgs.gov/guides/dlg.html>.
Purpose:
These data may be used to construct municipal, regional, or statewide base maps.
Supplemental_Information: Data distribution tile: 7.5-minute quadrangle.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200710
Currentness_Reference: Last data update
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.000
East_Bounding_Coordinate: -70.875
North_Bounding_Coordinate: 43.500
South_Bounding_Coordinate: 43.375
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Hypsography
Theme_Keyword: Contours
Theme_Keyword: Elevation
Theme_Keyword: Topography
Theme_Keyword: Digital Line Graphs
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place_Keyword: Northeast
Place_Keyword: New England
Place_Keyword: New Hampshire
Place_Keyword: MILTON, NH-ME
Access_Constraints: None.
Use_Constraints: Not for legal use.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Complex Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1792
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 8:30AM-5PM, EST
Browse_Graphic:
Browse_Graphic_File_Name:
<URL:http://www.granit.unh.edu/data/sampleimage.pm?file=/d-webdata/hypso/browse.gif>
Browse_Graphic_File_Description: gif image file
Browse_Graphic_File_Type: gif
Data_Set_Credit: GRANIT database
Native_Data_Set_Environment:
ESRI ArcGIS 9.x.


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The attribute accuracy is estimated to be 98.5 percent. Attribute accuracy was tested by one or more of the following methods: - manual comparison of the source with hard copy plots. - symbolized display of the digital line graph on an interactive computer graphic system. - Selected attributes that could not be visually verified on plots or on screen, were interactively queried and verified on screen. In addition, U.S. Geological Survey (USGS) Production System (PROSYS) software tested the attributes against a master set of valid attributes for the category; it also checked for selected valid attribute combinations, and for valid attributes relative to topology and dimensionality. All attribute data conform to the attribute codes current as of the date of digitizing.
Logical_Consistency_Report:
Topological requirements include: lines must begin and end at nodes, lines must connect to each other at nodes, lines do not extend through nodes, left and right areas are defined for each line element and are consistent throughout the file, and the lines representing the limits of the file (neatline) are free of gaps. The tests of logical consistency were performed by the USGS PROSYS program. The neatline was generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data outside the enclosed region were ignored and all data crossing these geographically straight lines were clipped at the neatline. Data within a specified tolerance of the neatline were snapped to the neatline. Neatline straightening aligned the digitized edges of the digital data with the generated neatline, that is, with the longitude/latitude lines in geographic coordinates. All internal areas were tested for closure using PROSYS.
Completeness_Report:
Data completeness reflects the content of the source quadrangle. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. For Digital Revision Status = Not revised Reported data completeness reflects the content of the source quadrangle. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. For Digital Revision Status = Limited Update This file has undergone limited update digital revision. The file contains only (1) those features that are photoidentifiable on monoscopic source, supplemented with limited ancillary source, and (2) those features, present on the original source quadrangle, that can not be reliably photoidentified but that are not considered particularly prone to change. For Digital Revision Status = Standard Update This file has undergone standard update digital revision. The data completeness of this file meets NMD standards for feature content.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
For Digital Revision Status = Not revised The Horizontal positional accuracy is based upon the use of USGS source quadrangles which are compiled to meet National Map Accuracy Standards (NMAS). NMAS horizontal accuracy requires that at least 90 percent of points tested are within 0.02 inches of the true position. The digital data are estimated to contain a horizontal positional error of less than or equal to 0.003 inches standard error in the two component directions relative to the source quadrangle. Comparison to the graphic source is used as control to assess digital positional accuracy. Cartographic offsets may be present on the graphic source, due to scale and legibility constraints. Digital map elements require edge alignment between data sets. Data along each quadrangle edge are tested against the data set for the adjacent quadrangle using PROSYS; tests check for positional accuracy between data sets within a 0.02 inches tolerance. Features with like dimensionality, and with or without like attribution, that are within the tolerance are adjusted by moving the feature equally in both data sets. Features outside the tolerance are not moved. All disconnects are identified by edge matching flags that document the mismatch. For Digital Revision Status = Limited Update: This file has undergone limited update digital revision. Accuracy of these digital data meets the class 1 positional accuracy specifications in the draft United States National Cartographic Standards for Spatial Accuracy. Digital map elements require edge alignment between data sets. Data along each quadrangle edge are tested against the data set for the adjacent quadrangle using PROSYS; tests check for positional accuracy between data sets within a 0.02 inches tolerance. Features with like dimensionality, and with or without like attribution, that are within the tolerance are adjusted by moving the feature equally in both data sets. Features outside the tolerance are not moved. All disconnects are identified by edge matching flags that document the mismatch. For Digital Revision Status = Standard Update: This file has undergone standard update digital revision. Accuracy of these digital data meets at least the class 2 positional accuracy specification in the draft United States National Cartographic Standards for Spatial Accuracy. Digital map elements require edge alignment between data sets. Data along each quadrangle edge are tested against the data set for the adjacent quadrangle using PROSYS; tests check for positional accuracy between data sets within a 0.02 inches tolerance. Features with like dimensionality, and with or without like attribution, that are within the tolerance are adjusted by moving the feature equally in both data sets. Features outside the tolerance are not moved. All disconnects are identified by edge matching flags that document the mismatch.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
For Hypsography, Hydrography and Survey Control and Markers Only: Vertical positional accuracy is based upon the use of USGS source quadrangles which are compiled to meet NMAS. NMAS vertical accuracy requires that at least 90 percent of well defined points tested be within one half contour interval of the correct value. Comparison to the graphic source is used as control to assess digital positional accuracy. For Hypsography, Hydrography and Survey Control and Markers Only: For Digital Revision Status = Limited Update or Standard Update: This file has undergone digital revision. Accuracy of these digital data meets the class 1 positional accuracy specifications in the draft United States National Cartographic Standards for Spatial Accuracy.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
US Geological Survey or another mapping agency in cooperation with USGS
Publication_Date: Unknown
Title: Digital Line Graphs - 24K
Edition: 1
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Reston, VA
Publisher: US Geological Survey
Other_Citation_Details: None
Online_Linkage: <http://edcsns17.cr.usgs.gov/EarthExplorer/>
Larger_Work_Citation:
Citation_Information:
Originator: US Geological Survey
Publication_Date: Unknown
Title: National Cartographic Database
Publication_Information:
Publication_Place: Reston, VA
Publisher: US Geological Survey
Online_Linkage: <URL:http://www.usgs.gov>
Source_Scale_Denominator: 24000
Type_of_Source_Media: Digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: Unknown
Ending_Date: Unknown
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: DLG-3
Source_Contribution:
The DLG files provided the basic coordinate information for the data layer, as well as the fundamental feature codes.
Process_Step:
Process_Description:
The source DLG files were converted into Arc/Info coverages using the "DLGARC" command. Line topology was constructed and attributes were appended using basic Arc/Info utilities. The data were then projected from UTM meters (zone 18 or 19), NAD27 (or NAD83), to NH State Plane feet, NAD83. A new field, ELEV, was created and MAJOR/MINOR codes representing elevation values were migrated to ELEV, converting from meters to feet if necessary. Coverages were then converted to shapefile format using the "ARCSHAPE" command.
Source_Used_Citation_Abbreviation: DLG-3
Process_Date: 200805
Source_Produced_Citation_Abbreviation: Version 1
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: Complex Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1792
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 8:30AM-5PM, EST


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete Chain
Point_and_Vector_Object_Count: 1228


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: New Hampshire
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999967
Longitude_of_Central_Meridian: -71.666667
Latitude_of_Projection_Origin: 42.500000
False_Easting: 984249.999900
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 2.0013 (2.1325 for 25K)
Ordinate_Resolution: 2.0013 (2.1325 for 25K)
Planar_Distance_Units: Feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS 80
Semi-major_Axis: 20925604.4720406
Denominator_of_Flattening_Ratio: 298.26


Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
DLG3 attribute codes are used to describe the physical and cultural characteristics of DLG node, line, and area elements. Attribute codes are used to reduce redundant information, provide enough reference information to support integration with larger data base, and describe the relationships between cartographic elements. Each DLG element has one or more attribute codes composed of a three digit major code and a four-digit minor code. For more information regarding DLG MAJOR/MINOR attribute codes, please see Part 3 of the Standards for Digital Line Graphs document (<http://rmmcweb.cr.usgs.gov/nmpstds/acrodocs/dlg-3/3dlg0798.pdf>).
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Detailed_Description:
Entity_Type:
Entity_Type_Label: hypso128
Entity_Type_Definition: Elevation contours
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: ELEV
Attribute_Definition: Elevation in feet.
Attribute_Definition_Source: Complex Systems Research Center
Attribute_Domain_Values:
Unrepresentable_Domain: Calculated value.


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Complex Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1792
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 8:30AM-5PM, EST
Resource_Description: Downloadable Data
Distribution_Liability:
Digital data in NH GRANIT represent the efforts of the contributing agencies to record information from the cited source materials. Complex Systems Research Center, under contract to the NH Office of Energy and Planning, and in consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these data. OEP, CSRC, and the cooperating agencies make no claim as to the validity or reliability or to any implied uses of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI shapefile
Transfer_Size: 1.4 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <URL:http://www.granit.unh.edu>
Fees:
No charge when downloaded from the internet. Cost of reproduction for provision on CD/ROM or other media.
Ordering_Instructions:
Email GRANIT (granit@unh.edu) or order/download from web site (www.granit.unh.edu). Delivery Time: Two weeks
Technical_Prerequisites:
Ability to read/import shapefiles.


Metadata_Reference_Information:
Metadata_Date: 200805
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Complex Systems Research Center
Contact_Person: GRANIT Database Manager
Contact_Position: GRANIT Database Manager
Contact_Address:
Address_Type: Mailing and physical address
Address: Morse Hall, University of New Hampshire
City: Durham
State_or_Province: NH
Postal_Code: 03824
Country: US
Contact_Voice_Telephone: 603-862-1792
Contact_Facsimile_Telephone: 603-862-0188
Contact_Electronic_Mail_Address: granit@unh.edu
Hours_of_Service: 8:30AM-5PM, EST
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.8.13 on Fri Jun 6 12:17:27 2008
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