![]() Product Standards for DLG and Quadrangle Maps, published as the For information onĬollection/inclusion criteria, see USGS National Mapping Division Have been eliminated or generalized on the source graphic, due to ![]() Graphic files reflect content of the source graphic. The intent is to recreate thoseĬolors as near as possible. Some differences may be detectedīetween the source graphic used and the DRG due to the RGB valuesĪssigned that particular color. The Digital Raster Graphic (DRG) is a faithfully reproduced digital Logical_Consistency_Report: Not Applicable Completeness_Report: Also, the quality of the user's output device Source map, a user will usually notice small differencesīetween the colors on the digital image and on the paper Values of the DRG may sometimes match those of the paper The values for a particular color, therefore, will remainĬonsistent throughout that DRG series. To ensure uniform colors throughout a particular DRG series. The DRG is an 8-bit color image which employs a color palette 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: 60 Contact_Facsimile_Telephone: 60 Contact_Electronic_Mail_Address: Hours_of_Service: 8:30AM-5PM, EST Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: gif image file Browse_Graphic_File_Type: gif Data_Set_Credit: GRANIT database Native_Data_Set_Environment:ĭata_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1968 Currentness_Reference: Ground Condition Status: Progress: In work Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.500 East_Bounding_Coordinate: -71.375 North_Bounding_Coordinate: 42.875 South_Bounding_Coordinate: 42.750 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: DRG Theme_Keyword: Digital Raster Graphic Theme_Keyword: Topographic Map Theme_Keyword: Contour Line Theme_Keyword: Digital Contours Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Northeast Place_Keyword: New England Place_Keyword: New Hampshire Place_Keyword: NASHUA NORTH, NH Access_Constraints:Īcknowledgement of GRANIT and the US Geological Survey wouldīe appreciated in products derived from these data. Supplemental_Information: Data distribution tile: 7.5-minute quadrangle. digital elevation models orĭigital orhophotoquads) to produce a hybrid digital file. Quality assurance on other digital products. They are commonly used as background layers, and as a means to perform Mey be readily used as a layer in a geographic information system. ![]() When the DRG is combined with otherĭigital products, such as DOQ or DEM, the resulting image providesĪdditional visual information for the extraction and revision of baseīecause the DRG's are georeferenced to the surface of the Earth, they The DRG can be used to collect, review, and revise otherĭigital data, such as DLG data. The image inside the map neatline is georeferenced to the surface of (For those interested in the complete map as printed, Images distributed through GRANIT include only the map body, andĮxclude any of the map collar information printed on the paper Identification_Information: Citation: Citation_Information: Originator: Complex Systems Research Center, University of New Hampshire Publication_Date: 19980201 Title: Digital Raster Graphic - Quad 197 - NASHUA NORTH, NH Edition: One 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: 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: Description: Abstract:Ī DRG is a scanned image of a USGS topographic map. Digital Raster Graphic - Quad 197 - NASHUA NORTH, NH Digital Raster Graphic - Quad 197 - NASHUA NORTH, NH
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