Digital Raster Graphic Mosaic of Adams County, Colorado

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service
Publication_Date: 20020424
Title: Digital Raster Graphic Mosaic of Adams County, Colorado
Geospatial_Data_Presentation_Form: remote-sensing image
Description:
Abstract:
The Digital Raster Graphic (DRG) is a scanned image of a US Geological Survey (USGS) standard series topographic map that includes all collar information (e.g., legend, scale bar, index map, etc.) The DRGE is a non-proprietary product of a USGS DRG in which the map collar information has been removed.
Purpose:
The DRGE is useful as a source or background layer in a GIS, as a means to perform quality assurance on other digital products, and as a source for the collection and revision of DLG data. The DRGE can also be merged with other digital data, e.g. DEM's or DOQ's, to produce a hybrid digital file. The removal of the collar information allows the DRGE to be edge-matched and displayed simultaneously in a Geographic Information System.

These data are prepared for use by the Natural Resources Conservation Service for USDA Service Center personnel to administer agency programs.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: unknown
Ending_Date: unknown
Currentness_Reference: Source Map
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.126484
East_Bounding_Coordinate: -103.615500
North_Bounding_Coordinate: 40.133143
South_Bounding_Coordinate: 39.616870
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Digital Raster Graph
Theme_Keyword: Digital Raster Graph Enhanced
Theme_Keyword: DRG
Theme_Keyword: DRGE
Theme_Keyword: Topographic Map
Place:
Place_Keyword_Thesaurus:
Counties and County Equivalents of the States of the United States and the District of Columbia (FIPS Pub 6-3)
Place_Keyword: Adams County
Place_Keyword: Colorado
Place_Keyword: United States
Access_Constraints: None.
Use_Constraints:
These data were prepared for Official Use Only by USDA employees as part of the Service Center Initiative.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Geospatial Data Branch
Contact_Organization:
U.S. Department of Agriculture, Natural Resources Conservation Service
Contact_Address:
Address_Type: mailing and physical address
Address: Federal Center, 501 W. Felix St., Bldg 23, P.O Box 6567
City: Fort Worth
State_or_Province: Texas
Postal_Code: 76115
Country: USA
Contact_Voice_Telephone: (817) 509-3400
Contact_Facsimile_Telephone: (817) 509-3469
Hours_of_Service: 8:00 am to 4:30 pm, Central
Browse_Graphic:
Browse_Graphic_File_Name: unavailable
Browse_Graphic_File_Description: unavailable
Browse_Graphic_File_Type: unavailable
Data_Set_Credit:
The original DRG was produced through an Innovative partnership agreement between The Land Information Technology Company, Ltd., of Aurora, CO and the USGS.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.2.671

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
In the source data, the DRGE is an 8-bit color image that employs a color palette to ensure uniform colors throughout a particular DRG series. All DRG's within a series have the same RGB value.
Logical_Consistency_Report: Not Applicable
Completeness_Report:
According to the USGS, the DRG is a faithfully reproduced digital image of the original source map. Some differences may be detected between the source graphic used and the DRG due to the RGB values assigned that particular color. The intent is to recreate those colors as near as possible. Data completeness for DRG files reflect content of the source graphic. Features may have been eliminated or generalized on the source graphic due to scale and legibility constraints.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The datum of the published map is retained to be consistent with other USGS digital data.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: NA
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Beartooth Mapping, Inc.
Publication_Date: 2000
Publication_Time: Unknown
Title: DRGE
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Source_Scale_Denominator: 24,000
Type_of_Source_Media: CD-ROM
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: DRGE
Source_Contribution:
The DRG source map imagery was processed using the Spatial Analyst Extension to ArcView 3.1 (ESRI, Inc). The map collar was removed and portions of adjacent quadrangles were appended to the input image to produce a UTM rectangle output. DRGE images from the same map series (large, intermediate, and small scale) were processed by UTM zone to produce seamless output imagery within each Zone.

The output ArcView Grid was converted to a TIFF 6.0 / GeoTIFF 1.0 image using the GridIO API (ESRI, Inc.), LibTiff Library (Copyright 1988-1998 Sam Leffler, 1991-1998 Silicon Graphics, Inc) and LibGeoTiff Library.

Additional information about DRGE imagery can be obtained from:

Beartooth Mapping, Inc. PO Box 2075 Red Lodge, MT 59068 Telephone: (406) 446-1007 Email: info@beartoothmaps.com

Process_Step:
Process_Description:
Enhanced Digital Raster Graphs (DRGE) are used to create mosaics. All DRGE's for the area of interest, typically a county, are processed using geo-referencing information from the input images to create a consolidated MrSID image. The input images are in GeoTIFF format. The mosaic is compressed to a ratio of about 1:20 to save on storage requirements and to accelerate computer processing and display.

All DRGE's must be in the same UTM zone for MrSID Version 1.3 software to create a mosaic. In areas split by a UTM zone, DRGE's in the lesser zone are reprojected to the dominant UTM zone using ArcInfo, ERDAS Imagine or similar software

Source_Used_Citation_Abbreviation: DRGE
Process_Date: 20020416
Source_Produced_Citation_Abbreviation: MrSID

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 23129
Column_Count: 52798
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -105.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 2.438400
Ordinate_Resolution: 2.438400
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
In the source TIFF image (DRGE), each raster entity or pixel contains a color index from 0 through 12 referencing a color palette of RGB values from 0 through 255 in which the standard colors used in the DRGE are defined. The DRGE Color Palette (Digital Number, Color, Red, Green, Blue), 0 Black 0 0 0, 1 White 255 255 255, 2 Blue 0 151 164, 3 Red 203 0 23, 4 Brown 131 66 37, 5 Green 201 234 157, 6 Purple 137 51 128, 7 Yellow 255 234 0, 8 Light Blue 167 226 226, 9 Light Red 255 184 184, 10 Light Purple 218 179 214, 11 Light Grey 209 209 209, 12 Light Brown 207 164 142.

Essentially, the compressed mosaic contains three bands resulting in six colors when red, blue, and green are are used for image display. The colors represent the following: Contours - brown, Hydrography - blue, Public Land Survey System and other surveys - red, Updates - purple/magenta, Miscellaneous - black, and Vegetation - green.

Entity_and_Attribute_Detail_Citation:
U.S. Department of the Interior, U.S. Geological Survey, 1997, Standards for Digital Raster Graphs: Reston, VA.

Softcopy in Adobe Acrobat Portable Document File (PDF) format: <http://rmmcweb.cr.usgs.gov/public/nmpstds/drgstds.html>


Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Geospatial Data Branch
Contact_Organization:
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Contact_Address:
Address_Type: mailing and physical address
Address: Federal Center, 501 W. Felix St., Bldg. 23, P.O. Box 6567
City: Fort Worth
State_or_Province: Texas
Postal_Code: 76115
Country: USA
Contact_Voice_Telephone: (817) 509-3400
Contact_Facsimile_Telephone: (817) 509-3469
Hours_of_Service: 8:00 am to 4:30 pm, Central
Resource_Description: Digital Raster Graph Mosaic
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Agency regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The U.S. Department of Agriculture prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status. (Not all prohibited bases apply to all programs.)

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: MrSID
File_Decompression_Technique: No compression applied
Transfer_Size: 128.393
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://lighthouse.nrcs.usda.gov/gateway/gatewayhome.html>.
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 650
Recording_Density_Units: MB
Recording_Format: ISO 9660, Level 2, Mode 1
Fees: $50 per CD-ROM
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: unknown
Ending_Date: unknown

Metadata_Reference_Information:
Metadata_Date: 20020423
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Contact_Person: Geospatial Data Branch
Contact_Address:
Address_Type: mailing and physical address
Address: Federal Center, 501 W. Felix St., Bldg. 23, P.O. Box 6567
City: Fort Worth
State_or_Province: Texas
Postal_Code: 76115
Country: USA
Contact_Voice_Telephone: (817) 509-3400
Contact_Facsimile_Telephone: (817) 509-3469
Hours_of_Service: 8:00 am to 4:30 pm, Central
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.7.3 on Wed Apr 24 08:27:31 2002